CCNA 1 Ver. 3.1 >>>>>>>>>>>> Modulo 2 Voto 89,7 >>>>>>>>>>>> 1 What makes it easier for different networking vendors to design software and hardware that will interoperate? *OSI model proprietary designs IP addressing scheme standard logical topologies standard physical topologies 2 Refer to the exhibit. Identify the devices labeled A, B, C, and D in the network physical documentation. A=bridge, B=switch, C=router, D=hub *A=bridge, B=hub, C=router, D=switch A=bridge, B=router, C=hub, D=switch A=hub, B=bridge, C=router, D=switch 3 Refer to the exhibit. Which column shows the correct sequence of OSI model layers? A B C *D 4 Which two features apply to WAN connections? (Choose two.) *operate using serial interfaces make network connection using a hub limited to operation over small geographic areas typically operate under local administrative control *provide lower bandwidth services compared to LANs 5 Which layer of the OSI model provides network services to processes in electronic mail and file transfer programs? data link transport network *application 6 Which of the following are ways that bandwidth is commonly measured? (Choose three.) GHzps *kbps *Mbps Nbps MHzps *Gbps 7 Which of the following are factors that determine throughput? (Choose two.) types of passwords used on servers type of Layer 3 protocol used *network topology width of the network cable *number of users on the network 8 Which term describes the process of adding headers to data as it moves down OSI layers? division encoding separation segmentation *encapsulation 9 Which best describes the function of the physical layer? *Defines the electrical and functional specifications for the link between end systems. Provides reliable transit of data across a physical link. Provides connectivity and path selection between two end systems. Concerned with physical addressing, network topology and media access. 10 Refer to the following list. Choose the correct order of data encapsulation when a device sends information. segments bits packets data frames 1 - 3 - 5 - 4 - 2 2 - 1 - 3 - 5 - 4 2 - 4 - 3 - 5 - 1 4 - 3 - 1 - 2 - 5 * 4 - 1 - 3 - 5 - 2 3 - 5 - 1 - 2 - 4 11 The central hub has malfunctioned in the network. As a result, the entire network is down. Which type of physical network topology is implemented? bus *star ring mesh 12 What is the term used to describe the transport layer protocol data unit? bits packets *segments frames data streams 13 Which three features apply to LAN connections? (Choose three.) operate using serial interfaces *make network connection using a hub *limited to operation over small geographic areas provide part-time connectivity to remote services *typically operate under local administrative control provide lower bandwidth services compared to WANs 14 A switch has failed in the network. As a result, only one segment of the network is down. Which type of physical network topology is implemented? bus ring star *extended star 15 Which layer of the OSI model provides connectivity and path selection between two end systems where routing occurs? physical layer data link layer *network layer transport layer 16 What is one advantage of defining network communication by the seven layers of the OSI model? It increases the bandwidth of a network. *It makes networking easier to learn and understand. It eliminates many protocol restrictions. It increases the throughput of a network. It reduces the need for testing network connectivity. 17 Which of the following are layers of the TCP/IP model? (Choose three.) *Application Physical *Internet *Network Access Presentation 18 Which of the following are data link layer encapsulation details? (Choose two.) *A header and trailer are added. Data is converted into packets. *Packets are packaged into frames. Frames are divided into segments. Packets are changed into bits for Internet travel. >>>>>>>>>>>> Modulo 3 Voto 100 >>>>>>>>>>>> 1 What are two advantages of using UTP cable in a networking environment? (Choose two.) is stiffer than STP *is less expensive than fiber *is easier to install than coaxial provides longer distances than coaxial provides is less susceptible to outside noise sources than fiber is 2 What are two advantages of using fiber-optic cabling instead of UTP? (Choose two.) lower cost easer to install *allows longer distances *less effected by external signals easier to terminate the cable ends 3 What is the difference between a wireless NIC and an Ethernet NIC? The Ethernet NIC operates at 100 Mbps, whereas a wireless NIC operates at 10 Mbps. The Ethernet NIC uses a PCI expansion slot, and a wireless NIC cannot use an expansion slot. The wireless NIC uses CSMA/CA, whereas a Ethernet NIC uses token passing as an access method. *The wireless NIC associates to an access point, and an Ethernet NIC attaches to a hub or switch using a cable. The Ethernet NIC attaches to a hub or a switch using only fiber cabling, and a wireless NIC attaches to a wireless antenna using air as a network medium. 4 Refer to the exhibit. The JacksCo is a small start-up company that took over an office space from another small company that closed. The older company left a room of network equipment behind. An inventory list is shown. As the newly hired network technician, you have been asked to determine which components in the storeroom would be best to use to install a small wireless LAN that currently only needs the employees to be able to share data. Note that the wireless LAN also needs to connect to an existing wired LAN. Which components should you choose? access point and wireless NICs *wireless NICs, access point, straight-through cables, and a switch hub, wireless NICs, two wireless bridges, crossover cables, and an access point wireless NICs, Ethernet NICs, a switch, an external modem, two wireless bridges Ethernet NICs, wireless NICs, switch, hub, two wireless bridges, straight-through cables, crossover cables, and a router 5 A company is converting a cabled LAN to a wireless Ethernet LAN. What must be changed on every host on the network? No changes are required. Each host will require a new IP address. *Each host will require an appropriate NIC or adapter. Each host will require that the operating system be upgraded. 6 Refer to the exhibit. Which answer correctly identifies the pinout of the UTP cables labeled Cable A, Cable B, and Cable C? A=straight, B=rollover, C=crossover A=rollover, B=crossover, C=straight A=crossover, B=straight, C=straight *A=crossover, B=straight, C=rollover A=straight, B=crossover, C=rollover A=rollover, B=straight, C=crossover 7 What factors should be considered when selecting the appropriate cable for connecting a PC to a network? (Choose two.) type of system bus motherboard model *distance of cable run *speed of transmission computer manufacturer 8 Select the characteristics specified by 10BaseT. (Choose three.) *twisted pair cable T style connectors *baseband transmission 10 gigabits per second data rate *10 megabits per second data rate decimal encoded data transmission 9 When is a straight-through cable used in a network? when configuring a router when connecting a host to a host *when connecting a switch to a router when connecting one switch to another switch 10 What type of cable is used to make an Ethernet connection between a host and a LAN switch? console rollover crossover *straight-through 11 Which of the following are used for data communication signals? (Choose three.) *light patterns *electrical voltages controlled air pulses mixed media impulses magnetized fluid wave *modulated electromagnetic waves 12 What does UTP cable rely on to reduce signal degradation caused by EMI and RFI? shielding magnetism *cancellation insulation properly grounded connections RJ-45 connectors 13 Refer to the exhibit. What type of cable connects the two routers together without any intermediary device? console rollover *crossover straight-through 14 Which Ethernet implementation requires the signal on the media to be boosted at a maximum distance of 100 meters? 10BASE2 10BASE5 *100BASE-T 100BASE-FX 1000BASE-CX 15 Which cable connectors are used to connect a cable from a router's console port to a PC? (Choose two.) RJ-11 RJ-12 *RJ-45 DB-8 *DB-9 DB-10 >>>>>>>>>>>> Modulo 4 Voto 100 >>>>>>>>>>>> 1 A company needs to extend the LAN to six separate buildings. To limit the amount of signal attenuation on the LAN media, what type of media would be the best to use between the buildings? air (wireless) coaxial cable *fiber shielded twisted pair unshielded twisted pair 2 Which of the following are detected by the wire map test? (Choose three.) near-end crosstalk (NEXT) *opens propagation delay return loss *reversed-pair faults *short circuits 3 What is a cause of crosstalk in UTP cable? cable pairs that are shorted cable pairs crossed during termination cabling runs installed in separate conduit *cable pairs that are untwisted because of poor termination of the cable 4 A small company is experiencing difficulties on its LAN. After performing some tests, a technician has determined that the copper media supporting the LAN is experiencing abnormal attenuation. What are two possible causes of the problem? (Choose two.) *defective connectors *excessively long cable lengths use of higher grade cabling low frequency signals used in the media network cable runs isolated from other cables 5 How are binary ones and zeros represented in fiber optic installations? (Choose two.) +5 volts/-5 volts 0 volts/5 volts *light/no light high to low electrical transition low to high electrical transition *increasing/decreasing light intensity 6 What factors need to be considered to limit the amount of signal attenuation in Ethernet cable runs? (Choose two.) type of users number of users *length of cable type of electrical equipment *installation of connectors on the cable 7 To ensure reliable LAN communications, what should a technician be looking for when attaching connectors to the ends of UTP cable? that the white-orange/orange pair is attached first *that the wire pairs remain twisted as much as possible that one end of the shield is properly ground but not the other that 50 ohm termination resistors are on both ends 8 Which of the following describes frequency? length of each wave height of each wave *number of cycles each second amount of time between each wave 9 What conditions are described when transmission signals from one wire pair affects another wire pair? (Choose two.) *noise resistance mismatch jitter *crosstalk attenuation 10 What is expected when crosstalk is present in networks with higher transmission frequencies? (Choose two.) jitter *increase in crosstalk higher signal attenuation increases in cancellation effect *destruction of more of the data signal >>>>>>>>>>>> Modulo 5 Voto 100 >>>>>>>>>>>> 1 Refer to the exhibit. What is the appropriate cable to use at each of the numbered network connections? 1-crossover; 2-straight-through; 3-crossover; 4-straight-through 1-straight-through; 2-crossover; 3-straight-through; 4-straight-through 1-straight-through; 2-crossover; 3-crossover; 4-straight-through *1-rollover; 2-crossover; 3-straight-through; 4-straight-through 1-rollover; 2-straight-through; 3-straight-through; 4-straight-through 2 Which two devices are considered OSI Layer 1 devices? (Choose two.) *hubs routers bridges switches *repeaters 3 What device is used to connect hosts to an Ethernet LAN and requires a straight-through UTP cable between the hosts and this device? NIC router *switch server 4 What is the most common type of cabling used in LANs? STP *UTP coax fiber 5 In which situations would a crossover cable be used to connect devices in a network? (Choose two.) switch to PC *switch to hub switch to router switch to server *switch to switch 6 Refer to the exhibit. How many collision domains exist in the network? 1 *2 4 7 8 7 What type of cable would be used to make the connection between the console port of a router and a workstation? crossover *rollover straight-through patch 8 Which function is a unique responsibility of the DCE devices shown in the exhibit? transmission of data reception of data *clocking for the synchronous link noise cancellation in transmitted data 9 Which address does a bridge use to make filtering and switching decisions? source MAC source IP *destination MAC destination IP network IP address 10 What is characteristic of the operation of a hub? selectively drops packets that represent potential security risks *forwards a frame out all interfaces except the inbound interface based on IP address, dynamically learns the interfaces to which all devices are attached upon power on, queries the devices on all interface to learn the MAC addresses of the attached devices transmits a frame to the specific interface to which the device with the MAC destination address is attached 11 Users with systems that are attached to a hub are complaining about poor response time. What device could replace the hub and provide immediate response time improvement? router *switch bridge repeater 12 Which of the following are benefits of peer-to-peer networks? (Choose three.) centralized security *easy to create very scalable *no centralized equipment required *centralized administrator not required centralized control of assets 13 Which statement is accurate about a WAN link? *The link transmits data serially. The link uses a maximum distance of 100 meters. The link uses the same transmission rate as all other WAN links use. The link uses the same standardized connector style that is used for all WAN technologies. 14 Which items in the exhibit are DTE devices? A and B B and C C and D *A and D A, B, C, and D 15 At which layer of the OSI model does the MAC address of a NIC reside? physical application network transport *data link session 16 Refer to the exhibit. A technician measured the lengths of the CAT 5e structured cable runs in the exhibit. How should the technician evaluate the cabling shown in the diagram to the network administrator? All cabling to work areas are within specifications. Station A and B may experience intermittent problems because the length exceeds the recommended standard. *Station B may experience intermittent problems because the length exceeds the recommended standard. Station C may experience intermittent network connectivity because the length is less than the recommended standard. Station A and B will have intermittent problems because the length exceeds the recommended standard. Station C will not have network connectivity because the length is less than the recommended standard. 17 Which statement describes a typical use of Gigabit Ethernet? to provide high-speed desktop connectivity for average users to provide connectivity to low to medium volume applications to provide medium volume connectivity to workgroup servers *to provide high-speed connectivity for backbones and cross connects 18 The ends of a UTP cable are shown in the exhibit. Which cable configuration is shown? crossover rollover reversed-pair *straight-through split-pair console 19 The ends of a UTP cable are shown in the exhibit. Which cable configuration is shown? console *crossover rollover reversed-pair split-pair straight-through 20 Which of the following are benefits of a wireless network? (Choose two.) higher data speeds better security *mobility less expensive NIC cards *no need to run cables to hosts >>>>>>>>>>>> Modulo 6 Voto 100 >>>>>>>>>>>> Refer to the exhibit. Host A is communicating with host F. What happens to a frame sent from host A to host F as it travels over the Ethernet segments? *The frame format remains the same across each Ethernet segment. How many hexadecimal digits are in a MAC address? *12 What are three functions of a NIC in a PC? (Choose three.) *A NIC connects the PC to the network media. *A NIC detects collisions on the Ethernet segment. *A NIC passes the contents of selected frames to the upper OSI layers. At what layer of the OSI model does a MAC address reside? *2 A router has an Ethernet, Token Ring, serial, and ISDN interface. Which interfaces will have a MAC address? *Ethernet and Token Ring interfaces In an Ethernet LAN, how does the NIC know when it can transmit data? *An Ethernet NIC transmits data after listening for the absence of a signal on the media. Which characteristics describe carrier sense multiple access collision detect (CSMA/CD)? (Choose three.) *nondeterministic *collision environment *first-come, first-served approach Which two devices can provide full-duplex Ethernet connections? (Choose two.) *NIC *Layer 2 switch On a local area network, one workstation can send data on the line while it is receiving data. What type of data transfer does this describe? *full duplex Refer to the exhibit. The small office network shown in the exhibit consists of four computers connected through a hub. Which configuration would cause collisions and errors on the network? *administratively configured full duplex Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link? *No collisions will occur on this link. Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the same time. How do the hosts respond on the network? (Choose two.) *After the end of the jam signal, Hosts 1, 2, 3, and 4 invoke a backoff algorithm. *If a host has data to transmit after the backoff period of that host, the host checks to determine if the line is idle, before transmitting. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired? *The hosts return to a listen-before-transmit mode. Which statement describes how CSMA/CD on an Ethernet segment manages the retransmission of frames after a collision occurs? *The devices transmitting when the collision occurs DO NOT have priority for retransmission. Refer to the exhibit. A technician wants to increase the available bandwidth for the workstation by allowing the switch and the NIC on the workstation to transmit and receive simultaneously. What will permit this? *full-duplex Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame? *A random delay helps prevent the stations from experiencing another collision during the transmission. In which two layers of the OSI model does Ethernet function? (Choose two.) *data link *physical Which of the following are specified by IEEE standards as sublayers of the OSI data link layer? (Choose two.) *Logical Link Control *Media Access Control Where does the MAC address originate? *burned into ROM on the NIC card >>>>>>>>>>>> Modulo 7 Voto 100 >>>>>>>>>>>> Which Ethernet standard does the IEEE 802.3 standard recommend for backbone installations? *1000BASE-LX Which statements describe Gigabit Ethernet technology? (Choose two.) *typically used for backbone cabling *can be implemented over copper and fiber Which of the following are Fast Ethernet technologies? (Choose two.) *100BASE-FX *100BASE-TX To make sure timing limitations are not violated when implementing a 10 Mbps Ethernet network involving hubs or repeaters, a technician should adhere to which rule? *the 5-4-3 rule At which OSI layer do the differences between standard Ethernet, Fast Ethernet and Gigabit Ethernet occur? *physical layer How does 1000BASE-T use the UTP wire pairs to accomplish transmission? *all four pairs are used in parallel by both hosts to transmit and receive simultaneously What RJ-45 pins are unused when transmitting and receiving data in an Ethernet 100BASE-T Category 5 UTP cable? (Choose two.) *4 and 5 *7 and 8 What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery? *100 meters Which media types can be used in an implementation of a 10BASE-T network? (Choose three.) *Category 5 UTP *Category 5e UTP *Category 3 UTP Which of the following Ethernet technologies are considered legacy Ethernet? (Choose three.) *10BASE2 *10BASE5 *10BASE-T >>>>>>>>>>>> Modulo 6/7 Voto 100 >>>>>>>>>>>> 1 Which statement describes how CSMA/CD on an Ethernet segment manages the retransmission of frames after a collision occurs? *The devices transmitting when the collision occurs DO NOT have priority for retransmission. 2 Which of the following are Fast Ethernet technologies? (Choose two.) *100BASE-FX *100BASE-TX 3 In which two layers of the OSI model does Ethernet function? (Choose two.) *data link *physical 4 Where does the MAC address originate? *burned into ROM on the NIC card 5 What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery? *100 meters 6 How does 1000BASE-T use the UTP wire pairs to accomplish transmission? *all four pairs are used in parallel by both hosts to transmit and receive simultaneously 7 Which two devices can provide full-duplex Ethernet connections? (Choose two.) *NIC *Layer 2 switch 8 At what layer of the OSI model does a MAC address reside? *2 9 Refer to the exhibit. The small office network shown in the exhibit consists of four computers connected through a hub. Which configuration would cause collisions and errors on the network? *administratively configured full duplex 10 In an Ethernet LAN, how does the NIC know when it can transmit data? *An Ethernet NIC transmits data after listening for the absence of a signal on the media. 11 What are three functions of a NIC in a PC? (Choose three.) *A NIC connects the PC to the network media. *A NIC detects collisions on the Ethernet segment. *A NIC passes the contents of selected frames to the upper OSI layers. 12 Which of the following Ethernet technologies are considered legacy Ethernet? (Choose three.) *10BASE2 *10BASE5 *10BASE-T 13 Which of the following are specified by IEEE standards as sublayers of the OSI data link layer? (Choose two.) *Logical Link Control *Media Access Control 14 At which OSI layer do the differences between standard Ethernet, Fast Ethernet and Gigabit Ethernet occur? *physical layer 15 Refer to the exhibit. Host A is communicating with host F. What happens to a frame sent from host A to host F as it travels over the Ethernet segments? *The frame format remains the same across each Ethernet segment. 16 A router has an Ethernet, Token Ring, serial, and ISDN interface. Which interfaces will have a MAC address? *Ethernet and Token Ring interfaces 17 Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link? *No collisions will occur on this link. 18 Which media types can be used in an implementation of a 10BASE-T network? (Choose three.) *Category 5 UTP *Category 5e UTP *Category 3 UTP 19 Which statements describe Gigabit Ethernet technology? (Choose two.) *typically used for backbone cabling *can be implemented over copper and fiber 20 Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the same time. How do the hosts respond on the network? (Choose two.) *After the end of the jam signal, Hosts 1, 2, 3, and 4 invoke a backoff algorithm. *If a host has data to transmit after the backoff period of that host, the host checks to determine if the line is idle, before transmitting. >>>>>>>>>>>> Modulo 8 Voto 100 >>>>>>>>>>>> 1 A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC? *The destination MAC address of the frame is FFFF.FFFF.FFFF. 2 Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.) *repeater *hub 3 A network administrator has a multi-floor LAN to monitor and maintain. Through careful monitoring, the administrator has noticed a large amount of broadcast traffic slowing the network. Which device would you use to best solve this problem? *router 4 What will a bridge do if it receives a frame with a MAC address that is not within the table? *send frame to all ports except source port 5 Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will receive the data when workstation A sends a unicast packet to workstation C? *workstation C 6 An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate? *switch 7 Which networking device reduces the size of both collision domains and broadcast domains? *router 8 Which devices will create multiple collision domains in an Ethernet network? (Choose two.) *switch *router 9 Refer to the exhibit. Forty-eight workstations are connected to a hub. The users are able to connect to the network, but access is very slow. An entry-level technician replaces the 10 Mbps hub with 100 Mbps hub but the problem still exists. What is the most economical way to correct the problem? *Replace the hub with a switch. 10 What is characteristic of the operation of a Layer 2 switch? *uses the destination MAC address to determine the specific interface to forward a frame 11 Refer to the exhibit. How many broadcast domains exist in classroom 240? *1 12 Exhibited is a portion of ABC Company internetwork. Which of the connections can be full duplex? *segments 2, 3, and 4 13 What is used to prevent Layer 2 switching loops? *Spanning-Tree Protocol 14 Two newly hired technicians are discussing the implementation of a new LAN. One technician proposes installing a hub. The other technician advises installing a switch. Which statements are true about the differences between a hub and a switch? (Choose two.) *A switch provides more throughput to hosts on a LAN. *A switch provides a collision-free environment on a LAN. 15 Which networking devices use the MAC address to make forwarding decisions? (Choose two.) *bridge *switch >>>>>>>>>>>> Modulo 9 Voto >>>>>>>>>>>> 1 How many usable hosts are available given a Class C IP address with the default subnet mask? *254 2 When a host has an empty ARP cache, what is the next step the host will take to find the destination MAC address of a remote host? *sends an ARP request as a broadcast to all hosts in the local network 3 Which IPv4 class of addresses provides the most networks? *Class C 4 Refer to the exhibit. Which two statements are correct in reference to the output shown? (Choose two.) *The host automatically obtained the IP addresses 192.168.1.100. *The host received the IP address from the router on the local LAN segment. 5 Which TCP/IP model layer supports both LAN and WAN technologies? *network access layer 6 Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork? *255.255.255.0 7 What is the purpose of a DHCP server on a network? *to assign IP addresses dynamically to hosts 8 Which statement accurately describes public IP addresses? *Public IP addresses must be unique across the entire Internet. 9 Refer to the exhibit. Based on the information shown, which two statements are true? (Choose two.) *The only remote locations that can be reached from this host are 192.168.1.97 and 192.168.1.254. *If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97, no ARP request is required. 10 What are two facts about how ARP resolves an IP address to a MAC address? (Choose two.) *The originating host broadcasts an ARP request packet and each host in a local network receives this packet. *The host with the specified destination IP address sends an ARP reply packet containing its MAC address back to the originating host. 11 Refer to the exhibit. Which devices are recommended to have the IP addresses manually configured? *all servers 12 Which IPv4 class provides the highest number of host addresses per network? *Class A 13 Why is IP considered a best-effort protocol? *IP does not provide acknowledgment of the data delivery. 14 Which three addresses are considered to be private addresses? (Choose three.) *10.45.09.23 *172.17.78.98 *192.168.45.23 15 Which two statements correctly describe the IP address 127.0.0.1? (Choose two.) *It belongs to the Class A range of addresses. *It is reserved for loopback testing. 16 What is the primary responsibility of the transport layer? *defines end-to-end connectivity between host applications 17 Why were private IP addresses developed? *to minimize the utilization of reserved IP addresses 18 Refer to the exhibit. What is the purpose of the Obtain an IP address automatically option shown in the exhibit? *to configure the computer to use DHCP 19 Refer to the exhibit. The small office LAN shown in the exhibit may eventually be connected to the Internet. According to Cisco best practice, which IP network addresses should be used? *192.168.67.0 20 What is the network broadcast address for a Class C address of 192.168.32.0 with the default subnet mask? *192.168.32.255 >>>>>>>>>>>> Modulo 10 Voto 100 >>>>>>>>>>>> 1 Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.) *destination IP address: 192.168.10.134 *destination MAC address: 9999.DADC.1234 2 What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface? *the Layer 2 source and destination address *the Layer 3 source and destination address 3 What is the primary purpose of the routing process? *to find paths from one network or subnet to another 4 How does a router decide where the contents of a received frame should be forwarded? *by matching destination IP addresses with networks in the routing table 5 Refer to the exhibit. A student in the Cisco network class has designed a small office network to enable hosts to access the Internet. What recommendation should the teacher provide to the student in regards to the network design? *Replace the Layer 2 switch with a router. 6 Which device would add security to a network by not forwarding broadcasts? *router 7 What do switches and routers use to make forwarding decisions? *Switches use MAC addresses. Routers use IP addresses. 8 At which layer of the OSI model does the device reside that is functioning as the default gateway for hosts on a network? *Layer 3 9 Which type of routing uses manual entry of information and does not scale well in large internetworks? *static 10 Which type of routing allows routers to adapt to network changes? *dynamic routing 11 How does subnetting provide some level of security in a network? *The broadcasts are contained within a subnet. 12 What is the purpose of a subnet mask in a network? *A subnet mask is used to determine in which subnet an IP address belongs. 13 Refer to the exhibit. A newly hired technician is testing the connectivity of all hosts by issuing a ping command. The technician notices that a default gateway is not configured on all the hosts, but all hosts have connectivity between hosts, a fact which seems to confuse the technician. How would you explain the connectivity to the technician? *The hosts are all in one LAN, so default gateway information is not needed. 14 Refer to the exhibit. A newly hired technician is testing the connectivity of all hosts by issuing a ping command. The technician notices that a default gateway is not configured on all the hosts, but all hosts have connectivity between hosts, a fact which seems to confuse the technician. How would you explain the connectivity to the technician? *The hosts in the network only require that one host has a gateway configured. 15 A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet? *255.255.255.224 16 Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network. By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the IP server properties to get connectivity to the network through the router? *IP address: 192.168.10.38 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.33 17 Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem? *The default gateway is on a different subnet from the host. 18 Host A is connected to the LAN, but it cannot connect to the Internet. The host configuration is shown in the exhibit. What are the two problems with this configuration? (Choose two.) *The host subnet mask is incorrect. *The default gateway is on a different network than the host. 19 Refer to the exhibit. A technician is planning an addressing scheme for a branch office as shown in the exhibit. What is the status of the intended network? The configuration will work as planned. *The addresses on the router LAN interfaces are on the same subnetwork. 20 Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem? *Host 1 and host 2 are on different networks. 21 Refer to the exhibit. A network administrator is planning the addressing scheme for the LAN using 172.25.14.0/26. The hosts are to be assigned addresses 172.25.14.1 - 172.25.14.25. The LAN interface of the router is to be configured using 172.25.14.63 as the IP address. What would describe this addressing scheme? *The router LAN interface is being assigned a broadcast address. 22 An IP network address has been subnetted so that every subnetwork has 14 usable host IP addresses. What is the appropriate subnet mask for the newly created subnetworks? *255.255.255.240 23 Which statements describe Layer 2 and Layer 3 packet address changes as the packet traverses from router to router? (Choose two.) *Layer 3 source and destination addresses do not change when the packet traverse. *Layer 2 frame header and trailer are removed and replaced at every Layer 3 device. 24 Company XYZ uses a network address of 192.168.4.0. It uses the mask of 255.255.255.224 to create subnets. What is the maximum number of usable hosts in each subnet? *30 25 Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong? *172.32.0.0 >>>>>>>>>>>> Modulo 9/10 Voto 89,7 >>>>>>>>>>>> 1. What is the primary responsibility of the transport layer? *defines end-to-end connectivity between host applications 2. Why is IP considered a best-effort protocol? *IP does not provide acknowledgment of the data delivery. 3. Which two statements correctly describe the IP address 127.0.0.1? (Choose two.) *It belongs to the Class A range of addresses. *It is reserved for loopback testing. 4. Refer to the exhibit. Which two statements are correct in reference to the output shown? (Choose two.) *The host automatically obtained the IP addresses 192.168.1.100. *The host received the IP address from the router on the local LAN segment. 5. Which three addresses are considered to be private addresses? (Choose three.) *10.45.09.23 *172.17.78.98 *192.168.45.23 6. What is the purpose of a DHCP server on a network? *to assign IP addresses dynamically to hosts 7. Refer to the exhibit. The small office LAN shown in the exhibit may eventually be connected to the Internet. According to Cisco best practice, which IP network addresses should be used? *192.168.67.0 8. Refer to the exhibit. Which devices are recommended to have the IP addresses manually configured? *all servers 9. Refer to the exhibit. Based on the information shown, which two statements are true? (Choose two.) *If a packet is sent to a network device other than 192.168.1.97 and 192.168.1.254, an ARP request must be used. *If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97, no ARP request is required. 10. Which TCP/IP model layer supports both LAN and WAN technologies? *network access layer 11. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork? *255.255.255.0 12. Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.) *destination IP address: 192.168.10.134 *destination MAC address: 9999.DADC.1234 13. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface? *the Layer 2 source and destination address 14. Host A is connected to the LAN, but it cannot connect to the Internet. The host configuration is shown in the exhibit. What are the two problems with this configuration? (Choose two.) *The host subnet mask is incorrect. *The default gateway is on a different network than the host. 15. An IP network address has been subnetted so that every subnetwork has 14 usable host IP addresses. What is the appropriate subnet mask for the newly created subnetworks? *255.255.255.240 16. A company is using a Class B IP addressing scheme and expects to need as many as 100 networks. What is the correct subnet mask to use with the network configuration? *255.255.254.0 17. Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network. By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the IP server properties to get connectivity to the network through the router? *IP address: 192.168.10.38 Subnet mask: 255.255.255.248 Default gateway: 192.168.10.33 18. Refer to the exhibit. A technician is planning an addressing scheme for a branch office as shown in the exhibit. What is the status of the intended network? *The addresses on the router LAN interfaces are on the same subnetwork. 19. Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem? *Host 1 and host 2 are on different networks. 20. Refer to the exhibit. A network administrator is planning the addressing scheme for the LAN using 172.25.14.0/26. The hosts are to be assigned addresses 172.25.14.1 – 172.25.14.25. The LAN interface of the router is to be configured using 172.25.14.63 as the IP address. What would describe this addressing scheme? *The router LAN interface is being assigned a broadcast address. 21. Which type of routing allows routers to adapt to network changes? *dynamic routing 22. How does a router decide where the contents of a received frame should be forwarded? *by matching destination IP addresses with networks in the routing table 23. What do switches and routers use to make forwarding decisions? *Switches use MAC addresses. Routers use IP addresses. 24. Refer to the exhibit. A newly hired technician is testing the connectivity of all hosts by issuing a ping command. The technician notices that a default gateway is not configured on all the hosts, but all hosts have connectivity between hosts, a fact which seems to confuse the technician. How would you explain the connectivity to the technician? *The hosts are all in one LAN, so default gateway information is not needed. 25. Given a host with the IP address 172.32.65.13 and a default subnet mask, to which network does the host belong? *172.32.0.0 >>>>>>>>>>>> Modulo 11 Voto >>>>>>>>>>>> 1 What three pieces of information does the transport layer use to manage the communication of separate data streams between hosts? (Choose three.) - port numbers - sequence numbers - acknowledgment numbers 2 TCP is referred to as connection-oriented. What does this mean? - TCP negotiates a session for data trannsfer between hosts. 3 FTP provides a reliable, connection-oriented service for transferring of files. Which transport layer protocol is used for data transfer when this service is being used? - TCP 4 An application is using a protocol that exchanges data without using windowing or flow control and must rely on higher layer protocols to transmit data. Which protocol and transfer method are being used? - UDP, connectionless 5 Which Application layer protocol is widely used to support resolving host names to IP addresses? - DNS 6 What does the http portion of the URL communicate to a web browser? - The web browser is notified as to whicch protocol to use. 7. What is the purpose of TCP/UDP port numbers? - track different conversations crossingg the network at the same time 8 What are the features of the User Datagram Protocol (UDP). (Choose three.) - no guaranteed delivery of datagrams - reliability provided by the applicatioon layer - connectionless 9 Which protocol is used by e-mail servers to communicate with each other? - SMTP 10 Which application layer protocol allows network devices to exchange management information? - SNMP 11 Which protocol is used to transfer files from computer to computer but is considered connectionless? - TFTP 12 Which layer of the OSI model can provide a connection-oriented, reliable data transfer between two hosts? - Transport 13 Which of the following are primary duties of the OSI transport layer? (Choose two.) - end-to-end connectivity - flow control 14 When the receiving workstation detects an error in the data it has received, it does not acknowledge receipt of the data. The source workstation retransmits the unacknowledged data. Which layer of the OSI model supports this process of retransmission? - transport 15 Which port numbers are commonly assigned for FTP use? (Choose two.) - 20 - 21