Cisco CCNA - Chapter 2 Revision Test

3. Which of the following definitions best describes what network standards are?

A set of rules or procedures that are either widely used or officially specified

A connection of computers, printers, and other devices for purpose of communication

A set of rules that governs how computer workstations exchange information

A device connected to a workstation to provide auxillary functions

A combination of widely accepted theories

	1. What answer correctly describes the five conversion steps of data encapsulation (when one computer sends an email to another computer)?
		Data, Segment, Packet, Frame, Bits
		Bits, Frames, Packets, Segments, Data
		Packet, Segment, Data, Bit, Frame
		Segment, Packet, Frame, Data, Bit

	2. Which model is used to simplify the problem of moving information from one computer to another? (choose one answer)
		ISO model
		DOD reference model
		OSI reference model
		Application Layer
		OLE model

	4. Which protocol is provided at the Transport Layer of the OSI layer
		IP
		TCP
		FTP
		HTTP

	5. Which are the application layers of the OSI model?
		Transport, Network, Data Link, Physical
		Application, Presentation, Session
		Application, Transport
		Internet, Network Access

	7. Which definition best describes the Session layer of the OSI model
		Segments data from the sending host's system and reassembles the data into a data stream on the receiving host's system
		Establishes, manages, and terminates sessions between two communicating hosts
		Provides connectivity and path selection between two host systems
		Provides reliable transit of data across a physical link

	8. Which statement is not true about the OSI model
		Simplifies teaching and learning
		Reduces complexity
		Standardizes interfaces
		Facilitates modular engineering
		Accelerates evolution
		Ensures inoperable technology
		none of the above

	9. Which word best describes "a set of rules that make communication on a network more efficient"
		Model
		Language
		ISO
		Protocol

	10. Which of the following is not network media
		Co-axial cable
		Cat - 5
		Fibre Optic
		Atmosphere
		None of the above

	11. Which best describes a data packet
		A packet that is full of data
		Information that is sent from the destination computer to the source computer
		logically grouped information that moves between computer systems
		Data that is encrypted before being sent between a source and a destination computer

	12. During the encapsulation process the PDU at the Network layer is
		Data
		Frames
		Bits
		Packets

	13. Physical addresses are encapsulated in the data packet at which OSI layer
		Physical
		Data Link
		Network
		Transport

	14. A layer 3 PDU will contain the following information
		Physical source and destination addresses
		Physical and Logical source and destination addresses
		Logical source and destination addresses
		No Logical or Physical addresses are added at this layer

	15. Which is not true about the TCP/IP and OSI models
		They are both have layers
		Network professional need to know both
		TCP/IP model combines the OSI Data Link and Physical layers into one layer
		TCP/IP has Application layers and Data Flow layers

	16. Which layer can be thought of a "frames and media access"
		Transport
		Network
		Data Link
		Physical

	19. Which of the following are Electromagnetic Waves (EM), tick all that apply
		X Rays
		Gamma Rays
		Infrared light
		Power waves
		Radio waves

	20. Which is not a TCP application
		FTP
		TFTP
		DNS
		SMTP

	17. Which is the correct order of the layer in the TCP/IP model
		Application, Transport, Internet, Network Access
		Network Access, Internet, Application, Transport
		Application, Network Access, Transport, Internet
		Application, Transport, Network Access, Internet

	18. Which layer can be described by "quality of service"
		Presentation
		Session
		Transport
		Network