Chapter 2 Quiz

1		Why was the OSI model developed?
			A)	manufacturers disliked the TCP/IP protocol suite
			B)	the rate of data transfer was increasing exponentially
			C)	standards were needed to allow any two systems to communicate
			D)	none of the above
2		The _______ model shows how the network functions of a computer ought to be organized.
			A)	CCITT
			B)	OSI
			C)	ISO
			D)	ANSI
3		The physical layer is concerned with the movement of _______ over the physical medium.
			A)	programs
			B)	dialogs
			C)	protocols
			D)	bits
4		The OSI model consists of _______ layers.
			A)	three
			B)	five
			C)	seven
			D)	eight
5		In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______.
			A)	added
			B)	removed
			C)	rearranged
			D)	modified
6		In the OSI model, when data is transmitted from device A to device B, the header from Aís layer 5 is read by Bís _______ layer.
			A)	physical
			B)	transport
			C)	session
			D)	presentation
7		In the OSI model, which layer functions as a liaison between user support layers and network support layers?
			A)	network layer
			B)	physical layer
			C)	transport layer
			D)	session layer
8		In the OSI model, what is the main function of the transport layer?
			A)	node-to-node delivery
			B)	process-to-process message delivery
			C)	synchronization
			D)	updating and maintenance of routing tables
9		In the OSI model, encryption and decryption are functions of the ________ layer.
			A)	transport
			B)	session
			C)	presentation
			D)	application
10		In the OSI model, which of the following is an application layer service?
			A)	network virtual terminal
			B)	file transfer, access, and management
			C)	mail service
			D)	all of the above
11		When a host on network A sends a message to a host on network B, which address does the router look at?
			A)	port
			B)	logical
			C)	physical
			D)	none of the above
12		To deliver a message to the correct application program running on a host, the _______ address must be consulted.
			A)	port
			B)	IP
			C)	physical
			D)	none of the above
13		IPv6 has _______ -bit addresses.
			A)	32
			B)	64
			C)	128
			D)	variable
14		ICMPv6 includes _______.
			A)	IGMP
			B)	ARP
			C)	RARP
			D)	a and b
15		The ______ layer is responsible for moving frames from one hop (node) to the next.
			A)	physical
			B)	data link
			C)	transport
			D)	none of the above
16		The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.
			A)	physical
			B)	data link
			C)	network
			D)	none of the above
17		The_________ layer is responsible for the delivery of a message from one process to another.
			A)	physical
			B)	transport
			C)	network
			D)	none of the above
18		The Internetworking Protocol (IP) is a ________ protocol.
			A)	reliable
			B)	connection-oriented
			C)	both a and b
			D)	none of the above
19		_______ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer.
			A)	TCP
			B)	UDP
			C)	IP
			D)	none of the above
20		__________ provides full transport layer services to applications.
			A)	TCP
			B)	UDP
			C)	ARP
			D)	none of the above
21		The ________ address, also known as the link address, is the address of a node as defined by its LAN or WAN.
			A)	port
			B)	physical
			C)	logical
			D)	none of the above
22		Ethernet uses a ______ physical address that is imprinted on the network interface card (NIC).
			A)	32-bit
			B)	64-bit
			C)	6-byte
			D)	none of the above
23		Which of the following can be an Ethernet physical address?
			A)	01:02:01:2C:4B
			B)	07:01:02:01:2C:4B:2C
			C)	07:01:02:01:2C:4B
			D)	none of the above
24		A port address in TCP/IP is ______ bits long.
			A)	32
			B)	48
			C)	16
			D)	none of the above
25		IP Version 5 was a proposal based on the ______ model. This version never went beyond the proposal stage due to extensive layer changes and the projected expense.
			A)	TCP
			B)	OSI
			C)	IEEE
			D)	none of the above