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Multiple Choice Quiz
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Please answer all questions.




1The Internet model consists of _______ layers.
A)Three
B)Five
C)Seven
D)Eight



2The process-to-process delivery of the entire message is the responsibility of the _______ layer.
A)Network
B)Transport
C)Application
D)Physical



3The _______ layer is the layer closest to the transmission medium.
A)Physical
B)Data link
C)Network
D)Transport



4Mail services are available to network users through the _______ layer.
A)Data link
B)Physical
C)Transport
D)Application



5As the data packet moves from the upper to the lower layers, headers are _______.
A)Added
B)Removed
C)Rearranged
D)Modified



6The _______ layer lies between the network layer and the application layer.
A)Physical
B)Data link
C)Transport
D)None of the above



7Layer 2 lies between the physical layer and the _______ layer.
A)Network
B)Data link
C)Transport
D)None of the above



8When data are transmitted from device A to device B, the header from A's layer 4 is read by B's _______ layer.
A)Physical
B)Transport
C)Application
D)None of the above



9The _______ layer changes bits into electromagnetic signals.
A)Physical
B)Data link
C)Transport
D)None of the above



10Which of the following is an application layer service?
A)Remote log-in
B)File transfer and access
C)Mail service
D)All the above



11Why 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



12The _______ model shows how the network functions of a computer ought to be organized.
A)CCITT
B)OSI
C)ISO
D)ANSI



13The physical layer is concerned with the movement of _______ over the physical medium.
A)programs
B)dialogs
C)protocols
D)bits



14The OSI model consists of _______ layers.
A)three
B)five
C)seven
D)eight



15In 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



16In the OSI model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's _______ layer.
A)physical
B)transport
C)session
D)presentation



17In 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



18In the OSI model, encryption and decryption are functions of the ________ layer.
A)transport
B)session
C)presentation
D)application



19When 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



20To 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



21IPv6 has _______ -bit addresses.
A)32
B)64
C)128
D)variable



22ICMPv6 includes _______.
A)IGMP
B)ARP
C)RARP
D)a and b



23The ______ 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



24The ______ 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



25The_________ 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



26The Internetworking Protocol (IP) is a ________ protocol.
A)reliable
B)connection-oriented
C)both a and b
D)none of the above



27_______ 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



28__________ provides full transport layer services to applications.
A)TCP
B)UDP
C)ARP
D)none of the above



29The ________ 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



30Ethernet 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



31A port address in TCP/IP is ______ bits long.
A)32
B)48
C)16
D)none of the above



32The ____ created a model called the Open Systems Interconnection, which allows diverse systems to communicate.
A)OSI
B)ISO
C)IEEE
D)none of the above



33The seven-layer _____ model provides guidelines for the development of universally compatible networking protocols.
A)OSI
B)ISO
C)IEEE
D)none of the above



34The physical, data link, and network layers are the ______ support layers.
A)user
B)network
C)both (a) and (b)
D)neither (a) nor (b)



35The session, presentation, and application layers are the ____ support layers.
A)user
B)network
C)both (a) and (b)
D)neither (a) nor (b)



36The _______ layer links the network support layers and the user support layers.
A)transport
B)network
C)data link
D)session



37The _______ layer coordinates the functions required to transmit a bit stream over a physical medium.
A)transport
B)network
C)data link
D)physical



38The _______ layer is responsible for delivering data units from one station to the next without errors.
A)transport
B)network
C)data link
D)physical



39The ______ layer is responsible for the source-to-destination delivery of a packet across multiple network links.
A)transport
B)network
C)data link
D)physical



40The ________ layer is responsible for the process-to-process delivery of the entire message.
A)transport
B)network
C)data link
D)physical



41The ______ layer establishes, maintains, and synchronizes the interactions between communicating devices.
A)transport
B)network
C)session
D)physical



42The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format.
A)transport
B)network
C)data link
D)presentation



43The _________ layer enables the users to access the network.
A)transport
B)application
C)data link
D)physical



44TCP/IP is a ______ hierarchical protocol suite developed ____ the OSI model.
A)seven-layer; before
B)five-layer; before
C)six-layer; before
D)five-layer; after



45The TCP/IP _______ layer is equivalent to the combined session, presentation, and application layers of the OSI model.
A)application
B)network
C)data link
D)physical



46The ________ address, also known as the link address, is the address of a node as defined by its LAN or WAN.
A)physical
B)IP
C)port
D)specific



47The ____ address uniquely defines a host on the Internet.
A)physical
B)IP
C)port
D)specific



48The_____ address identifies a process on a host.
A)physical
B)IP
C)port
D)specific







Forouzan: DCNOnline Learning Center

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