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1 | |
The Internet model consists of _______ layers. |
|
| | A) | Three |
| | B) | Five |
| | C) | Seven |
| | D) | Eight |
|
2 | |
The process-to-process delivery of the entire message is the responsibility of the _______ layer. |
|
| | A) | Network |
| | B) | Transport |
| | C) | Application |
| | D) | Physical |
|
3 | |
The _______ layer is the layer closest to the transmission medium. |
|
| | A) | Physical |
| | B) | Data link |
| | C) | Network |
| | D) | Transport |
|
4 | |
Mail services are available to network users through the _______ layer. |
|
| | A) | Data link |
| | B) | Physical |
| | C) | Transport |
| | D) | Application |
|
5 | |
As the data packet moves from the upper to the lower layers, headers are _______. |
|
| | A) | Added |
| | B) | Removed |
| | C) | Rearranged |
| | D) | Modified |
|
6 | |
The _______ layer lies between the network layer and the application layer. |
|
| | A) | Physical |
| | B) | Data link |
| | C) | Transport |
| | D) | None of the above |
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7 | |
Layer 2 lies between the physical layer and the _______ layer. |
|
| | A) | Network |
| | B) | Data link |
| | C) | Transport |
| | D) | None of the above |
|
8 | |
When 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 |
|
9 | |
The _______ layer changes bits into electromagnetic signals. |
|
| | A) | Physical |
| | B) | Data link |
| | C) | Transport |
| | D) | None of the above |
|
10 | |
Which of the following is an application layer service? |
|
| | A) | Remote log-in |
| | B) | File transfer and access |
| | C) | Mail service |
| | D) | All the above |
|
11 | |
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 |
|
12 | |
The _______ model shows how the network functions of a computer ought to be organized. |
|
| | A) | CCITT |
| | B) | OSI |
| | C) | ISO |
| | D) | ANSI |
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13 | |
The physical layer is concerned with the movement of _______ over the physical medium. |
|
| | A) | programs |
| | B) | dialogs |
| | C) | protocols |
| | D) | bits |
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14 | |
The OSI model consists of _______ layers. |
|
| | A) | three |
| | B) | five |
| | C) | seven |
| | D) | eight |
|
15 | |
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 |
|
16 | |
In 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 |
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17 | |
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 |
|
18 | |
In the OSI model, encryption and decryption are functions of the ________ layer. |
|
| | A) | transport |
| | B) | session |
| | C) | presentation |
| | D) | application |
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19 | |
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 |
|
20 | |
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 |
|
21 | |
IPv6 has _______ -bit addresses. |
|
| | A) | 32 |
| | B) | 64 |
| | C) | 128 |
| | D) | variable |
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22 | |
ICMPv6 includes _______. |
|
| | A) | IGMP |
| | B) | ARP |
| | C) | RARP |
| | D) | a and b |
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23 | |
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 |
|
24 | |
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 |
|
25 | |
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 |
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26 | |
The Internetworking Protocol (IP) is a ________ protocol. |
|
| | A) | reliable |
| | B) | connection-oriented |
| | C) | both a and b |
| | D) | none of the above |
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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 |
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29 | |
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 |
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30 | |
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 |
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31 | |
A port address in TCP/IP is ______ bits long. |
|
| | A) | 32 |
| | B) | 48 |
| | C) | 16 |
| | D) | none of the above |
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32 | |
The ____ 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 |
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33 | |
The seven-layer _____ model provides guidelines for the development of universally compatible networking protocols. |
|
| | A) | OSI |
| | B) | ISO |
| | C) | IEEE |
| | D) | none of the above |
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34 | |
The physical, data link, and network layers are the ______ support layers. |
|
| | A) | user |
| | B) | network |
| | C) | both (a) and (b) |
| | D) | neither (a) nor (b) |
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35 | |
The session, presentation, and application layers are the ____ support layers. |
|
| | A) | user |
| | B) | network |
| | C) | both (a) and (b) |
| | D) | neither (a) nor (b) |
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36 | |
The _______ layer links the network support layers and the user support layers. |
|
| | A) | transport |
| | B) | network |
| | C) | data link |
| | D) | session |
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37 | |
The _______ layer coordinates the functions required to transmit a bit stream over a physical medium. |
|
| | A) | transport |
| | B) | network |
| | C) | data link |
| | D) | physical |
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38 | |
The _______ layer is responsible for delivering data units from one station to the next without errors. |
|
| | A) | transport |
| | B) | network |
| | C) | data link |
| | D) | physical |
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39 | |
The ______ 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 |
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40 | |
The ________ layer is responsible for the process-to-process delivery of the entire message. |
|
| | A) | transport |
| | B) | network |
| | C) | data link |
| | D) | physical |
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41 | |
The ______ layer establishes, maintains, and synchronizes the interactions between communicating devices. |
|
| | A) | transport |
| | B) | network |
| | C) | session |
| | D) | physical |
|
42 | |
The _______ 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 |
|
43 | |
The _________ layer enables the users to access the network. |
|
| | A) | transport |
| | B) | application |
| | C) | data link |
| | D) | physical |
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44 | |
TCP/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 |
|
45 | |
The 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 |
|
46 | |
The ________ 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 |
|
47 | |
The ____ address uniquely defines a host on the Internet. |
|
| | A) | physical |
| | B) | IP |
| | C) | port |
| | D) | specific |
|
48 | |
The_____ address identifies a process on a host. |
|
| | A) | physical |
| | B) | IP |
| | C) | port |
| | D) | specific |