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1 | |
Stream Control Transmission Protocol (SCTP) is a new _____________protocol. |
| | A) | reliable, character-oriented |
| | B) | reliable, message-oriented |
| | C) | unreliable, message-oriented |
| | D) | none of the above |
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2 | |
SCTP allows __________ service in each association. |
| | A) | single stream |
| | B) | multistream |
| | C) | double stream |
| | D) | none of the above |
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3 | |
SCTP association allows _____________ for each end. |
| | A) | only one IP address |
| | B) | multiple IP addresses |
| | C) | only two IP address |
| | D) | none of the above |
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4 | |
In SCTP, a data chunk is numbered using ________. |
| | A) | a TSN |
| | B) | an SI |
| | C) | an SSN |
| | D) | none of the above |
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5 | |
To distinguish between different streams, SCTP uses ___________. |
| | A) | a TSN |
| | B) | an SI |
| | C) | an SSN |
| | D) | none of the above |
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6 | |
To distinguish between different data chunks belonging to the same stream, SCTP uses ___________. |
| | A) | TSNs |
| | B) | SIs |
| | C) | SSNs |
| | D) | none of the above |
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7 | |
TCP has ____________; SCTP has ____________. |
| | A) | packets; segments |
| | B) | segments; packets |
| | C) | segments; frames |
| | D) | none of the above |
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8 | |
The control information in SCTP is included in the ________. |
| | A) | header control field |
| | B) | control chunks |
| | C) | data chunks |
| | D) | none of the above |
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9 | |
An SCTP packet can carry __________. |
| | A) | only one data chunk |
| | B) | several data chunks |
| | C) | no data chunks |
| | D) | none of the above |
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10 | |
Options in SCTP ____________________________. |
| | A) | are handled by defining new chunk types |
| | B) | are included in the base header of a packet |
| | C) | are handled by the data chunks |
| | D) | none of the above |
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11 | |
The general header in SCTP is _______ bytes. |
| | A) | 20 |
| | B) | 8 |
| | C) | 12 |
| | D) | none of the above |
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12 | |
An SCTP sequence number (TSN) is located in the _______. |
| | A) | general header |
| | B) | data chunk header |
| | C) | control chunk header |
| | D) | none of the above |
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13 | |
In SCTP, the acknowledgment number and window size are part of each ________. |
| | A) | data chunk |
| | B) | control chunk |
| | C) | a or b |
| | D) | none of the above |
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14 | |
There is no need for a header length field in SCTP because ________________. |
| | A) | there are no options in the general header |
| | B) | the size of the header is fixed |
| | C) | both a and b |
| | D) | none of the above |
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15 | |
The checksum in SCTP is ________ bits. |
| | A) | 16 |
| | B) | 32 |
| | C) | 64 |
| | D) | none of the above |
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16 | |
The association identifier in SCTP is __________________ . |
| | A) | a unique verification tag |
| | B) | a combination of logical and port addresses |
| | C) | either a or b |
| | D) | none of the above |
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17 | |
The association identifier in SCTP cannot be a combination of logical and port addresses because of ________________. |
| | A) | multistream services |
| | B) | multihoming service |
| | C) | both a and b |
| | D) | none of the above |
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18 | |
In SCTP, control information and data information are carried in _______ chunks. |
| | A) | the same chunk |
| | B) | different chunks |
| | C) | either a or b |
| | D) | none of the above |
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19 | |
Control chunks in SCTP ___________________. |
| | A) | never use a TSN, IS, or SSN number |
| | B) | use a TSN, but no IS or SSN number |
| | C) | use a TSN or IS, but no SSN number |
| | D) | none of the above |
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20 | |
In SCTP, TSN is a cumulative number identifying the _______; SI defines the _______; SSN defines the ________. |
| | A) | association; chunks in a stream; stream |
| | B) | association; stream; chunks in a stream |
| | C) | chunk; stream; association |
| | D) | none of the above |
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21 | |
In SCTP, acknowledgment numbers are used to acknowledge _____________. |
| | A) | both data chunks and control chunks |
| | B) | only control chunks |
| | C) | only data chunks |
| | D) | none of the above |
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22 | |
In an SCTP packet, control chunks come ___________ data chunks. |
| | A) | after |
| | B) | before |
| | C) | a or b |
| | D) | none of the above |
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23 | |
In SCTP, chunks need to terminate on a _______boundary. |
| | A) | 16-bit |
| | B) | 32-bit |
| | C) | 64-bit |
| | D) | none of the above |
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24 | |
In SCTP, the number of padding bytes are _________ in the value of the length field. |
| | A) | included |
| | B) | not included |
| | C) | a or b |
| | D) | none of the above |
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25 | |
In SCTP, a DATA chunk ______carry data belonging to more than one message. |
| | A) | can |
| | B) | cannot |
| | C) | either a or b |
| | D) | none of the above |
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26 | |
In SCTP, a message ________ split into several chunks. |
| | A) | can be |
| | B) | cannot be |
| | C) | either a or b |
| | D) | none of the above |
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27 | |
In SCTP, the data field of the DATA chunk must carry at least _________ byte of data, which means the value of length field cannot be less than ___________. |
| | A) | 8; 24 |
| | B) | 1; 17 |
| | C) | 40; 56 |
| | D) | none of the above |
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28 | |
In SCTP, ___________ can be carried in a packet that carries an INIT chunk. |
| | A) | only data chunks |
| | B) | only control chunks |
| | C) | no other chunk |
| | D) | none of the above |
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29 | |
A connection in SCTP is called an ____________. |
| | A) | negotiation |
| | B) | association |
| | C) | transmission |
| | D) | none of the above |
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30 | |
The acknowledgment in SCTP defines the cumulative TSN, the TSN of the ____________ . |
| | A) | last data chunk received in order |
| | B) | next data chunk to be received |
| | C) | last data chunk received out of order |
| | D) | none of the above |
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31 | |
A DATA chunk arrives with its B/E bits equal to 00. It is ___________. |
| | A) | the first fragment |
| | B) | the last fragment |
| | C) | the middle fragment |
| | D) | not fragmented |
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32 | |
A DATA chunk arrives with its B/E bits equal to 01. It is ___________. |
| | A) | the first fragment |
| | B) | the last fragment |
| | C) | the middle fragment |
| | D) | not fragmented |
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33 | |
A DATA chunk arrives with its B/E bits equal to 10. It is ___________. |
| | A) | the first fragment |
| | B) | the last fragment |
| | C) | the middle fragment |
| | D) | not fragmented |
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34 | |
A DATA chunk arrives with its B/E bits equal to 11. It is ___________. |
| | A) | the first fragment |
| | B) | the last fragment |
| | C) | the middle fragment |
| | D) | not fragmented |
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35 | |
The number of states in the state transition diagram of SCTP is __________ the number of states in the state transition diagram of TCP. |
| | A) | less than |
| | B) | greater than |
| | C) | equal |
| | D) | can be any of the above cases |
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36 | |
Which chunk is not involved in association establishment? |
| | A) | INIT chunk |
| | B) | COOKIE ECHO chunk |
| | C) | SACK chunk |
| | D) | all are involved |
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37 | |
Which chunk probes the condition of an association? |
| | A) | ERROR chunk |
| | B) | HEARTBEAT chunk |
| | C) | SACK chunk |
| | D) | none of the above |
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38 | |
The _______ chunk is sent when an end point finds an error in a received packet. |
| | A) | ERROR |
| | B) | ABORT |
| | C) | SHUTDOWN |
| | D) | none of the above |
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39 | |
In SCTP, duplicate messages are _______. |
| | A) | discarded |
| | B) | tracked |
| | C) | b and c |
| | D) | none of the above |
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40 | |
SCTP strategies for congestion control include _______. |
| | A) | exponential increase |
| | B) | additive increase |
| | C) | multiplicative decrease |
| | D) | all of the above |
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2006 McGraw-Hill Higher Education