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1 | |
_______ is the standard mechanism provided by TCP/IP for copying a file from one host to another. |
| | A) | TELNET |
| | B) | SMTP |
| | C) | TFTP |
| | D) | none of the choices are correct |
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2 | |
FTP uses the services of ________. |
| | A) | UDP |
| | B) | IP |
| | C) | TCP |
| | D) | none of the choices are correct |
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3 | |
In FTP, the well-known port ____ is used for the control connection and the well-known port ________ for the data connection. |
| | A) | 21; 22 |
| | B) | 21; 20 |
| | C) | 20; 21 |
| | D) | none of the choices are correct |
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4 | |
In FTP, _______ is the service type used by the IP protocol because this is an interactive connection between a user (human) and a server. |
| | A) | maximize throughput |
| | B) | minimize delay |
| | C) | minimize error |
| | D) | none of the choices are correct |
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5 | |
For control connection, FTP uses the __________ character set |
| | A) | regular ASCII |
| | B) | EBCDIC |
| | C) | NVT ASCII |
| | D) | none of the choices are correct |
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6 | |
During an FTP session the control connection is opened _______. |
| | A) | exactly once |
| | B) | exactly twice |
| | C) | as many times as necessary |
| | D) | none of the choices are correct |
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7 | |
During an FTP session the data connection is opened _______. |
| | A) | exactly once |
| | B) | exactly twice |
| | C) | as many times as necessary |
| | D) | none of the choices are correct |
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8 | |
In FTP, a file can be organized into records, pages, or a stream of bytes. These are types of an attribute called _______. |
| | A) | file types |
| | B) | data structures |
| | C) | transmission modes |
| | D) | none of the choices are correct |
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9 | |
In FTP, there are three types of _______: stream, block, and compressed. |
| | A) | file types |
| | B) | data structures |
| | C) | transmission modes |
| | D) | none of the choices are correct |
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10 | |
In FTP, ASCII, EBCDIC, and image define an attribute called _______. |
| | A) | file type |
| | B) | data structure |
| | C) | transmission mode |
| | D) | none of the choices are correct |
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11 | |
In FTP, which category of commands is used to store and retrieve files? |
| | A) | file transfer commands |
| | B) | access commands |
| | C) | file management commands |
| | D) | none of the choices are correct |
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12 | |
In FTP, which category of commands defines the port number for the data connection on the client site? |
| | A) | file transfer commands |
| | B) | access commands |
| | C) | port defining commands |
| | D) | none of the choices are correct |
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13 | |
In FTP, which category of commands sets the attributes (file type, data structure, and transmission modes) of a file to be transferred? |
| | A) | file transfer commands |
| | B) | access commands |
| | C) | data formatting commands |
| | D) | none of the choices are correct |
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14 | |
In FTP, which category of commands lets a user switch directories and create or delete directories? |
| | A) | file transfer commands |
| | B) | access commands |
| | C) | file management commands |
| | D) | none of the choices are correct |
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15 | |
In FTP, when we _______, it is copied from the client to the server. |
| | A) | retrieve a file |
| | B) | store a file |
| | C) | open a file |
| | D) | none of the choices are correct |
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16 | |
TFTP uses the services of ________. |
| | A) | TCP |
| | B) | UDP |
| | C) | IP |
| | D) | none of the choices are correct |
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17 | |
In TFTP, what type of message is sent in response to an RRQ that fails to establish a connection? |
| | A) | WRQ |
| | B) | DATA |
| | C) | ERROR |
| | D) | none of the choices are correct |
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18 | |
In TFTP, what type of message is sent to establish a connection to retrieve a file? |
| | A) | RRQ |
| | B) | WRQ |
| | C) | DATA |
| | D) | none of the choices are correct |
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19 | |
In TFTP, which type of message is always a set number of bytes? |
| | A) | RRQ |
| | B) | WRQ |
| | C) | ACK |
| | D) | none of the choices are correct |
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20 | |
In TFTP, a connection is terminated with a _______ block. |
| | A) | DATA |
| | B) | ACK |
| | C) | ERROR |
| | D) | none of the choices are correct |
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21 | |
An unauthorized user tries to send a file to a server using TFTP. What should be the response of the server? |
| | A) | ACK |
| | B) | ERROR |
| | C) | DATA |
| | D) | none of the choices are correct |
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22 | |
In TFTP, the block number on a DATA message is 22. This always means _______. |
| | A) | there were 21 previous blocks |
| | B) | there were 20 previous blocks |
| | C) | this is the last block |
| | D) | none of the choices are correct |
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23 | |
In TFTP, connection termination is signaled by a DATA message with _______ bytes. |
| | A) | any positive number of |
| | B) | 512 |
| | C) | 0 to 511 |
| | D) | all of the above |
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24 | |
The flow-control mechanism in TFTP _______. |
| | A) | requires an ACK for every DATA message |
| | B) | is called sliding window |
| | C) | is nonexistent |
| | D) | none of the choices are correct |
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25 | |
In TFTP, if a duplicate DATA message is received, _______. |
| | A) | the sender sends an error message |
| | B) | the connection is terminated |
| | C) | the receiver discards the duplicate |
| | D) | none of the choices are correct |
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