COMPUTER NETWORK QUESTIONS-05

In a _______ name space, a name is a sequence of characters without structure.

This is the correct answer.
A) flat


B) hierarchical


C) organized


D) None of the choices are correct




In a _________name space, each name is made of several parts.


A) flat

This is the correct answer.
B) hierarchical


C) organized


D) None of the choices are correct




In the DNS, the names are defined in ___________ structure.


A) a linear list

This is the correct answer.
B) an inverted-tree


C) a graph


D) None of the choices are correct




Each node in the tree has a _______, which is a string with a maximum of ___ characters.


A) label; 127


B) name; 255

This is the correct answer.
C) label; 63


D) None of the choices are correct




The root of the DNS tree is _______.


A) a string of characters


B) a string of 63 characters

This is the correct answer.
C) an empty string


D) None of the choices are correct




A full domain name is a sequence of labels separated by ________.


A) semicolons

This is the correct answer.
B) dots


C) colons


D) None of the choices are correct




If a label is terminated by a null string, it is called a __________.


A) PQDN

This is the correct answer.
B) FQDN


C) SQDN


D) None of the choices are correct



If a label is not terminated by a null string, it is called a __________.

This is the correct answer.
A) PQDN


B) FQDN


C) SQDN


D) None of the choices are correct




A _________ is a subtree of the domain name space.


A) label


B) name

This is the correct answer.
C) domain


D) None of the choices are correct




What a server is responsible for or has authority over is called a _________.


A) domain


B) label

This is the correct answer.
C) zone


D) None of the choices are correct



A _______ is a server whose zone consists of the whole tree.


A) domain server


B) zone server

This is the correct answer.
C) root server


D) None of the choices are correct




A ________ server loads all information from the disk file.

This is the correct answer.
A) primary


B) secondary


C) zone


D) None of the choices are correct




A ________ server loads all information from the primary server.


A) primary

This is the correct answer.
B) secondary


C) zone


D) None of the choices are correct




When the secondary downloads information from the primary, it is called ______ transfer.


A) domain

This is the correct answer.
B) zone


C) label


D) None of the choices are correct



In the Internet, the domain name space (tree) is divided into _______ different sections:

This is the correct answer.
A) three


B) two


C) four


D) None of the choices are correct



The _______ domains define registered hosts according to their generic behavior.

This is the correct answer.
A) generic


B) country


C) inverse


D) None of the choices are correct




The first level in the generic domains section allows ______ possible labels.


A) 10


B) 12


C) 16

This is the correct answer.
D) None of the choices are correct




The ____________ domain section uses two-character country abbreviations.


A) generic

This is the correct answer.
B) country


C) inverse


D) None of the choices are correct




The _________ domain is used to map an address to a name.


A) generic


B) country

This is the correct answer.
C) inverse


D) None of the choices are correct




In __________ resolution, the resolver expects the server to supply the final answer.


A) iterative

This is the correct answer.
B) recursive


C) straight


D) None of the choices are correct




In __________ resolution, the server returns the IP address of the server that it thinks can resolve the query.

This is the correct answer.
A) iterative


B) recursive


C) straight


D) None of the choices are correct




A pointer query involves the _______ domain.

This is the correct answer.
A) inverse


B) reverse


C) root


D) None of the choices are correct




DNS can use the services of ________ using the well-known port 53.


A) UDP


B) TCP

This is the correct answer.
C) either UDP or TCP


D) None of the choices are correct




TELNET is an abbreviation for ____________.

This is the correct answer.
A) terminal network


B) telephone network


C) telecommunication network


D) None of the choices are correct


When a user logs into a local time-sharing system, it is called ________ login.

This is the correct answer.
A) local


B) remote


C) temporary


D) None of the choices are correct




When a user wants to access an application program or utility located on a remote machine, he or she performs ___________ login.


A) local

This is the correct answer.
B) remote


C) temporary


D) None of the choices are correct




NVT uses two sets of characters, one for _____and one for __________.


A) sending; receiving


B) request; reply

This is the correct answer.
C) data; control


D) None of the choices are correct




For data, NVT uses US ASCII characters with the highest order bit set to ______.


A) 1

This is the correct answer.
B) 0


C) 1 or 0


D) None of the choices are correct



For control, NVT uses US ASCII characters with the highest order bit set to ______.

This is the correct answer.
A) 1


B) 0


C) 1 or 0


D) None of the choices are correct




TELNET uses only one TCP connection. The server uses ________ port and the client uses ________ port.


A) a well-known; another well-known


B) an ephemeral; another ephemeral

This is the correct answer.
C) a well-known; an ephemeral


D) None of the choices are correct




To distinguish data from control characters, each sequence of control characters is preceded by a special control character called ________.


A) ICA

This is the correct answer.
B) IAC


C) AIC


D) None of the choices are correct




In the _______ mode, the echoing is done by the client.

This is the correct answer.
A) default


B) character


C) line


D) None of the choices are correct




In the _______ mode, each character typed is sent by the client to the server.


A) default

This is the correct answer.
B) character


C) line


D) None of the choices are correct




In the ____ mode, line editing (echoing, character erasing, line erasing, and so on) is done by the client.


A) default


B) character

This is the correct answer.
C) line


D) None of the choices are correct




The _______ is software residing on the remote system that allows the remote system to receive characters from a TELNET server.


A) terminal driver

This is the correct answer.
B) pseudoterminal driver


C) TELNET client


D) None of the choices are correct




The _______ translates local characters into NVT form.


A) terminal driver

This is the correct answer.
B) TELNET client


C) TELNET server


D) None of the choices are correct




The _______ translates NVT characters into a form acceptable by the remote operating system.


A) terminal driver


B) TELNET client

This is the correct answer.
C) TELNET server


D) None of the choices are correct




If the sender wants to disable an option, it sends a _______ command.


A) WILL


B) DO

This is the correct answer.
C) WONT


D) None of the choices are correct




If the sender wants to enable an option, it sends a _______ command.

This is the correct answer.
A) WILL


B) DO


C) WONT


D) None of the choices are correct



If the sender wants an option disabled by the receiver, it sends a _______ command.


A) WILL


B) DO

This is the correct answer.
C) DONT


D) None of the choices are correct




If the sender wants an option enabled by the receiver, it sends a _______ command.


A) WILL

This is the correct answer.
B) DO


C) WONT


D) None of the choices are correct



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