DNS - Computer Networks Questions and Answers
1.
The entire hostname has a maximum of
A.)
255 characters
B.)
127 characters
C.)
63 characters
D.)
31 characters
Answer: Option 'A'
255 characters
2.
Which one of the following is not true?
A.)
multiple hostnames may correspond to a single IP address
B.)
a single hostname may correspond to many IP addresses
C.)
a single hostname may correspond to a single IP address
D.)
none of these
Answer: Option 'C'
a single hostname may correspond to a single IP address
3.
A DNS client is called
A.)
DNS updater
B.)
DNS handler
C.)
DNS resolver
D.)
none of these
Answer: Option 'C'
DNS resolver
4.
The domain name system is maintained by
A.)
distributed database system
B.)
a single server
C.)
a single computer
D.)
none of these
Answer: Option 'A'
distributed database system
5.
Servers handle requests for other domains
A.)
directly
B.)
by contacting remote DNS server
C.)
it is not possible
D.)
none of these
Answer: Option 'B'
by contacting remote DNS server
6.
The right to use a domain name is delegated by domain name registers which are accredited by
A.)
internet architecture board
B.)
internet society
C.)
internet research task force
D.)
internet corporation for assigned names and numbers
Answer: Option 'D'
internet corporation for assigned names and numbers
7.
DNS database contains
A.)
name server records
B.)
hostname-to-address records
C.)
hostname aliases
D.)
all of these
Answer: Option 'D'
all of these
8.
Wildcard domain names start with label
A.)
@
B.)
*
C.)
&
D.)
#
Answer: Option 'B'
*
9.
If a server has no clue about where to find the address for a hostname then
A.)
server asks to the root server
B.)
server asks to its adjcent server
C.)
request is not processed
D.)
none of these
Answer: Option 'A'
server asks to the root server
- Basics Computer Networks Question and Answers
- Reference Models
- Physical Layer
- Data Link Layer
- Network Layer
- Transport Layer
- Application Layer
- DNS
- Telnet
- World Wide Web
- HTTP and FTP
- Ethernet
- Wireless LAN
- WiMAX
- Bluetooth
- ATM Frame Relay
- Access Networks
- Physical Media
- Multiplexing
- Topology
- Packet Switching & Circuit Switching
- SONET
- Internet
- Cryptography
- Security In The Internet
- Delays and Loss
- Network Attacks
- DHCP
- SMTP
- FTP
10.
Which one of the following allows client to update their DNS entry as their IP address change?
A.)
mail transfer agent
B.)
dynamic DNS
C.)
authoritative name server
D.)
none of these
Answer: Option 'B'
dynamic DNS
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