Computer Networks Subcategories

Basics	Network Layer
Freshers	Ripv1
Http	Application Layer
Cookie	Internet
Entrance Exams	Analyzing Subnet Mask
Ipv4 Ipv6 Comparison	Ipv4
Experienced	Dv Routing Algorithms
Http Ftp	Port
Campus Interviews	Computer Networks
Frame Relay 2	Atm Frame Relay
Network Topology Set 2	Snmp Operations
Snmp	Topology
Mac Address	Reliable Data Transfer
Acl	Mail Access Protocols
Routers Functionalities Basics	Ls Routing Algorithms
Cidr	Vlan
Bgp	Broadcast Routing
Hierarchical Routing	Switches Hubs
Error Detection Correction Techniques	Multiple Access Links Protocols
Symmetric Key Cryptography	Public Key Cryptography
Hash Functions	Digital Signatures
Cisco Lan Switches	Ipv6
Smtp	Access Networks
Mcqs	Sonet
Ftp	Aptitude Test
Physical Layer	Telnet
Web Caching	Network Security Encryption
Quiz	Online Quiz
Online Test	Ipsecurity
Security	Ospf
Firewall	Ethernet
Wireless Lan	Network Utilities
Bluetooth	Wimax
Rtp	Rpc
Eigrp 2	Reference Models
Data Link Layer	Transport Layer
Multiplexing	Packet Circuit Switching
Delays Loss	Network Attacks
Tcp	Udp
Virtual Circuit	Congestion Control
Test	World Wide Web
Icmp	Cryptography
Ip Routing 2	Physical Media
Dns	Dhcp
Ssh	Internetworking

The entire hostname has a maximum of ___________

A. 255 characters
B. 127 characters
C. 63 characters
D. 31 characters

Explanation: An entire hostname can have a maximum of 255 characters. Although each label must be from 1 to 63 characters long. Host name is actually a label that is given to a device in a network.

A DNS client is called _________

A. DNS updater
B. DNS resolver
C. DNS handler
D. None of the mentioned

Explanation: DNS client also known as DNS resolver also known as DNS lookup helps to resolve DNS requests using an external DNS server.

Servers handle requests for other domains _______

A. Directly
B. By contacting remote DNS server
C. It is not possible
D. None of the mentioned

Explanation: Whenever a request is received at server from other domains, it handles this situation by contacting remote DNS server.

DNS database contains _______

A. Name server records
B. Hostname-to-address records
C. Hostname aliases
D. All of the mentioned

Explanation: Domain Name system not only deals with mapping IP addresses with the hostname but also deals with exchange of information in the server.

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 the mentioned

Explanation: Root name servers are actually very important and critical as they are the first step in translating human readable hostnames into IP addresses for carrying out communication.

Which one of the following allows client to update their DNS entry as their IP address change?

A. Dynamic DNS
B. Mail transfer agent
C. Authoritative name server
D. None of the mentioned

Explanation: Dynamic DNS or in short DDNS or DynDNS helps in automatically updating a name server in the DNS. This does not require manual editing.

Wildcard domain names start with label _______

A. @
B. *
C. &
D. #

Explanation: A wildcard DNS record matches requests to a non existent domain name. This wildcard DNS record is specified by using asterisk “*” as the starting of a domain name.

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

Explanation: The ICANN (Internet Corporation for Assigned Names and Numbers) deals with IP address space allocation, protocol identifier assignment, generic and country code Top Level domain name system management (gTLD and ccTLD).

The domain name system is maintained by _______

A. Distributed database system
B. A single server
C. A single computer
D. None of the mentioned

Explanation: A domain name system is maintained by a distributed database system. It is a collection of multiple, logically interrelated databases distributed over a computer network.