Computer Networking mcq

Question: The ‘com’ name servers authoritatively know(s) the name to IP address mapping of all domain names ending in “.com” such as www.yahoo.com, news.google.com:

Answer Choices:
No single name server
The ‘edu’ name server
The root name servers
The ‘com’ name servers

Answer: The ‘com’ name servers

Question: A web server would be allocated an IP address using:

Answer Choices:
Manual DHCP allocation
None of the above
Dynamic DHCP allocation
Automatic DHCP allocation

Answer: Manual DHCP allocation

Question: Search advertising is:

Answer Choices:
Advertising search engines on the Internet
The placement of advertisements near web search results
Allowing users to search for coupons on the Internet
Searching for advertisements on the Internet

Answer: The placement of advertisements near web search results

Question: The ability of TCP to serve multiple applications simultaneously is called:

Answer Choices:
Multiplexing
Reliability
Connection establishment
Flow control
Segmentation

Answer: Multiplexing

Question: The mechanism used for flow control in TCP is:

Answer Choices:
CSMA/CD
Stop and wait
Three-way handshake

Answer: Three-way handshake

Question: Using CIDR, and organization that needs 2,000 IP addresses is best served by a:

Answer Choices:
/22 address block
/24 address block
/21 address block
/20 address block

Answer: /21 address block

Question: HTTP is an application layer protocol that enables the transfer of:

Answer Choices:
Only text files and images between computers
Only text files between computers
Pairs of files between computers
Files of any type between computers

Answer: Files of any type between computers

Question: SMTP is based on a ____ model of communication.

Answer Choices:
Broadcast
Pull
Anycast
Push

Answer: Push

Question: Clients locate the DHCP server on their network because:

Answer Choices:
The DHCP DISCOVER message sent by the computer is broadcast on the network.
The IP address of the DHCP server is typically programmed into the computer.
Any computer on the network can act as a DHCP server.
The client can act as its own DHCP server.

Answer: The DHCP DISCOVER message sent by the computer is broadcast on the network.

Question: DNS is used to:

Answer Choices:
Automate the allocation of IP addresses
Enable IP address reuse
Translate hostnames to IP addresses
Define non-routable IP addresses

Answer: Translate hostnames to IP addresses

Question: IMAP and POP are used to:

Answer Choices:
Manipulate the contents of the mailbox
Access web pages
Serve web pages
Deliver email to the destination mail server

Answer: Deliver email to the destination mail server