BCS Computer Networks

Question 1

Which layer of the OSI model is responsible for end-to-end communication and error recovery?

Accepted Answer

Transport layer

Answer

The Transport layer (Layer 4) is responsible for end-to-end communication, error recovery, and flow control between hosts.

Question 2

What does the acronym TCP stand for?

Accepted Answer

Transmission Control Protocol

Answer

TCP stands for Transmission Control Protocol, providing reliable, ordered, and error-checked data delivery.

Question 3

Which IP address class supports the largest number of hosts per network?

Accepted Answer

Class A

Answer

Class A addresses use only 8 bits for the network portion, leaving 24 bits for hosts, supporting over 16 million hosts per network.

Question 4

What is the primary purpose of the Domain Name System (DNS)?

Accepted Answer

Translate domain names to IP addresses

Answer

DNS translates human-readable domain names (e.g., www.example.com) into their corresponding IP addresses.

Question 5

Which protocol is used to automatically assign IP addresses to devices on a network?

Accepted Answer

DHCP

Answer

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, and default gateways to devices.

BCS - Bachelor Of Computer Science Degree Practice Test