Identify the primary function of a computer network.

• Performing calculations faster

• Storing large amounts of data

• Sharing resources and communication

• Creating web applications

Which of the following is an example of a network application?

• Microsoft Excel

• Adobe Photoshop

• Google Drive

• Disk Defragmenter

Which device operates at the network layer and is used to connect different networks?

• Switch

• Hub

• Repeater

• Router

In a star topology, failure of which device leads to network failure?

• Any end device

• The central switch or hub

• Any cable

• Network interface card

Which of the following defines a set of rules for data communication?

• Bandwidth

• Topology

• Protocol

• IP address

TCP/IP model's transport layer provides which of the following protocols?

• TCP and UDP

• FTP and HTTP

• IP and ARP

• SMTP and DHCP

In the OSI model, communication between adjacent layers happens using:

• Packets

• Services

• Protocols

• Interfaces

Which of the following layers deals with transmission of raw bits over a communication channel?

• Transport

• Physical

• Data Link

• Network

The electromagnetic spectrum is divided based on:

• Voltage levels
  

• Frequency ranges

• Data speed

• Signal amplitude

Twisted pair cables are twisted to

• Reduce weight
  

• Enhance strength

• Reduce electromagnetic interference

• Increase bandwidth