Information Technology Quiz

What is the main function of a computer network?

• To play games

• To communicate and share resources

• To watch movies

• To listen to music

Which of the following is NOT a network application?

• Online buying

• Mail

• Playing video games

• Chat

What are the components of a computer network?

• Two or more computers, cables, switches, software

• One computer, printer, modem, fax machine

• Mobile phone, tablet, smartwatch, TV

• Keyboard, mouse, monitor, CPU

What is a disadvantage of networks?

• Failure of server

• No cable faults

• No time for administration

• Low cost of installation

What is the difference between simplex and full-duplex communication?

• Both devices can send data at a time in full-duplex, only one node can send data in simplex

• One node can send data in simplex, both devices can send data at a time in full-duplex

• Both devices can send data at a time in simplex, both devices can send data at a time in full-duplex

What are the characteristics of point-to-point connections?

• High latency rate, complex connection, high cost

• Low bandwidth, difficult replacement of node, slow connection speed

• Low cost, high latency rate, complex connection

• High bandwidth, easy replacement of node, fast connection speed

What is the purpose of multicast transmission?

• Sending messages to a single node

• Transmitting messages to multiple devices simultaneously

• Transmitting messages to a group of devices sequentially

• Sending messages to all devices in the network

What is the advantage of a star topology?

• Any fault in the central controller will drop down the entire network

• Less expensive than mesh topology

• Difficult installation and reconfiguration

• Allows direct traffic between devices

What is the main difference between a hub and a switch?

• Hubs operate at the physical layer, switches operate at the data link layer and the physical layer

• Hubs have multiple collision domains, switches have a single collision domain

• Hubs have higher latency than switches

• Switches are used for wireless connections, hubs are used for wired connections

What is the purpose of a firewall in a network?

• To block unauthorized access and control incoming/outgoing network traffic

• To increase network speed

• To connect different network segments

• To manage software updates