A Level: Packet Switching and Routers

What is the primary purpose of packet switching in a network?

• To establish a dedicated communication path

• To divide data into packets for efficient transmission

• To encrypt data for security

• To increase the bandwidth of the network

Which of the following is a key advantage of packet switching over circuit switching?

• Lower latency

• Guaranteed bandwidth

• More efficient use of network resources

• Simpler network design

What role does a router play in a packet-switched network?

• It encrypts data packets

• It directs data packets to their destination

• It compresses data packets

• It converts data packets into analogue signals

Which of the following is NOT a function of a router?

• Forwarding data packets

• Filtering traffic based on IP addresses

• Assigning IP addresses to devices

• Managing network congestion

What is packet loss in a network?

• The delay in packet delivery

• The failure of one or more transmitted packets to arrive at their destination

• The duplication of packets in the network

• The encryption of packets for security

Which factor can contribute to packet delay in a network?

• High bandwidth

• Network congestion

• Low latency

• Strong signal strength

How does a router determine the best path for a packet?

• By using a fixed path for all packets

• By analysing the packet's content

• By consulting a routing table

• By encrypting the packet

What is the impact of packet loss on data transmission?

• It increases the speed of data transmission

• It causes data to be delivered out of order

• It results in incomplete data being received

• It has no impact on data transmission

Which protocol is commonly used to detect and correct packet loss?

• HTTP

• FTP

• TCP

• UDP

What is the main cause of packet delay in a network?

• High signal strength

• Network congestion

• Low bandwidth

• High latency