Understanding Network Performance Factors

Which of the following best describes 'bandwidth' in a computer network?

• The time it takes for a packet to travel from source to destination

• The maximum rate of data transfer across a given path

• The number of devices connected to a network

• The amount of data lost during transmission

What is 'latency' in the context of network performance?

• The number of users on a network

• The delay between sending and receiving data

• The total bandwidth available

• The amount of data that can be stored

Which of the following is a common failure mode in network protocols?

• Packet loss

• Increased bandwidth

• Reduced latency

• Higher throughput

Which protocol is primarily responsible for error detection in data transmission?

• HTTP

• TCP

• FTP

• SMTP

What is the main purpose of a checksum in network communication?

• To increase bandwidth

• To detect errors in transmitted data

• To reduce latency

• To encrypt data

Which technique allows a receiver to request the retransmission of lost or corrupted packets?

• Forward error correction

• Automatic Repeat reQuest (ARQ)

• Multiplexing

• Load balancing

Which of the following is NOT a method of error detection?

• Parity check

• Cyclic Redundancy Check (CRC)

• Checksum

• Data compression

What is the main function of flow control in TCP/IP networks?

• To prevent packet loss due to congestion

• To ensure data is delivered in order

• To match the sender’s data rate to the receiver’s capacity

• To encrypt data

Which TCP mechanism helps to avoid network congestion?

• Sliding window

• Congestion control

• DNS resolution

• NAT translation

What does the 'timeout' mechanism in TCP do?

• It increases the bandwidth

• It triggers retransmission if an acknowledgement is not received in time

• It compresses data

• It encrypts packets