Networking Protocols Quiz

Which protocol has no flow control and no error control?

• Stop-and-Wait Protocol

• Simplest Protocol

• Stop-and-Wait ARQ Protocol

• Sliding Window Protocol

In Stop-and-Wait protocol, the sender can send the next frame only after:

• Receiving an acknowledgment

• Receiving a negative acknowledgment

• Timer expiration

• Sending two frames

Which mechanism is added to Stop-and-Wait Protocol to form Stop-and-Wait ARQ?

• Piggybacking

• Error detection and retransmission

• Multiplexing

• Character stuffing

What is the main role of a timer in Stop-and-Wait ARQ?

• Count ACKs

• Measure bandwidth

• Detect lost/unacknowledged frames

• Synchronize sender and receiver clocks

Flow control ensures that:

• Frames are delivered without errors

• Slow receivers are not swamped by fast senders

• Packets are always acknowledged

• Frames are numbered correctly

In Stop-and-Wait ARQ, how many sequence numbers are required?

• 1

• 2

• 4

• Equal to window size

Which of the following is a flow control method?

• Stop-and-Wait

• Character stuffing

• Parity check

• ARQ

In Stop-and-Wait ARQ, what happens if an acknowledgment is lost?

• Frame is ignored

• Frame is retransmitted after timer expires

• Protocol stops working

• Receiver sends a negative acknowledgment immediately

Which protocol is suitable for a noiseless, unidirectional channel?

• Simplest Protocol

• Stop-and-Wait Protocol

• Stop-and-Wait ARQ

• Selective Repeat

In error control, retransmission of lost or corrupted frames is known as:

• Piggybacking

• ARQ (Automatic Repeat Request)

• Sliding window

• Flow-based recovery