TCP/IP · Transport interview questions

1. A.acknowledging non-contiguous received segments to improve retransmission efficiency
2. B.the period a closing socket waits to ensure delayed segments are handled before reuse
3. C.the SYN, SYN-ACK, ACK exchange that establishes a TCP connection
4. D.the field that orders bytes in a TCP stream for reliable reassembly

Answer + AI explanation with Pro

1. A.TCP congestion control
2. B.TCP three-way handshake
3. C.TCP selective acknowledgment (SACK)
4. D.Acknowledgment number

Answer + AI explanation with Pro

1. A.TCP three-way handshake — the SYN, SYN-ACK, ACK exchange that establishes a TCP connection
2. B.TCP three-way handshake — a 16-bit identifier distinguishing application endpoints on a host
3. C.TCP three-way handshake — a connection-oriented transport protocol providing reliable, ordered byte delivery
4. D.TCP three-way handshake — coalescing small TCP writes to reduce the number of tiny packets on the wire

Answer + AI explanation with Pro

1. A.a connection-oriented transport protocol providing reliable, ordered byte delivery
2. B.a 16-bit identifier distinguishing application endpoints on a host
3. C.the FIN/ACK exchange that gracefully closes a TCP connection in both directions
4. D.a flow-control mechanism limiting unacknowledged data in flight

Answer + AI explanation with Pro

1. A.Head-of-line blocking
2. B.TCP
3. C.Port number
4. D.TCP selective acknowledgment (SACK)

Answer + AI explanation with Pro

1. A.TCP — periodic probes that detect whether an idle connection is still alive
2. B.TCP — the period a closing socket waits to ensure delayed segments are handled before reuse
3. C.TCP — a connection-oriented transport protocol providing reliable, ordered byte delivery
4. D.TCP — the field indicating the next byte a TCP receiver expects

Answer + AI explanation with Pro

1. A.a connectionless transport protocol offering low-overhead, best-effort delivery
2. B.a 16-bit identifier distinguishing application endpoints on a host
3. C.an option that allows receive windows larger than 64 KB for high-bandwidth links
4. D.the field that orders bytes in a TCP stream for reliable reassembly

Answer + AI explanation with Pro

1. A.Sequence number
2. B.UDP
3. C.TCP keepalive
4. D.Socket

Answer + AI explanation with Pro

1. A.UDP — a 16-bit identifier distinguishing application endpoints on a host
2. B.UDP — the largest payload a TCP segment can carry, derived from the path MTU
3. C.UDP — the period a closing socket waits to ensure delayed segments are handled before reuse
4. D.UDP — a connectionless transport protocol offering low-overhead, best-effort delivery

Answer + AI explanation with Pro

1. A.the largest payload a TCP segment can carry, derived from the path MTU
2. B.acknowledging non-contiguous received segments to improve retransmission efficiency
3. C.an option that allows receive windows larger than 64 KB for high-bandwidth links
4. D.a 16-bit identifier distinguishing application endpoints on a host

Answer + AI explanation with Pro

1. A.TCP three-way handshake
2. B.Port number
3. C.TCP retransmission
4. D.TCP window scaling

Answer + AI explanation with Pro

1. A.Port number — a 16-bit identifier distinguishing application endpoints on a host
2. B.Port number — a connection-oriented transport protocol providing reliable, ordered byte delivery
3. C.Port number — acknowledging non-contiguous received segments to improve retransmission efficiency
4. D.Port number — resending segments that were not acknowledged within the timeout

Answer + AI explanation with Pro

1. A.an option that allows receive windows larger than 64 KB for high-bandwidth links
2. B.resending segments that were not acknowledged within the timeout
3. C.the period a closing socket waits to ensure delayed segments are handled before reuse
4. D.the combination of an IP address and port that identifies a connection endpoint

Answer + AI explanation with Pro

1. A.Port number
2. B.TCP retransmission
3. C.Socket
4. D.TCP

Answer + AI explanation with Pro

1. A.Socket — a flow-control mechanism limiting unacknowledged data in flight
2. B.Socket — periodic probes that detect whether an idle connection is still alive
3. C.Socket — the FIN/ACK exchange that gracefully closes a TCP connection in both directions
4. D.Socket — the combination of an IP address and port that identifies a connection endpoint

Answer + AI explanation with Pro

1. A.a flow-control mechanism limiting unacknowledged data in flight
2. B.the field that orders bytes in a TCP stream for reliable reassembly
3. C.an option that allows receive windows larger than 64 KB for high-bandwidth links
4. D.a connectionless transport protocol offering low-overhead, best-effort delivery

Answer + AI explanation with Pro

1. A.Port number
2. B.TCP sliding window
3. C.Head-of-line blocking
4. D.TCP three-way handshake

Answer + AI explanation with Pro

1. A.TCP sliding window — resending segments that were not acknowledged within the timeout
2. B.TCP sliding window — a flow-control mechanism limiting unacknowledged data in flight
3. C.TCP sliding window — acknowledging non-contiguous received segments to improve retransmission efficiency
4. D.TCP sliding window — algorithms like slow start and congestion avoidance that adapt send rate to network capacity

Answer + AI explanation with Pro

1. A.the SYN, SYN-ACK, ACK exchange that establishes a TCP connection
2. B.the FIN/ACK exchange that gracefully closes a TCP connection in both directions
3. C.the field indicating the next byte a TCP receiver expects
4. D.an option that allows receive windows larger than 64 KB for high-bandwidth links

Answer + AI explanation with Pro

1. A.TCP four-way termination
2. B.TCP TIME_WAIT state
3. C.TCP
4. D.TCP retransmission

Answer + AI explanation with Pro

1. A.TCP four-way termination — a 16-bit identifier distinguishing application endpoints on a host
2. B.TCP four-way termination — the FIN/ACK exchange that gracefully closes a TCP connection in both directions
3. C.TCP four-way termination — the field indicating the next byte a TCP receiver expects
4. D.TCP four-way termination — coalescing small TCP writes to reduce the number of tiny packets on the wire

Answer + AI explanation with Pro

1. A.the SYN, SYN-ACK, ACK exchange that establishes a TCP connection
2. B.the field that orders bytes in a TCP stream for reliable reassembly
3. C.resending segments that were not acknowledged within the timeout
4. D.the FIN/ACK exchange that gracefully closes a TCP connection in both directions

Answer + AI explanation with Pro

1. A.TCP retransmission
2. B.TCP three-way handshake
3. C.TCP sliding window
4. D.Socket

Answer + AI explanation with Pro

1. A.TCP retransmission — a connectionless transport protocol offering low-overhead, best-effort delivery
2. B.TCP retransmission — the field that orders bytes in a TCP stream for reliable reassembly
3. C.TCP retransmission — resending segments that were not acknowledged within the timeout
4. D.TCP retransmission — the field indicating the next byte a TCP receiver expects

Answer + AI explanation with Pro

1. A.the largest payload a TCP segment can carry, derived from the path MTU
2. B.the period a closing socket waits to ensure delayed segments are handled before reuse
3. C.a 16-bit identifier distinguishing application endpoints on a host
4. D.a connectionless transport protocol offering low-overhead, best-effort delivery

Answer + AI explanation with Pro

1. A.TCP sliding window
2. B.TCP TIME_WAIT state
3. C.TCP four-way termination
4. D.TCP selective acknowledgment (SACK)

Answer + AI explanation with Pro

1. A.TCP TIME_WAIT state — the FIN/ACK exchange that gracefully closes a TCP connection in both directions
2. B.TCP TIME_WAIT state — a connection-oriented transport protocol providing reliable, ordered byte delivery
3. C.TCP TIME_WAIT state — an option that allows receive windows larger than 64 KB for high-bandwidth links
4. D.TCP TIME_WAIT state — the period a closing socket waits to ensure delayed segments are handled before reuse

Answer + AI explanation with Pro

1. A.the period a closing socket waits to ensure delayed segments are handled before reuse
2. B.acknowledging non-contiguous received segments to improve retransmission efficiency
3. C.a flow-control mechanism limiting unacknowledged data in flight
4. D.algorithms like slow start and congestion avoidance that adapt send rate to network capacity

Answer + AI explanation with Pro

1. A.Socket
2. B.TCP keepalive
3. C.TCP congestion control
4. D.UDP

Answer + AI explanation with Pro

1. A.TCP congestion control — algorithms like slow start and congestion avoidance that adapt send rate to network capacity
2. B.TCP congestion control — the field indicating the next byte a TCP receiver expects
3. C.TCP congestion control — resending segments that were not acknowledged within the timeout
4. D.TCP congestion control — the FIN/ACK exchange that gracefully closes a TCP connection in both directions

Answer + AI explanation with Pro