200-301 Question #257: Real Exam Question with Answer & Explanation

Question

What are two benefits that the UDP protocol provide for application traffic?(Choose two)

Options

• AUDP traffic has lower overhead than TCP traffic
• BUDP provides a built-in recovery mechanism to retransmit lost packets.
• CThe CTL field in the UDP packet header enables a three-way handshake to establish the
• DUDP maintains the connection state to provide more stable connections than TCP.
• EThe application can use checksums to verify the integrity of application data

Explanation

UDP offers lower overhead than TCP due to its connectionless nature, and it allows applications to use checksums for data integrity verification.

Common mistakes.

• B. UDP is a connectionless protocol and does not provide any built-in mechanisms for retransmission or recovery of lost packets; this functionality must be handled by the application layer.
• C. UDP headers do not contain a CTL field, and UDP does not perform a three-way handshake to establish a connection, as it is a connectionless protocol.
• D. UDP does not maintain connection state; it is a connectionless protocol, meaning each packet is treated independently without prior setup or teardown, thus not providing connection stability like TCP.

Concept tested. UDP characteristics and benefits

Reference. https://learn.microsoft.com/en-us/windows/win32/winsock/protocol-and-socket-concepts#udp-protocol

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