Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
What are two benefits that the UDP protocol provide for application (CCNA 200-301)
What are two benefits that the UDP protocol provide for application traffic?
(Choose two)
A) UDP traffic has lower overhead than TCP traffic.
B) UDP provides a built-in recovery mechanism to retransmit lost packets.
C) The CTL field in the UDP packet header enables a three-way handshake to establish the connection.
D) UDP maintains the connection state to provide more stable connections than TCP.
E) The application can use checksums to verify the integrity of application data.
Solution
Correct answer: A) UDP traffic has lower overhead than TCP traffic and E) The application can use checksums to verify the integrity of application data.
A - UDP minimizes overhead by forgoing connection setup and acknowledgment processes. It simply sends data packets (datagrams) without waiting for confirmation. This reduces latency and improves efficiency for applications that prioritize speed over guaranteed delivery.
E - UDP includes a checksum field in its header, but it doesn't guarantee delivery or retransmission. Applications can leverage this checksum to detect errors in the received data. If corrupted data is found, the application can handle it appropriately, such as requesting retransmission (if the application layer protocol supports it) or gracefully handling the missing information.
Let's break down the other options for clarity:
B. UDP does not provide built-in retransmission. Lost packets are simply not resent, making it suitable for applications that can tolerate some data loss (e.g., real-time streaming).
C. UDP doesn't have a CTL field or perform three-way handshakes. Connection setup is absent in UDP.
D. UDP doesn't maintain connection state. It's a connectionless protocol, meaning each datagram is treated independently.
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