Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
What is the difference in data transmission delivery and reliability (CCNA 200-301)
What is the difference in data transmission delivery and reliability between TCP and UDP?
A. TCP transmits data at a higher rate and ensures packet delivery. UDP retransmits lost data to ensure applications receive the data on the remote end.
B. TCP requires the connection to be established before transmitting data. UDP transmits data at a higher rate without ensuring packet delivery.
C. UDP sets up a connection between both devices before transmitting data. TCP uses the three-way handshake to transmit data with a reliable connection.
D. UDP is used for multicast and broadcast communication. TCP is used for unicast communication and transmits data at a higher rate with error checking.
Solution
Correct answer: B. TCP requires the connection to be established before transmitting data. UDP transmits data at a higher rate without ensuring packet delivery.
The key differences between TCP and UDP in terms of data transmission delivery and reliability are:
Connection establishment:
TCP requires a connection to be established between the client and server before data can be transmitted (using the three-way handshake).
UDP is a connectionless protocol and does not require a connection to be established before transmitting data.
Reliability:
TCP is a reliable protocol that ensures data delivery. It retransmits lost or corrupted packets to guarantee that the data is received correctly.
UDP is an unreliable protocol and does not guarantee data delivery. Packets may be lost or corrupted during transmission, and there is no retransmission mechanism.
Transmission rate:
UDP generally has a higher data transmission rate compared to TCP because it does not have the overhead of connection establishment and reliability mechanisms.
TCP has a lower data transmission rate due to the overhead of connection establishment and reliability mechanisms.
Therefore, the correct answer is B, which accurately describes the differences in data transmission delivery and reliability between TCP and UDP.
Category: Network Fundamentals