Exam H12-811_V2.0 Topic 4 Question 3 Discussion

Actual exam question for Huawei's H12-811_V2.0 exam
Question #: 3
Topic #: 4

In the figure, a web client sends an HTTP request to a web server, and the router in between performs operations on the HTTP request. Which of the following statements are false about the router's operations?
(Select all that apply)

A. The router encapsulates a new destination IP address before sending the data. B. The router removes the data frame header and checks the destination IP address. C. The router searches the IP routing table based on the port number in the transport layer header. D. The router checks the content of the application-layer data and determines the port from which to send the data.

Suggested Answer: A,C,D Vote an answer

A router works mainly at the network layer . When it receives a frame, it removes the Layer 2 header and trailer, examines the destination IP address in the Layer 3 header, consults the routing table, selects the outgoing interface, and then re-encapsulates the packet into a new Layer 2 frame for the next hop. Therefore, statement B is true and is not part of the answer.
Statement A is false because the router does not create a new destination IP address during normal forwarding. The source and destination IP addresses remain unchanged end to end unless special functions such as NAT are used. Statement C is false because routing-table lookup is based on the destination IP address, not on TCP or UDP port numbers. Statement D is also false because normal IP routing does not inspect application-layer content to determine the outgoing interface. That decision is made from the network- layer destination address and the routing table. This question tests the layered forwarding logic of routers in TCP/IP networks.

by Lynn at Oct 22, 2026, 11:27 PM

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