Knowee
Questions
Features
Study Tools

What header address information does a router change in the information it receives froman attached Ethernet interface before information is transmitted out another interface?A. only the Layer 2 destination addressB. only the Layer 3 source addressC. only the Layer 3 destination addressD. the Layer 2 source and destination address

Question

What header address information does a router change in the information it receives froman attached Ethernet interface before information is transmitted out another interface?A. only the Layer 2 destination addressB. only the Layer 3 source addressC. only the Layer 3 destination addressD. the Layer 2 source and destination address

🧐 Not the exact question you are looking for?Go ask a question

Solution

The correct answer is D. The Layer 2 source and destination address.

Here's why:

When a router receives a packet, it looks at the Layer 3 destination address to determine the outbound interface. Once it has done this, it will replace the source and destination MAC addresses in the Layer 2 frame header.

The new source MAC address will be the MAC address of the outbound router interface. The new destination MAC address will be the MAC address that corresponds to the next hop IP address in the routing table.

So, the router changes the Layer 2 source and destination address before the information is transmitted out another interface.

This problem has been solved

Similar Questions

Which of the following is true of the Ethernet header.Group of answer choicesAs routers move a packet from one LAN to the next, they remove their MAC address from the destination field. The source field, which contains the MAC address of the originating computer does not change.As routers move a packet from one LAN to the next, they remove both the source and the destination MAC address from the packet and replace those values with two new values. The router's MAC becomes the source address and the MAC address of the next device along the route becomes the destination address.As routers move a packet from one LAN to the next, they do not alter the source or destination MAC address (the do change the source/destination IP address).

Which portion of the network layer address does a router use to forward packets?

A router receives an incoming packet and determines that the destination host is located on a LAN directly attached to one of the router interfaces. Which destination address will the router use to encapsulate the Ethernet frame when forwarding the packet?

What information in the IP packet does the router use to determine which interface to forward the packet?

When a payload of data is passed through a network of routers to travel from a source host to a destination host, the IP source and destination addresses (in the IP header) change under the following circumstances:Question 14Select one:They change for every hop (sender to first router, first router to second router, etc.)They remain unchanged, even while passing through routersThey change at BGP (Border Gateway Protocol) gatewaysThe destination address remains unchanged, but the source address changes at each router

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.