NTC/362: Fundamentals of Networking
- Get link
- X
- Other Apps
Q: A user at host 10.3.0.1 powers on the device and issues a ping 10.3.0.2 command. Which of the following are true about the ARP request sent by the host 10.3.0.1?
Each correct answer represents a complete solution. Choose all that apply.
A: Host 10.3.0.1 is attempting to learn a Layer 2 address, The device processing the request will reply with a unicast frame from host 10.3.0.2 to 10.3.0.1.
Explanation: Because the host just powered up, when it pings 10.3.0.2, the host first needs to use Address Resolution Protocol (ARP) to learn the MAC address used by host 10.3.0.2 (making one answer correct.) The host encapsulates the ARP Request message in an Ethernet broadcast frame, causing all hosts in the LAN to de-encapsulate and process the frame (making one answer incorrect.) The ARP Reply, sent by host 10.3.0.2, is sent directly to host 10.3.0.1 in a unicast Ethernet frame. Finally, note that the ping 10.3.0.2 command does not use any hostname, so it does not cause any DNS name resolution to take place.
- Get link
- X
- Other Apps
Comments
Post a Comment