A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router.
How should the network administrator configure the serial interface of the main office router to make the connection?
Click on the arrows to vote for the correct answerA. B. C. D.
The correct answer is C. Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation PPP Main(config-if)# no shut
When connecting a Cisco router to a non- Cisco router, the encapsulation protocol used should be PPP (Point-to-Point Protocol). PPP is an industry-standard protocol that is widely used for connecting routers together over serial links.
The configuration steps to set up a serial link using PPP are as follows:
Enter global configuration mode: Main(config)#
Configure the serial interface: Main(config)# interface serial 0/0
Configure the IP address and subnet mask for the interface: Main(config-if)# ip address 172.16.1.1 255.255.255.252
Configure the encapsulation protocol as PPP: Main(config-if)# encapsulation PPP
Enable the interface: Main(config-if)# no shut
Option A is incorrect because the "ietf" encapsulation protocol is not supported on Cisco routers.
Option D is incorrect because it specifies the Frame Relay encapsulation protocol, which is not appropriate for a point-to-point link. Additionally, the authentication method specified (CHAP) is not necessary for a simple point-to-point link.