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Category: 200-125 (v.1)

Briefing 200-125: CCNA Routing and Switching (update October 25th, 2017)

What subnet mask should be assigned to this IP address …

You are working with an Internet Service Provider (ISP) as network manager. A corporate client approaches you to lease a public IP subnet that can accommodate
250 users. You have assigned him the 192.25.27.0 subnet.
What subnet mask should be assigned to this IP address so that it can accommodate the number of users required by the corporate client?

Which command should you use to achieve the objective?

You are the network administrator for your company and have configured Cisco Discovery Protocol (CDP) in your network. You recently noticed that when devices
send large numbers of CDP neighbor announcements, some devices are crashing. You decide to disable CDP on the router.
Which command should you use to achieve the objective?

What command(s) should he run to correct the configuration?

Your assistant has been assigned the task of configuring one end of a WAN link between two offices. The link is a serial connection and the router on the other end
is a non-Cisco router. The router in the other office has an IP address of 192.168.8.6/24. The connection will not come up, so you ask your assistant to show you the
commands he configured on the Cisco router. The commands he executed are shown below.
Ciscorouter(config)# interface serial0/0
Ciscorouter(config-if)# ip address 192.168.8.5 255.255.255.0
Ciscorouter(config-if)# no shut
What command(s) should he run to correct the configuration?


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