IP Address Assignment for Servers - Cisco 200-125 Exam

Assigning IP Addresses to Servers - Cisco Exam 200-125

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Question

An administrator must assign static IP addresses to the servers in a network.

For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address.

Which of the following should be entered into the IP properties box for the sales server?

Answers

Explanations

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A. B. C. D. E.

C

A /29 network has only 8 IP addresses, of which 6 are usable IP addresses. This means that 192.168.20.24 represents the network, 192.168.20.25 is the first usable IP address, 192.168.20.30 is the last usable IP address and 192.168.20.31 is the broadcast address on the network. Another way to write /29 is

255.255.255.248, so the answer is C.

The network 192.168.20.24/29 has a subnet mask of 255.255.255.248, which means there are 8 IP addresses in the subnet, with 6 usable addresses for hosts. The first address is the network address, and the last address is the broadcast address. Therefore, the usable IP addresses are:

  • 192.168.20.25
  • 192.168.20.26
  • 192.168.20.27
  • 192.168.20.28
  • 192.168.20.29

The router is assigned the first usable host address, which is 192.168.20.25. The sales server is given the last usable host address, which is 192.168.20.30.

To configure the sales server with a static IP address, we need to enter the following information into the IP properties box:

  • IP address: 192.168.20.30
  • Subnet mask: 255.255.255.248
  • Default gateway: 192.168.20.25

This means that the sales server will have an IP address of 192.168.20.30 with a subnet mask of 255.255.255.248, which indicates that it is part of the same subnet as the router and the other hosts on the network. The default gateway is set to 192.168.20.25, which is the IP address of the router that connects the network to other networks or the Internet.

Now let's look at each of the answer options:

A. IP address: 192.168.20.14 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.9 This is not a valid IP address for the sales server because it is outside the usable range of addresses in the subnet.

B. IP address: 192.168.20.254 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.20.1 This is not a valid IP address for the sales server because it has a different subnet mask (255.255.255.0) than the subnet (255.255.255.248).

C. IP address: 192.168.20.30 Subnet Mask: 255.255.255.248 Default Gateway: 192.168.20.25 This is the correct answer because it meets the requirements specified in the question.

D. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.17 This is not a valid default gateway address because it is outside the usable range of addresses in the subnet.

E. IP address: 192.168.20.30 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.20.25 This is a valid IP address for the sales server, but the subnet mask is incorrect. The subnet mask for the network is 255.255.255.248, not 255.255.255.240.

Therefore, the correct answer is option C: IP address: 192.168.20.30, Subnet Mask: 255.255.255.248, Default Gateway: 192.168.20.25.