Implement core and distributed network solutions

Question 1

You have been given the task of configuring IPv4 subnets for a new branch office.
You examine the documentation for A. Datum’s network and determine that the next
available subnet is 172.16.24.0/21. What is the first IPv4 host address that you can
assign in this subnet?

Answer 1

172.16.24.0/21 uses 21 bits for the subnet mask. This means that the mask, expressed
in decimal, is 255.255.248.0. Consequently, the first subnet ID is 172.16.8.0, the next
is 172.16.16.0, the third is 172.16.24.0, and the fourth is 172.16.32.0. The first host
in a subnet is 1 binary digit higher than the subnet ID. Therefore, the first host in
172.16.24.0/21 is 172.16.24.1/21.

Question 2

What is the last available host that you can assign in subnet 172.16.24.0/21?

Answer 2

The last host in any subnet is 2 binary digits lower than the next subnet ID. The
next subnet ID in this instance is 172.16.32.0. Therefore, the last host in subnet
172.16.24.0/21 is 172.16.31.254/21.

Question 3

You are troubleshooting an IPv6 deployment. You use ipconfig /all to verify the
configuration of an IPv6 host. The command returns a value for one of the network
interfaces of FE80. What type of IPv6 address begins with FE80?

Answer 3

Link-local addresses begin FE80.

Question 4

You are in the process of installing an application that requires IPv6. Most of the
networked devices in A. Datum are IPv4 based. You decide to implement an IPv6
transition technology. When would ISATAP be a good choice?

Answer 4

ISATAP is suitable for IPv6/IPv4 transition when all devices are located on an intranet.

Question 5

You are choosing a routing protocol. When would BGP be a suitable choice?

Answer 5

BGP is an exterior gateway protocol. It is used to support large enterprise networked
environments. It is ideal for supporting a CSP with multitenant networks.

Question 6

Your branch office users modify data files that must be collated at the head office.
How can you achieve this?

Answer 6

To collate data files from branch offices, you could implement DFSR. When setting up
the replication group, select a replication group for data collection in the New Replica-
tion Group Wizard.

Question 7

Branch office users access website content from the head office. The content changes
infrequently. You want to make the access to this content quicker, but the link between
the branch and head office is slow and sometimes unavailable. How could you address
this issue? What specific steps must you take?

Answer 7

Consider implementing BranchCache on the web server at the head office. Install the
BranchCache feature on the Windows Server 2016 server computer hosting the web-
site. Then, use GPO to configure the branch offices computers to use distributed cache
mode. You must reconfigure the client computers’ firewall settings. You can also do
this with GPO.