CCNA Chapter 8: Subnetting

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Three devices are on three different subnets. Match the network address and the broadcast address with each subnet where these devices are located. (Not all options are used.)

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The last host address on the 10.15.25.0/24 network is .

10.15.25.254

Which two network addresses can be assigned to the network containing 10 hosts? answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.)

10.18.10.208/28 10.18.10.224/28 (last subnet used is 10.18.19.192)

The network portion of the address 172.16.30.5/16 is .

172.16

A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?

4

How many host addresses are available on the 192.168.10.128/26 network?

62

Device 1: IP address 192.168.10.77/28 on subnet 1

Subnet 1 network number 192.168.10.64 Subnet 1 broadcast address: 192.168.10.79

Device 2: IP address192.168.10.17/30 on subnet 2

Subnet 2 network number: 192.168.10.16 Subnet 2 broadcast address 192.168.10.19

What does the IP address 192.168.1.15/29 represent?

broadcast address

A college has five campuses. Each campus has IP phones installed. Each campus has an assigned IP address range. For example, one campus has IP addresses that start with 10.1.x.x. On another campus the address range is 10.2.x.x. The college has standardized that IP phones are assigned IP addresses that have the number 4X in the third octet. For example, at one campus the address ranges used with phones include 10.1.40.x, 10.1.41.x, 10.1.42.x, etc. Which two groupings were used to create this IP addressing scheme? (Choose two.)

geographic location device type

What are two benefits of subnetting networks? (Choose two.)

reducing the size of broadcast domains grouping devices to improve management and security

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

subnetwork 192.168.1.64 subnet mask 255.255.255.192

Device 3: IP address 192.168.10.35/29 on subnet 3

Subnet 3 network number 192.168.10.32 Subnet 3 broadcast address 192.168.10.39


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