Chapter 9 Subnetting

In a network that uses IPv4, what prefix would best fit a subnet containing 100 hosts? /23 /24 /25 /26

/25

Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.) /62 /64 /66 /68 /70

/64 /68

When subnetting a /64 IPv6 network prefix, which is the preferred new prefix? /66 /70 /72 /74

/72

How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0? 510 512 1022 1024 2046 2048

1022

In dotted decimal notation, the IP address ______ is the last host address for the network 172.25.0.64/26. The binary representation of the network address 172.25.0.64 is 10101100.00011001.00000000.01000000, where the last six zeros represent the host part of the address. The last address on that subnet would have the host part equal to 111111, and the last host address would end in 111110. This results in a binary representation of the last host of the IP address as 10101100.00011001.00000000.01111110, which translates in decimal to 172.25.0.126.

172.25.0.126

A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.) 192.168.1.16/28 192.168.1.64/27 192.168.1.128/27 192.168.1.96/28 192.168.1.192/28

192.168.1.64/27 192.168.1.96/28

What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64? 2001:DB8:BC15::0 2001:DB8:BC15:A::0 2001:DB8:BC15:A:1::1 2001:DB8:BC15:A:12::0

2001:DB8:BC15:A::0

Fill in the blank. In dotted decimal notation, the subnet mask, ______, will accommodate 500 hosts per subnet. If the network has to accommodate 500 hosts per subnet, then we need 9 host bits (2^9 - 2 = 510 hosts). The Class B subnet mask has 16 bits available and if we use 9 bits for hosts, we will have 7 network bits remaining.The subnet mask with 9 host bits is 11111111.11111111.11111110.00000000, which corresponds to 255.255.254.0.

255.255.254.0

A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit? 255.255.255.0 255.255.255.128 255.255.255.192 255.255.255.224 255.255.255.240

255.255.255.128

How many usable host addresses are there in the subnet 192.168.1.32/27? 32 30 64 16 62

30

Fill in the blank. A nibble consists of, ___,bits.

4

A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.248. How many host addresses will this subnet provide?​ 4 6 8 10 12

6

Consider the following range of addresses: 2001:0DB8:BC15:00A0:0000:: 2001:0DB8:BC15:00A1:0000:: 2001:0DB8:BC15:00A2:0000:: ... 2001:0DB8:BC15:00AF:0000:: The prefix for the range of addresses is, ___.

60

When developing an IP addressing scheme for an enterprise network, which devices are recommended to be grouped into their own subnet or logical addressing group? end-user clients workstation clients mobile and laptop hosts hosts accessible from the Internet

Hosts accessible from the Internet

Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.) It eliminates most address configuration errors. It ensures that addresses are only applied to devices that require a permanent address. It guarantees that every device that needs an address will get one. It provides an address only to devices that are authorized to be connected to the network. It reduces the burden on network support staff.

It eliminates most address configuration errors It reduces the burden on network support staff

A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices? Random static addresses to improve security Addresses from different subnets for redundancy Predictable static IP addresses for easier identification Dynamic addresses to reduce the probability of duplicate addresses

Predictable static IP addresses for easier identification

How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks? two three four five

Three