Chapter 7 homework

Question 1

The 8-digit binary value of the last octet of the IPv4 address 172.17.10.7 is

Answer 1

00000111

Refer to curriculum topic: 7.1.1
7 = 4 + 2 + 1 = 00000111

Question 2

What is the prefix length notation for the subnet mask 255.255.255.224?

Answer 2

/27

The binary format for 255.255.255.224 is 11111111.11111111.11111111.11100000. The prefix length is the number of consecutive 1s in the subnet mask. Therefore, the prefix length is /27

Question 3

Which network migration technique encapsulates IPv6 packets inside IPv4 packets to carry them over IPv4 network infrastructures?

Answer 3

tunneling

Question 4

Which type of IPv6 address is not routable and used only for communication on a single subnet?

Answer 4

link-local address
Link-local addresses have relevance only on the local link. Routers will not forward packets that include a link-local address as either the source or destination addres

Question 5

A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?

Answer 5

to test that the host has the capability to reach hosts on other networks

Question 6

IPv4 unicast host addresses are in the address range of _________ to _________

Answer 6

0.0.0.0 to 223.255.255.255

Question 7

As an example, a host within the 172.16.4.0/24 network would broadcast to all hosts in its network using a packet with a destination address of ______

Answer 7

255.255.255.255

Question 8

IPv4 has reserved the _________ to ______addresses as a multicast range

Answer 8

224.0.0.0 to 239.255.255.255

Question 9

The last host address on the 10.15.25.0/24 network is

Answer 9

The host portion of the last host address will contain all 1 bits with a 0 bit for the lowest order or rightmost bit. This address is always one less than the broadcast address. The range of addresses for the network 10.15.25.0/24 is 10.15.25.0 (network address) through 10.15.25.255 (broadcast address). So the last host address for this network is 10.15.25.254

Question 10

Which two types of devices are typically assigned static IP addresses

Answer 10

printers

web servers

Question 11

The shortest compressed format of the IPv6 address 2001:0DB8:0000:1470:0000:0000:0000:0200 is

Answer 11

2001:DB8:0:1470::200

Question 12

The network portion of the address 172.16.30.5/16 is

Answer 12

172.16
A prefix of /16 means that 16 bits are used for the network part of the address. The network portion of the address is therefore 172.16