Chp 8 Subnetting

Question 1

Negative effects of large broadcast domains

Answer 1

Slow network operations due to the significant amount of traffic it can cause
Slow device operations because a device must accept and process each broadcast packet

Question 2

The terms subnet and network are often

Answer 2

used interchangeably. Most networks are a subnet of some larger address block.

Question 3

Network administrators can group devices and services into subnets that are determined by:

Answer 3

Location, such as floors in a building (Figure 1).
Organizational unit (Figure 2).
Device type (Figure 3).
Any other division that makes sense for the network.

Question 4

For each bit borrowed in the fourth octet, the number of subnetworks available is doubled while reducing the number of host addresses per subnet.

Answer 4

For each bit borrowed in the fourth octet, the number of subnetworks available is doubled while reducing the number of host addresses per subnet.For each bit borrowed in the fourth octet, the number of subnetworks available is doubled while reducing the number of host addresses per subnet.

Question 5

How is the Network address identified in Binary

Answer 5

contains all 0 bits in the host portion of the address.

Question 6

How is the First Host address of a subnetted IP identified in Binary

Answer 6

contains all 0 bits plus a right-most 1 bit in the host portion of the address.
xxx.xxx.xxx.00000001

Question 7

How is the Last Host address identified in Binary

Answer 7

contains all 1 bits plus a right-most 0 bit in the host portion of the address.
xxx.xxx.xxx.11111110

Question 8

How is the Broadcast address identified in Binary

Answer 8

contains all 1 bits in the host portion of the address.

xxx.xxx.xxx.11111111

Question 9

A very common practice is to use the first or last available address in a network range for the

Answer 9

possible router interface address.

Question 10

What are the commands to configure a router interface with an IP address?

Answer 10

R1(config)# interface gigabitethernet 0/0
R1(config-if)# ip address 192.168.1.1 255.255.255.128
R1(config-if)# exit
R1(config)# interface gigabitethernet 0/1
R1(config-if)# ip address 192.168.1.1 255.255.255.128
R1(config-if)# exit

Question 11

When borrowing bits from a /16 address, start borrowing bits in the third octet, going from left to right. Only borrow a single

Answer 11

bit at a time until the desired number of bits necessary to create the subnets is reached.

Question 12

2^9

Answer 12

512

Question 13

2^10

Answer 13

1024

Question 14

2^11

Answer 14

2048

Question 15

2^12

Answer 15

4096

Question 16

2^13

Answer 16

8192

Question 17

2^14

Answer 17

16384