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VLSM

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Select all that are correct about a router

a)

Each side of a router is a different broadcast domain

b)

Routers extend broadcast domains

c)

Routers separate broadcast domains

d)

Each side of a router is a different subnet

2.

What is the size of a /24 sub-net ?

a)

24

b)

256

c)

253

d)

240

3.

What is the range of a 192.168.1.0/25 sub-net ?

a)

192.168.1.0 - 192.168.1.128

b)

192.168.1.1 - 192.168.1.127

c)

192.168.1.0 - 192.168.1.127

d)

192.168.1.1 - 192.168.1.128

4.

What is the dotted decimal representation of a /28 network ?

a)

255.255.255.0

b)

255.255.255.252

c)

255.255.255.248

d)

255.255.255.240

5.

What is the usable IP range in 192.168.1.128/25 network ?

a)

192.168.1.128 - 192.168.1.255

b)

192.168.1.129 - 192.168.1.254

c)

192.168.1.128 - 192.168.1.254

d)

192.168.1.129 - 192.168.1.255

6.

Each time you use or create an IP subnet, there are two IP addresses in the range which cannot be allocated as usable IP addresses, the first address identifies

a)

broadcast address

b)

netmask

c)

gateway

d)

the subnet

7.

The place to buy IP address ranges in the Asia/Pacific region is called

a)

NIC

b)

DARP

c)

APNIC

d)

LUG

8.

How would you divide the subnet 98.11.12.0/24 into four equal sized networks ?

a)

98.11.12.0/25, 98.11.12.64/25, 98.11.12.128/25, 98.11.12.192/25

b)

98.11.12.0/26, 98.11.12.64/26, 98.11.12.128/26, 98.11.12.192/26

c)

98.11.12.0/27, 98.11.12.64/27, 98.11.12.128/27, 98.11.12.192/27

d)

98.11.12.0/28, 98.11.12.64/28, 98.11.12.128/28, 98.11.12.192/28

9.

What is the subnet id, first usable IP address, last usable IP address and the broadcast address of subnet 98.11.12.0/24 ?

a)

98.11.12.1, 98.11.12.2, 98.11.12.255, 98.11.12.256

b)

98.11.12.1, 98.11.12.2, 98.11.12.254, 98.11.12.255

c)

98.11.12.0, 98.11.12.1, 98.11.12.255, 98.11.12.256

d)

98.11.12.0, 98.11.12.1, 98.11.12.254, 98.11.12.255

10.

What is the next IP address that comes after 11.12.23.255?

a)

11.12.23.0

b)

11.12.23.256

c)

11.12.24.0

d)

11.12.24.256

11.

What is the step factor for a /24 subnet ?

a)

1.0

b)

128

c)

64

d)

32

12.

Select the smallest subnet allocation for a LAN the requires 500 IP addresses:

a)

192.168.0.0/21

b)

192.168.0.0/22

c)

192.168.0.0/23

d)

192.168.0.0/24

13.

A physical topology shows

a)

subnet id, first usable IP address, last usable IP address and the broad address

b)

the physical locations of all devices and the design of cables

c)

shows the interconnection between devices, the configurations, IP addresses, and the port numbers

d)

the physical distance between network devices

14.

An access router

a)

is a router which usually include some switch ports as well as routing capability

b)

is a router which connects larger organisations to an ISP or a WAN provider

c)

provides a high speed internal network to route traffic between the many subnets in the organisation, and also to implement security policy

d)

none of the above

15.

To choose the proper vendor for your network equipment needs, there are a number of recommendations to account for (select all that is correct):

a)

Vendors should have a good reputation

b)

Vendors should have financial stability

c)

Vendors should have technological innovation

d)

Vendors should sell at low costs