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WorksheetsNetworking Week 6
Total questions: 39
Worksheet time: 22mins
An administrator has subnetted the 192.168.2.0 network, creating subnets with a /27
prefix. What are the network addresses of the first three subnets?
192.168.2.0, 192.168.2.64, 192.168.2.128
192.168.2.0, 192.168.2.32, 192.168.2.64
192.168.2.0, 192.168.2.16, 192.168.2.32
192.168.2.0, 192.168.2.8, 192.168.2.16
An administrator has subnetted the 192.168.2.0 network, creating subnets with a /28
prefix. What are the network addresses of the first three subnets?
192.168.2.0, 192.168.2.64, 192.168.2.128
192.168.2.0, 192.168.2.32, 192.168.2.64
192.168.2.0, 192.168.2.16, 192.168.2.32
192.168.2.0, 192.168.2.8, 192.168.2.16
A network has subnet mask 255.255.255.0. What is the maximum number of hosts on
the network?
30
62
126
254
A network is using a subnet mask of 255.255.252.0. How many host addresses can the
network have?
2
30
62
1022
510
A network is using a subnet mask of 255.255.255.192. How many host addresses can
the network have?
30
32
62
64
128
A network needs 20 hosts. What subnet mask would give the minimum acceptable
size of network?
255.255.255.0
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
A network needs 300 hosts. What subnet mask would give the minimum acceptable
size of network?
255.255.0.0
255.255.248.0
255.255.252.0
255.255.254.0
255.255.255.0
A workstation is configured as follows. What is the problem?
IP address 172.16.3.127
Subnet mask 255.255.255.128
Default gateway 172.16.3.1
The workstation has been given a broadcast address.
The workstation has been given a network address.
The subnet mask is not valid.
The default gateway is on a different network/subnet from the workstation.
The default gateway is not a valid host address.
A workstation is configured as follows. What is the problem?
IP address 172.16.3.61
Subnet mask 255.255.255.192
Default gateway 172.16.3.65
The workstation has been given a broadcast address.
The workstation has been given a network address
The subnet mask is not valid.
The default gateway is on a different network/subnet from the workstation
The default gateway is not a valid host address.
A workstation is configured as follows. What is the problem?
IP address 172.16.3.68
Subnet mask 255.255.255.180
Default gateway 172.16.3.65
The workstation has been given a broadcast address.
The workstation has been given a network address
The subnet mask is not valid.
The default gateway is on a different network/subnet from the workstation.
The default gateway is not a valid host address.
How is the logical AND operation used in networking?
Routers use AND on the destination IP address and the source IP address of a
packet to find the network address.
Routers use AND on the destination IP address and the source IP address of a
packet to find the subnet mask.
Routers use AND on the destination IP address and subnet mask of a packet to
find the destination network address.
Routers use AND on the source IP address and subnet mask of a packet to find
the source network address.
How many bits make up an IPv4 address?
8
12
32
40
64
How many bits make up the network part of the address?
8
12
16
24
it varies
How many different combinations can you get by using one octet (8 bits)?
127
128
255
256
512
If an administrator starts with the network address 192.168.1.0/24 and borrows 3 bits
for subnetting (without VLSM), which of these addresses must not be assigned to
hosts? (Choose 2)
192.168.1.16
192.168.1.48
192.168.1.63
192.168.1.160
192.168.1.190
If an administrator starts with the network address 192.168.1.0/24 and borrows 3 bits
for subnetting (without VLSM), how many host addresses are there on each network?
2
6
14
30
62
If an administrator starts with the network address 192.168.1.0/24 and borrows 2 bits
for subnetting (without VLSM), how many subnets are produced?
2
4
8
16
In dotted decimal format, an IP address is written as 205.102.93.87. How can this IP
address be written in binary notation?
11001101.01010110.01011010.01010111
11001101.01100110.01011101.01010111
11010101.01100110.01011111.01010111
11001101.01100110.01011101.01000111
What does NAT do?
It allocates IP addresses for hosts to use on their local network.
It translates between addresses at different OSI layers.
It translates private IP addresses used inside a network into public addresses
for use on the internet.
It translates public IP addresses used inside a network into private addresses
for use on the internet.
What improvements should IPv6 bring? (Choose 3)
Greater bandwidth
More addresses available
Incorporates security
More support for quality of service
Incorporates existing addresses without changes
What is the network address of the host with IP address 192.168.22.83/24?
192.168.22.0
192.168.22.64
192.168.22.72
192.168.22.80
What is the network address of the host with IP address 192.168.22.83/26?
192.168.22.0
192.168.22.64
192.168.22.72
192.168.22.80
What is the network address of the host with IP address 192.168.22.83/27?
192.168.22.0
192.168.22.64
192.168.22.72
192.168.22.80
What is the network address of the host with IP address 192.168.22.83/28?
192.168.22.0
192.168.22.64
192.168.22.72
192.168.22.80
What prefix would be used for a point to point network if no host addresses were
unused?
/24
/26
/28
/30
/32
What subnet mask is suitable (and economical) for a point to point link with two
hosts?
255.255.255.0
255.255.255.240
255.255.255.248
255.255.255.252
255.255.255.254
When is it acceptable for two hosts to have the same IP address at the same time?
When they are on different networks that use private IP addresses
When they are on the same network and it uses private IP addresses
When they are on different networks that use public IP addresses
When they are on the same network and it uses public IP addresses
Which address is used as a loopback so that a host can send messages to itself?
192.168.1.1
172.0.0.1
127.0.0.1
10.0.0.1
Which is true of DHCP?
It keeps a list of hosts and their IP addresses, and allocates IP addresses only
to hosts on the list.
It has a pool of IP addresses, and it can lease these dynamically to hosts on the
network.
All hosts on a network should have their IP addresses allocated by DHCP.
DHCP is used for allocating IP addresses to laptops, but is not used for
desktop computers that remain connected to the network for long periods.
Which of these IP addresses are private? (Choose 3)
172.18.2.9
192.168.105.200
10.38.200.194
192.186.30.29
12.12.34.89
Which of these IPv4 addresses are broadcast addresses? (Choose 2)
192.168.20.15/25
192.168.20.31/26
192.168.20.47/25
192.168.20.63/26
192.168.20.127/25
Which of these IPv4 addresses are host addresses? (Choose 2)
192.168.1.80/26
192.168.1.80/28
192.168.1.64/26
192.168.1.40/26
192.168.1.63/27
Which of these IPv4 addresses are network addresses? (Choose 2)
192.168.17.16/27
192.168.17.32/27
192.168.17.48/27
192.168.17.80/27
192.168.17.96/27
Which prefix corresponds to a subnet mask of 255.255.255.0?
/22
/24
/26
/28
Which prefix corresponds to a subnet mask of 255.255.255.240?
/22
/24
/26
/28
Which protocol is used to provide control and messaging capabilities for TCP/IP at
the Internet layer?
TCP
IP
ICMP
ARP
RARP
Which statements are true of private IP addresses? (Choose 2)
Packets to private addresses are not forwarded on the Internet.
The use of private addresses is strictly regulated by IANA.
Any address starting with 192.168 is a private address.
Any address starting with 172 is a private address.
Which statements are true of static IP addresses?
Static IP addresses are configured manually by a network administrator.
Static IP addresses are allocated automatically when a host joins a network
LAN workstations should be given static addresses.
Servers and routers should be given static addresses.
Which subnet mask is equivalent to /20?
255.255.240.0
255.255.252.0
255.255.255.0
255.255.255.192
255.255.255.240
