Question 1

An organization with a class B network address uses 8 bits for the subnet ID.Each subnet in this organization can have _____ hosts.&#10;A)512&#10;B)64&#10;C)128&#10;D)256

Accepted Answer

A class B network address uses a default subnet mask of 255.255.0.0, which provides 16 bits for host addresses. If 8 bits are used for the subnet ID, that leaves 8 bits for host addresses within each subnet. 2^8 = 256. However, one address is used for the network address and one for the broadcast address, leaving 254 usable addresses for hosts. The closest answer provided is 256, which is the total number of addresses including the network and broadcast addresses.

Question 2

An organization with a class B network address has 50 subnets.Each subnet in this organization can have at most _____ bits for the host ID.&#10;A)8&#10;B)9&#10;C)10&#10;D)12

Accepted Answer

A class B network address has a default subnet mask of 255.255.0.0 which means that the network portion of the address is the first 16 bits and the rest is for the host ID.

To create 50 subnets, we need to borrow bits from the host ID portion and allocate them to the network portion.

The formula to calculate the number of bits required for the subnet mask is:

2^n >= number of subnets

where n is the number of bits borrowed.

In our case,

2^n >= 50

n = 6

This means we need to borrow 6 bits from the host ID portion and add them to the network portion.

The new subnet mask would be 255.255.252.0 which means the network portion is 18 bits and the host ID portion is 14 bits.

Therefore, each subnet in this organization can have at most 14 bits for the host ID.

Option C: 10 bits is the closest to 14, and it is less than 14. Therefore, it is the right choice.

Question 3

Subnetting is _____.&#10;A)a way of breaking down large blocks of IP addresses into smaller address blocks&#10;B)a way of reusing IP addresses&#10;C)a way of reducing the size of networks&#10;D)a way of distributing applications

Accepted Answer

Subnetting is the process of dividing a larger block of IP addresses into smaller blocks. This is done for a number of reasons, including efficient use of address space and better network management. Subnetting can be used to break down a large network into smaller subnetworks, each with its own unique range of IP addresses. This allows for better organization of network resources and improved security.

Question 4

An organization with a class B network address has 100 subnets.The most suitable subnet mask for the organization is _____.&#10;A)255.255.255.0&#10;B)255.255.254.0&#10;C)255.255.252.0&#10;D)255.255.248.0

Accepted Answer

The answer of An organization with a class B network...

Question 5

An organization with a class B network address uses 7 bits for the subnet ID.Each subnet in this organization can have _____ hosts.&#10;A)512&#10;B)64&#10;C)128&#10;D)256

Accepted Answer

A class B network address has 16 bits for the subnet ID. Since this organization uses 7 bits for the subnet ID, it has 16 - 7 = 9 bits remaining for the host ID. This means that each subnet can have 2^9 = 512 hosts.

Question 6

An organization with a class B network address has 100 subnets.Each subnet in this organization can have at most _____ bits for the host ID.&#10;A)8&#10;B)9&#10;C)7&#10;D)6

Accepted Answer

For a class B network address, there are 16 bits reserved for the network ID and 16 bits reserved for the host ID. 
To create 100 subnets, we need to borrow bits from the host ID portion and use them as subnet ID bits. 
The formula for calculating the number of bits required for the subnet ID is:
2^n ≥ number of subnets
where n is the number of bits borrowed. 
In this case, we need to find the smallest value of n that satisfies the above inequality:
2^n ≥ 100
n = 7
Therefore, we need to borrow 7 bits from the host ID to create 100 subnets. The remaining 9 bits can be used for the host ID. Hence, the answer is B.

Question 7

An organization with a class B network address uses 6 bits for the subnet ID.Each subnet in this organization can have _____ hosts.&#10;A)512&#10;B)1,024&#10;C)2,048&#10;D)4,096

Accepted Answer

With a class B network address, the default subnet mask is 255.255.0.0, which means there are 16 bits available for host IDs (32-16 = 16). If 6 bits are used for subnet IDs, then there are 10 bits remaining for host IDs (16-6 = 10). 
We can calculate the number of hosts per subnet as 2^10 - 2 = 1,024 - 2 = 1,022. The -2 is because the first and last IP address in each subnet are reserved for the network address and broadcast address respectively. Therefore, each subnet can have 1,022 hosts. 
So, the best choice is B.

Question 8

An organization with a class B network address has 200 subnets.Each subnet in this organization can have at most _____ hosts.&#10;A)64&#10;B)128&#10;C)256&#10;D)512

Accepted Answer

A class B network has a subnet mask of 255.255.0.0. This means that the first two octets of the IP address are used to identify the network, and the last two octets are used to identify the host. Since there are 200 subnets, the first two octets of the IP address can take on 200 different values. This leaves 8 bits for the host portion of the IP address, which means that each subnet can have at most 256 hosts.

Question 9

When a network uses subnetting,the IP addresses in the organization can be seen to have at least _____ parts.&#10;A)2&#10;B)6&#10;C)4&#10;D)3

Accepted Answer

Subnetting divides an IP address into three parts: the network part, the subnet part, and the host part.

Question 10

Subnetting offers all of the following benefits except _____.&#10;A)it helps organize IP addresses&#10;B)it helps delegation of networking responsibilities&#10;C)it helps DNS operation&#10;D)it simplifies routing

Accepted Answer

Subnetting helps organize IP addresses, delegation of networking responsibilities, and simplifies routing. However, it does not have a direct impact on DNS operation, as DNS operates independently of IP address organization and routing.

Question 11

The number of subnets in the organization is best determined by _____.&#10;A)the structure of the organization&#10;B)the network administrator's abilities&#10;C)the number of hosts computers)in the organization&#10;D)None of the above

Accepted Answer

The answer of The number of subnets in the organization...

Question 12

An organization has 100 subnets.The subnet part of the IP addresses in the organization must have at least _______ bits.&#10;A)5&#10;B)6&#10;C)7&#10;D)8

Accepted Answer

The answer of An organization has 100 subnets.The subnet part...

Question 13

An organization has 20 subnets.The subnet part of the IP addresses in the organization must have at least _______ bits.&#10;A)4&#10;B)5&#10;C)6&#10;D)7

Accepted Answer

The answer of An organization has 20 subnets.The subnet part...

Question 14

An organization with a class B network address has 50 subnets.The most suitable subnet mask for the organization is _____.&#10;A)255.255.255.0&#10;B)255.255.254.0&#10;C)255.255.252.0&#10;D)255.255.248.0

Accepted Answer

The answer of An organization with a class B network...

Question 15

An organization with a class B network address has 100 subnets.Each subnet in this organization can have at most _____ hosts.&#10;A)64&#10;B)128&#10;C)256&#10;D)512

Accepted Answer

The answer of An organization with a class B network...

Question 16

Subnetting is most useful for _____.&#10;A)the Internet registrars&#10;B)network administrators&#10;C)end users&#10;D)None of the above

Accepted Answer

The answer of Subnetting is most useful for _____.&#10;A)the Internet...

Question 17

An organization with a class B network address has 200 subnets.Each subnet in this organization can have at most _____ bits for the host ID.&#10;A)8&#10;B)9&#10;C)7&#10;D)6

Accepted Answer

The answer of An organization with a class B network...

Question 18

An organization with a class B network address has 200 subnets.The most suitable subnet mask for the organization is _____.&#10;A)255.255.255.0&#10;B)255.255.254.0&#10;C)255.255.252.0&#10;D)255.255.248.0

Accepted Answer

The answer of An organization with a class B network...

Question 19

An organization with a class B network address has 50 subnets.Each subnet in this organization can have at most _____ hosts.&#10;A)1,024&#10;B)512&#10;C)256&#10;D)128

Accepted Answer

The answer of An organization with a class B network...

Question 20

An organization has 50 subnets.The subnet part of the IP addresses in the organization must have at least _______ bits.&#10;A)4&#10;B)5&#10;C)6&#10;D)7

Accepted Answer

The answer of An organization has 50 subnets.The subnet part...

Question 21

When the subnet mask 255.255.252.0 is applied to the IP address 192.168.151.45,the result is _____.&#10;A)255.255.255.0&#10;B)192.168.151.145&#10;C)192.168.148.0&#10;D)192.168.150.0

Accepted Answer

The answer of When the subnet mask 255.255.252.0 is applied...

Question 22

When the subnet mask 255.255.254.0 is applied to the IP address 192.168.151.45,the result is _____.&#10;A)255.255.255.0&#10;B)192.168.151.0&#10;C)255.155.155.155&#10;D)192.168.150.0

Accepted Answer

The answer of When the subnet mask 255.255.254.0 is applied...

Question 23

When the subnet mask 255.255.255.0 is applied to the IP address 192.168.151.45,the result is _____.&#10;A)255.255.255.0&#10;B)192.168.151.45&#10;C)255.255.255.255&#10;D)192.168.151.0

Accepted Answer

The answer of When the subnet mask 255.255.255.0 is applied...

Question 24

Hosts typically obtain their subnet mask information from _____.&#10;A)network administrators,who configure hosts manually at first boot&#10;B)DHCP&#10;C)the factory,where the subnet mask is hard-wired during computer assembly&#10;D)None of the above

Accepted Answer

The answer of Hosts typically obtain their subnet mask information...

Question 25

If an organization has a subnet mask of 255.255.252.0,each subnet in the organization can have at most _____ hosts.&#10;A)256&#10;B)512&#10;C)1,024&#10;D)2,048

Accepted Answer

The answer of If an organization has a subnet mask...

Deck 8: Subnetting