Cisco Routing Protocols and Concepts
Course (Latest 2026/ 2027 Update)
questions and answers 100% Correct
[Grade A]
Which of the following identify the most efficient use for each of these masks? (Choose
three.)
Use the /30 mask for point-to-point links, such as WAN connections
Use the /30 mask for subnetworks of four or more hosts
Use the /28 mask for small subnetworks with up to 14 hosts
Use the /26 mask for larger subnetworks with up to 62 hosts
Use the /25 mask for the subnetworks with up to 30 hosts
Use the /24 mask for point-to-point links, such as WAN connections - Correct answer
Use the /30 mask for point-to-point links, such as WAN connections
Use the /28 mask for small subnetworks with up to 14 hosts
Use the /26 mask for larger subnetworks with up to 62 hosts
When using a classful class A IP address scheme, how many octets are used to
designate the network portion of the address?
1
2
,3
4 - Correct answer 1
Select the VLSM subnets of the 172.16.0.0 network that will simultaneously provide the
total number of required hosts on each subnet? Match the subnet with the number of
required hosts. (Not all options are used.)
172.16.64.0/18
172.16.16.64.30
172.16.128.0/19
172.16.144.0/25
172.16.18.0/24
172.16.5.128/26
172.16.10.128/28
2 hosts
60 hosts
250 hosts
8,000 hosts
16,000 hosts - Correct answer /30 - 2 hosts
/26 - 60 hosts
/24 - 250 hosts
/19 - 8,000 hosts
,/18 - 16,000 hosts
A network engineer is summarizing the two groups of routes on router R1 shown.
Which summarization will work for all the subnets?
Group A
192.168.0.0/30
192.168.0.4/30
192.168.0.8/30
192.168.0.16/29
Group B
192.168.4.0/30
192.168.5.0/30
192.168.6.0/30
192.168.7.0/29
- 192.168.0.0/23
- 192.168.0.0/22
- 192.168.0.0/21
- 192.168.0.0/20 - Correct answer 192.168.0.0/21
, How many bits are used in the IPv4 address space? - Correct answer 32
Categorize each address by matching it to the appropriate group. Not all items are
used.
192.14.0.0
191.254.45.0
123.90.78.45
128.44.0.23
129.68.11.45
126.0.0.0
198.162.11.0
125.33.23.56
Class A Addresses
Class B Addresses - Correct answer Class A Addresses
125.33.23.56
123.90.78.45
126.0.0.0
Class B Addresses
Course (Latest 2026/ 2027 Update)
questions and answers 100% Correct
[Grade A]
Which of the following identify the most efficient use for each of these masks? (Choose
three.)
Use the /30 mask for point-to-point links, such as WAN connections
Use the /30 mask for subnetworks of four or more hosts
Use the /28 mask for small subnetworks with up to 14 hosts
Use the /26 mask for larger subnetworks with up to 62 hosts
Use the /25 mask for the subnetworks with up to 30 hosts
Use the /24 mask for point-to-point links, such as WAN connections - Correct answer
Use the /30 mask for point-to-point links, such as WAN connections
Use the /28 mask for small subnetworks with up to 14 hosts
Use the /26 mask for larger subnetworks with up to 62 hosts
When using a classful class A IP address scheme, how many octets are used to
designate the network portion of the address?
1
2
,3
4 - Correct answer 1
Select the VLSM subnets of the 172.16.0.0 network that will simultaneously provide the
total number of required hosts on each subnet? Match the subnet with the number of
required hosts. (Not all options are used.)
172.16.64.0/18
172.16.16.64.30
172.16.128.0/19
172.16.144.0/25
172.16.18.0/24
172.16.5.128/26
172.16.10.128/28
2 hosts
60 hosts
250 hosts
8,000 hosts
16,000 hosts - Correct answer /30 - 2 hosts
/26 - 60 hosts
/24 - 250 hosts
/19 - 8,000 hosts
,/18 - 16,000 hosts
A network engineer is summarizing the two groups of routes on router R1 shown.
Which summarization will work for all the subnets?
Group A
192.168.0.0/30
192.168.0.4/30
192.168.0.8/30
192.168.0.16/29
Group B
192.168.4.0/30
192.168.5.0/30
192.168.6.0/30
192.168.7.0/29
- 192.168.0.0/23
- 192.168.0.0/22
- 192.168.0.0/21
- 192.168.0.0/20 - Correct answer 192.168.0.0/21
, How many bits are used in the IPv4 address space? - Correct answer 32
Categorize each address by matching it to the appropriate group. Not all items are
used.
192.14.0.0
191.254.45.0
123.90.78.45
128.44.0.23
129.68.11.45
126.0.0.0
198.162.11.0
125.33.23.56
Class A Addresses
Class B Addresses - Correct answer Class A Addresses
125.33.23.56
123.90.78.45
126.0.0.0
Class B Addresses
