CCNA EXAM PRACTICE QUESTIONS COMPLETE | COMPLETE PRACTICE
QUESTIONS, ANSWERS & STUDY GUIDE 2026/2027
"You have been asked to come up with a subnet mask that will allow all three web servers to be on the
same network while providing the maximum number of subnets. Which network address and subnet
mask meet this requirement?
A. 192.168.252.0 255.255.255.252
B. 192.168.252.8 255.255.255.248
C. 192.168.252.8 255.255.255.252
D. 192.168.252.16 255.255.255.240
E. 192.168.252.16 255.255.255.252" - ANS ✔✔B
"Which subnet mask would be appropriate for a network address range to be submitted for up to eight
LANs, with each LAN containing 5 to 26 hosts?
A. 0.0.0.240
B. 255.255.255.252
C. 255.255.255.0
D. 255.255.255.224
E. 255.255.255.240" - ANS ✔✔D
"An administrator must assign static IP addresses to the servers in a network. For network
192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the
last usable host address. Which of the following should be entered into the IP properties box for the
sales server?
A. IP address: 192.168.20.14
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.9
B. IP address: 192.168.20.254
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.20.1
C. IP address: 192.168.20.30
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.25
D. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.20.17
E. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.20.25" - ANS ✔✔C
,"You are working in a data center environment and are assigned the address range 10.188.31.0/23. You
are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30
hosts each.Which IP address range meets these requirements?
A. 10.188.31.0/27
B. 10.188.31.0/26
C. 10.188.31.0/29
D. 10.188.31.0/28
E. 10.188.31.0/25" - ANS ✔✔A
"Which two benefits are provided by using a hierarchical addressing network addressing scheme?
(Choose two)
A. reduces routing table entries
B. auto-negotiation of media rates
C. efficient utilization of MAC addresses
D. dedicated communications between devices
E. ease of management and troubleshooting" - ANS ✔✔A E
"The network administrator is asked to configure 113 point-to-point links. Which IP addressing scheme
best defines the address range and subnet mask that meet the requirement and waste the fewest
subnet and host addresses?
A. 10.10.0.0/18 subnetted with mask 255.255.255.252
B. 10.10.0.0/25 subnetted with mask 255.255.255.252
C. 10.10.0.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.0.0/16 subnetted with mask 255.255.255.252" - ANS ✔✔D
"Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network
address?
A. 172.16.16.0
B. 172.16.24.0
C. 172.16.0.0
D. 172.16.28.0" - ANS ✔✔A
"A national retail chain needs to design an IP addressing scheme to support a nationwide network. The
company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.
Working with only one Class B address, which of the following subnet masks will support an appropriate
addressing scheme? (Choose two)
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
D. 255.255.255.224
E. 255.255.255.192
,F. 255.255.248.0" - ANS ✔✔B E
"The network administrator needs to address seven LANs. RIP version 1 is the only routing protocol in
use on the network and subnet 0 is not being used. What is the maximum number of usable IP addresses
that can be supported on each LAN if the organization is using one class C address block?
A. 6
B. 8
C. 14
D. 16
E. 30
F. 32" - ANS ✔✔C
"Gateway of last resort is not set
192.168.25.0/30 is subnetted, 4 subnets
D 192.168.25.20 [90/2681856] via 192.168.15.5, 00:00:10, Serial0/1
D 192.168.25.16 [90/1823638] via 192.168.15.5, 00:00:50, Serial0/1
D 192.168.25.24 [90/3837233] via 192.168.15.5, 00:05:23, Serial0/1
D 192.168.25.28 [90/8127323] via 192.168.15.5, 00:06:45, Serial0/1
C 192.168.15.4/30 is directly connected, Serial0/1
C 192.168.2.0/24 is directly connected, FastEthernet0/0
Which address and mask combination a summary of the routes learned by EIGRP?
A. 192.168.25.0 255.255.255.240
B. 192.168.25.16 255.255.255.252
C. 192.168.25.0 255.255.255.252
D. 192.168.25.28 255.255.255.240
E. 192.168.25.16 255.255.255.240
F. 192.168.25.28 255.255.255.240" - ANS ✔✔E
"A router receives information about network 192.168.10.0/24 from multiple sources. What will the
router consider the most reliable information about the path to that network?
A. an OSPF update for network 192.168.0.0/16
B. a static router to network 192.168.10.0/24
C. a static router to network 192.168.10.0/24 with a local serial interface configured as the next hop
D. a RIP update for network 192.168.10.0/24
E. a directly connected interface with an address of 192.168.10.254/24
F. a default route with a next hop address of 192.168.10.1" - ANS ✔✔E
"A router has learned three possible routes that could be used to reach a destination network. One route
is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a metric of 782.
The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing
table?
A. the OSPF route
B. the EIGRP route
, C. the RIPv2 route
D. all three routes
E. the OSPF and RIPv2 routes" - ANS ✔✔B
"A router has two FastEthernet interfaces and needs to connect to four vlans in the local network. How
can you accomplish this task, using the fewest physical interfaces and without decreasing network
performance?
A. Add two more FastEthernet interfaces.
B. Add a second router to handle the vlan traffic.
C. Use a hub to connect the four vlans with a FastEthernet interface on router.
D. Implement a router-on-a-stick configuration." - ANS ✔✔D
"If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?
(Choose two)
A. ip default-gateway 0.0.0.0
B. ip route 172.16.2.1 0.0.0.0 0.0.0.0
C. ip default-network 0.0.0.0
D. ip default-route 0.0.0.0 0.0.0.0 172.16.2.1
E. ip route 0.0.0.0 0.0.0.0 172.16.2.1" - ANS ✔✔C E
"Which two are advantages of static routing when compared to dynamic routing? (choose two)
A. Security increases because only the network administrator may change the routing tables.
B. Configuration complexity decreases as network size increases.
C. Routing updates are automatically sent to neighbors.
D. Route summarization is computed automatically by the router.
E. Routing traffic load is reduced when used in stub network links.
F. An efficient algorithm is used to build routing tables using automatic updates.
G. Routing tables adapt automatically to topology changes." - ANS ✔✔A E
"Which parameter can be tuned to affect the selection of a static route as a backup when a dynamic
protocol is also being used?
A. link bandwidth
B. hop count
C. link cost
D. administrative distance
E. link delay" - ANS ✔✔D
"The output of the show frame-relay pvc command shows "PVC STATUS=INACTIVE". What does this
mean?
A. The PVC is configured correctly and is operating normally,but no data packets have been detected for
more than five minutes.
B. The PVC is configured correctly, is operating normally and is no longer actively seeking the address the
remote route.
QUESTIONS, ANSWERS & STUDY GUIDE 2026/2027
"You have been asked to come up with a subnet mask that will allow all three web servers to be on the
same network while providing the maximum number of subnets. Which network address and subnet
mask meet this requirement?
A. 192.168.252.0 255.255.255.252
B. 192.168.252.8 255.255.255.248
C. 192.168.252.8 255.255.255.252
D. 192.168.252.16 255.255.255.240
E. 192.168.252.16 255.255.255.252" - ANS ✔✔B
"Which subnet mask would be appropriate for a network address range to be submitted for up to eight
LANs, with each LAN containing 5 to 26 hosts?
A. 0.0.0.240
B. 255.255.255.252
C. 255.255.255.0
D. 255.255.255.224
E. 255.255.255.240" - ANS ✔✔D
"An administrator must assign static IP addresses to the servers in a network. For network
192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the
last usable host address. Which of the following should be entered into the IP properties box for the
sales server?
A. IP address: 192.168.20.14
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.9
B. IP address: 192.168.20.254
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.20.1
C. IP address: 192.168.20.30
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.25
D. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.20.17
E. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.20.25" - ANS ✔✔C
,"You are working in a data center environment and are assigned the address range 10.188.31.0/23. You
are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30
hosts each.Which IP address range meets these requirements?
A. 10.188.31.0/27
B. 10.188.31.0/26
C. 10.188.31.0/29
D. 10.188.31.0/28
E. 10.188.31.0/25" - ANS ✔✔A
"Which two benefits are provided by using a hierarchical addressing network addressing scheme?
(Choose two)
A. reduces routing table entries
B. auto-negotiation of media rates
C. efficient utilization of MAC addresses
D. dedicated communications between devices
E. ease of management and troubleshooting" - ANS ✔✔A E
"The network administrator is asked to configure 113 point-to-point links. Which IP addressing scheme
best defines the address range and subnet mask that meet the requirement and waste the fewest
subnet and host addresses?
A. 10.10.0.0/18 subnetted with mask 255.255.255.252
B. 10.10.0.0/25 subnetted with mask 255.255.255.252
C. 10.10.0.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.0.0/16 subnetted with mask 255.255.255.252" - ANS ✔✔D
"Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network
address?
A. 172.16.16.0
B. 172.16.24.0
C. 172.16.0.0
D. 172.16.28.0" - ANS ✔✔A
"A national retail chain needs to design an IP addressing scheme to support a nationwide network. The
company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.
Working with only one Class B address, which of the following subnet masks will support an appropriate
addressing scheme? (Choose two)
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
D. 255.255.255.224
E. 255.255.255.192
,F. 255.255.248.0" - ANS ✔✔B E
"The network administrator needs to address seven LANs. RIP version 1 is the only routing protocol in
use on the network and subnet 0 is not being used. What is the maximum number of usable IP addresses
that can be supported on each LAN if the organization is using one class C address block?
A. 6
B. 8
C. 14
D. 16
E. 30
F. 32" - ANS ✔✔C
"Gateway of last resort is not set
192.168.25.0/30 is subnetted, 4 subnets
D 192.168.25.20 [90/2681856] via 192.168.15.5, 00:00:10, Serial0/1
D 192.168.25.16 [90/1823638] via 192.168.15.5, 00:00:50, Serial0/1
D 192.168.25.24 [90/3837233] via 192.168.15.5, 00:05:23, Serial0/1
D 192.168.25.28 [90/8127323] via 192.168.15.5, 00:06:45, Serial0/1
C 192.168.15.4/30 is directly connected, Serial0/1
C 192.168.2.0/24 is directly connected, FastEthernet0/0
Which address and mask combination a summary of the routes learned by EIGRP?
A. 192.168.25.0 255.255.255.240
B. 192.168.25.16 255.255.255.252
C. 192.168.25.0 255.255.255.252
D. 192.168.25.28 255.255.255.240
E. 192.168.25.16 255.255.255.240
F. 192.168.25.28 255.255.255.240" - ANS ✔✔E
"A router receives information about network 192.168.10.0/24 from multiple sources. What will the
router consider the most reliable information about the path to that network?
A. an OSPF update for network 192.168.0.0/16
B. a static router to network 192.168.10.0/24
C. a static router to network 192.168.10.0/24 with a local serial interface configured as the next hop
D. a RIP update for network 192.168.10.0/24
E. a directly connected interface with an address of 192.168.10.254/24
F. a default route with a next hop address of 192.168.10.1" - ANS ✔✔E
"A router has learned three possible routes that could be used to reach a destination network. One route
is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a metric of 782.
The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing
table?
A. the OSPF route
B. the EIGRP route
, C. the RIPv2 route
D. all three routes
E. the OSPF and RIPv2 routes" - ANS ✔✔B
"A router has two FastEthernet interfaces and needs to connect to four vlans in the local network. How
can you accomplish this task, using the fewest physical interfaces and without decreasing network
performance?
A. Add two more FastEthernet interfaces.
B. Add a second router to handle the vlan traffic.
C. Use a hub to connect the four vlans with a FastEthernet interface on router.
D. Implement a router-on-a-stick configuration." - ANS ✔✔D
"If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?
(Choose two)
A. ip default-gateway 0.0.0.0
B. ip route 172.16.2.1 0.0.0.0 0.0.0.0
C. ip default-network 0.0.0.0
D. ip default-route 0.0.0.0 0.0.0.0 172.16.2.1
E. ip route 0.0.0.0 0.0.0.0 172.16.2.1" - ANS ✔✔C E
"Which two are advantages of static routing when compared to dynamic routing? (choose two)
A. Security increases because only the network administrator may change the routing tables.
B. Configuration complexity decreases as network size increases.
C. Routing updates are automatically sent to neighbors.
D. Route summarization is computed automatically by the router.
E. Routing traffic load is reduced when used in stub network links.
F. An efficient algorithm is used to build routing tables using automatic updates.
G. Routing tables adapt automatically to topology changes." - ANS ✔✔A E
"Which parameter can be tuned to affect the selection of a static route as a backup when a dynamic
protocol is also being used?
A. link bandwidth
B. hop count
C. link cost
D. administrative distance
E. link delay" - ANS ✔✔D
"The output of the show frame-relay pvc command shows "PVC STATUS=INACTIVE". What does this
mean?
A. The PVC is configured correctly and is operating normally,but no data packets have been detected for
more than five minutes.
B. The PVC is configured correctly, is operating normally and is no longer actively seeking the address the
remote route.
