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CCNA Quiz Online Test Mcqs

Maan AliLast Updated: January 29, 2021

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This quiz includes mcq’s questions about the CCNA. This quiz will help you test and improve your knowledge about it will ease as it includes all the important questions related to it. You will be given multiple options for each question and need to select the correct one.

CCNA Quiz Online Test Mcqs Questions with Answers

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Question 1 of 25

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1. When are link-state packets sent to neighbors?

Every 180 seconds

Every 30 seconds

When a link goes up or down

After the holddown time expires

Question 1 of 25

Question 2 of 25

2. What is the final step in the link state routing process?

DUAL algorithm is run to find best path to destination networks

SPF computes best path to each destination network

LSPs are flooded to all neighbors to converge the network

Successors are placed into the routing table

Question 2 of 25

Question 3 of 25

3. What speeds up convergence in a network using link-state routing?

Updates that include complete routing tables

Updates sent at regular intervals

Updates sent only to directly connected neighbors

Updates triggered by network changes

Question 3 of 25

Question 4 of 25

4. Why is it difficult for routing loops to occur in networks that use link-state routing?

Each router builds a complete and synchronized view of the network

Routers use hold-down timers to prevent routing loops

Each router builds a simple view of the network based on hop count

Routers flood the network with LSAs to discover routing loops

Question 4 of 25

Question 5 of 25

5. Refer to the exhibit. What does JAX do with link-state packets from ORL?

Queries BOS to see if it has a better route

Sends out the individual link-state packets out the interface connected to BOS

Only adds it to the local routing table and performs no other actions

Sends out its updated routing table to both ORL and BOS routers

Question 5 of 25

Question 6 of 25

6. Which protocol working at the Transport layer provides a connectionless service between hosts?

UDP

ARP

TCP

Question 6 of 25

Question 7 of 25

7. If a host broadcasts a frame that includes a source and destination hardware address, and its purpose is to assign IP addresses to itself, which protocol at the Network layer does the host use?

ICMP

RARP

ARPA

TCP

IPX

Question 7 of 25

Question 8 of 25

8. Which protocol works at the Internet layer and provides a connection service between hosts?

TCP

UDP

ARP

Question 8 of 25

Question 9 of 25

9. How many bytes is an Ethernet address?

Question 9 of 25

Question 10 of 25

10. If a router interface is congested, which protocol in the IP suite is used to tell neighbor routers?

ICMP

TCP

RARP

ARP

Question 10 of 25

Question 11 of 25

11. What is the valid host range the IP address 172.16.10.22 255.255.255.240 is a part of?

172.16.10.16 through 172.16.10.23

172.16.10.1 through 172.16.10.255

172.16.10.20 through 172.16.10.22

172.16.10.17 through 172.16.10.31

172.16.10.17 through 172.16.10.30

Question 11 of 25

Question 12 of 25

12. What range of addresses can be used in the first octet of a Class C address?

203-234

192-223

1-127

129-192

Question 12 of 25

Question 13 of 25

13. Which algorithm is run by link-state routing protocols to calculate the shortest path to destination networks?

DUAL

Dijkstra

Bellman-Ford

Diffie-Hellman

Question 13 of 25

Question 14 of 25

14. Which database or table must be identical on all link-state routers within an area in order to construct an accurate SPF tree?

Neighbor table

Routing table

Adjacency table

Link-state database

Question 14 of 25

Question 15 of 25

15. What are two advantages of using a link-state routing protocol instead of a distance vector routing protocol?

Link-state protocols require less router processor power than distance vector protocols

The topology database eliminates the need for a routing table.

Each router independently determines the route to each network.

After the inital LSP flooding, they generally require less bandwidth to communicate changes in a topology

Question 15 of 25

Question 16 of 25

16. What protocol is used to find the hardware address of a local device?

ARP

ICMP

BootP

RARP

Question 16 of 25

Question 17 of 25

17. What action does a link-state router take immediately upon receipt of an LSP from a neighboring router?

Computes the best path to the destination network

Runs the Bellman-Ford algorithm

Calculates the SPF algorithm

Floods the LSP to neighbors

Question 17 of 25

Question 18 of 25

18. What two statements correctly describe the link state routing process?

Routing loops are prevented by running the Diffusing Update Algorithm (DUAL)

LSPs use the reserved multicast address of 224.0.0.10 to reach neighbors

All routers in the area have link state databases

Each router in the area floods LSPs to all neighbors

Question 18 of 25

Question 19 of 25

19. What two events will cause a link state router to send LSPs to all neighbors?

30 second timer expires

Whenever the network topology changes

Upon initial startup of router or routing protocol

Immediately after the DUAL FSM has built the topology database

Immediately after the Bellman-Ford algorithm has run

Question 19 of 25

Question 20 of 25

20. Refer to the exhibit. What kind of information would be seen in an LSP sent from router JAX to router ATL?

Hop count

Cost of the link

A list of all the routing protocols in use

Uptime of the route

Question 20 of 25

Question 21 of 25

21. What feature do modern link-state protocols provide to minimize processing and memory requirements?

Splitting routing topologies into smaller areas

Strict split horizon rules to reduce routing table entries

Assigning lower process priorities to route calculations

Using update timers to restrict routing updates

Question 21 of 25

Question 22 of 25

22. Which routers will router D receive hello packets?

C only

A, B, C, and E

B and C

A and E

Question 22 of 25

Question 23 of 25

23. What range of addresses can be used in the first octet of a Class B network address?

128-191

129-192

1-127

1-126

128-190

Question 23 of 25

Question 24 of 25

24. Which protocol works at the Transport layer and provides virtual circuits between hosts?

UDP

ARP

TCP

Question 24 of 25

Question 25 of 25

25. Refer to the exhibit. Router B receives a packet with a destination address of 10.16.1.97. What will router B do?

Use the default route

Drop the packet

Forward the packet via the route to 10.16.1.64

Forward the packet via the route to 10.16.1.0

Question 25 of 25

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Maan AliLast Updated: January 29, 2021

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One Comment

Moeen Ashraf says:

August 18, 2020 at 12:44 am

Internet Control Message Protocol (ICMP) is used to send redirects back to an originating router.
. If a router interface is congested, which protocol in the IP suite is used to tell neighbor routers? ICMP is correct answer

CCNA Quiz Online Test Mcqs

CCNA Quiz Online Test Mcqs Questions with Answers

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