Test your basic knowledge |

CCNA

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. An OSPF neighbor relationship can also be called what?
Scalable and fast convergence
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Adjacency
Only with Cisco IOS software release 12.3 (2) T

2. Spanning-Tree cost of 100
Between areas?
20 seconds: 10 missed BPDU's
10Mb/s
TRUE

3. Admin distance of a connected Network?
0
Anycast
Port based
The update only includes info about the route change

4. Admin distance of OSPF?
Data Link Connection Identifier
110
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Between areas?

5. In regards to troubleshooting OSPF what should you check?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
To reduce OSPF traffic
Individual or group IP's
Every 5 seconds

6. With OSPF - what must be defined?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Select the routing protocol - then specify the network.
Unspecified
A backbone area...Also known as Area 0

7. What do you need to do if there are discontigous networks with EIGRP?
224.0.0.10
Autonomous System
Different Autonomous Systems
Disable auto summarization

8. VTP Server Mode does what?

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9. How are Frame Relay Circuits identified?

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10. Admin distance of a Static Route?
Bandwidth & Delay
10Mb/s
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
1

11. Every ACL will need what?
Propagation of partial updates that are sent only to those routers that the changes affect.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
A permit statement

12. Static VLAN is what?
Updates all DROTHER Routers when a change occurs
Port based
IP
Susceptible to routing loops

13. Explain OSPF

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14. Example of a Routing Protocol?
EIGRP - OSPF - RIP
It combines the advantages of Link-State and Distance vector routing protocols.
A layer 3 switch or router
Port based

15. What address is FE80:/10
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Private: link local
Domain
The Diffusing Update Algorithm (DUAL)

16. What is the default Bridge priority?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
1
4
32768

17. What does the DR do?
Scalable and fast convergence
Updates all DROTHER Routers when a change occurs
Match on all routers or it will not work
Only with Cisco IOS software release 12.3 (2) T

18. How long is the dead interval
...
1
4 times the hello interval
To select the best path to the destination

19. The AS number must what?
Multiple virtual interfaces that are associated with one physical interface
Every 5 seconds
Match on all routers or it will not work
Between areas?

20. How many hops are allowed with RIP?
R= Rip protocol; You can reach network 192.168.1.0 in two hops. The 120 is the admin distance and the 2 is the metric (hop). and it can be reached via the 10.1.1.2 network.
Routes First/ Tests second
15.....16 hops and the interface is down
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

21. What is the dead interval
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
To reduce OSPF traffic
A backbone area...Also known as Area 0
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

22. What algorithm does EIGRP use?
A protocol on how to communicate with other routers
Packets are processed before they are routed to an outbound interface.
Routes First/ Tests second
The Diffusing Update Algorithm (DUAL)

23. Describe features of RIPv2
A backbone area...Also known as Area 0
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 30 minutes by default
120

24. What is the default load balancing for RIP
4
Area Border Router
Supports both unequal metric load balancing and equal metric balancing.
Null

25. How does an Extended ACL work?
2^n-2
Checks the source and destination address then permits or denies specific protocols
EIGRP - OSPF - RIP
TRUE

26. What is the Shortest Path First algorithm also called?

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27. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
...
...
The lower MAC address
Every 30 minutes by default

28. What is OSPF multicast address?
Individual or group IP's
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
15.....16 hops and the interface is down
224.0.0.5

29. Problem with static routes
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Not scalable - hard to maintain as the network grows
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Inter-VLAN routing

30. What is prefix length?
Aka Subnet mask
Adjacency
MAC based
Data Link Connection Identifier

31. In regards to ACL's What are the three protocols?
...
...
One ACL per protocol - One ACL per direction - Once ACL per interface
110

32. What is the default for equal cost paths for load balancing with OSPF?
EIGRP - OSPF - RIP
20 seconds: 10 missed BPDU's
4
The information regarding that link. This can include the router's IP address - the type of network - the cost of the link - and if there are any neighboring routers on that link.

33. Break down the word Link-State

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34. What type of algorithm does RIP use?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Distance Vector
Connects the different areas
Layers 1 & 2

35. What are non designated routers called?
No
By DLCI's
The inverse of a subnet mask.
DROTHER

36. For an adjacency to occur what do the routers have to agree on?
4
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Reduce the link-state database and routing table
Every 10 seconds

37. Nonbackbone - internal routers are aware of what topology
Every 10 Seconds
Determines the cost which is the bandwidth
Forces protocols to behave as if they were classless
Only topology within their respective area.

38. What is one to nearest
Six equal cost paths
Not scalable - hard to maintain as the network grows
Anycast
2^n-2

39. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
100Mb/s
R= Rip protocol; You can reach network 192.168.1.0 in two hops. The 120 is the admin distance and the 2 is the metric (hop). and it can be reached via the 10.1.1.2 network.
Every 10 Seconds
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

40. Example of a Routed Protocol?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Test Firsts/ Routes Second
It is the signaling standard that maintains connection and statues between the DCE and DTE
IP

41. What three types of IPv6 address types are there?
Unicast - Multicast - Anycast
Determines the cost which is the bandwidth
It is never useful to send information about a route back in the direction from which the original info came.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

42. The no auto-summary command does what?
2^n
4
Forces protocols to behave as if they were classless
Link-State

43. What is an Autonomous System?
...
A protocol on how to communicate with other routers
For line vty 0 4
Connects the different areas

44. Admin distance of EIGRP?
Advance Distance Vector
Because a loopback interface is always active and cannot be in a down state like a real interface can.
90
Every 5 seconds

45. What distant vector protocols exhibit classless behavior?
15.....16 hops and the interface is down
4 times the hello interval
Data Link Connection Identifier
RIPv2 and EIGRP

46. Can a Router exchange routing information if they are using different Routing Protocols?
Packet Header
1Gb/s
To select the best path to the destination
No

47. What is the spilt horizon rule?
Anycast
R= Rip protocol; You can reach network 192.168.1.0 in two hops. The 120 is the admin distance and the 2 is the metric (hop). and it can be reached via the 10.1.1.2 network.
224.0.0.5
It is never useful to send information about a route back in the direction from which the original info came.

48. VTP Client Mode does what?

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49. VTP Transparent Mode does what?

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50. How do you apply the ACL to an interface
0
Layers 1 & 2
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Make sure you are in interface mode - then use this command ip access-group 1 out/in