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. Wildcard masks filter

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2. VTP Transparent Mode does what?

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3. Formula for determining Subnets
Every 10 Seconds
It is never useful to send information about a route back in the direction from which the original info came.
Autonomous System
2^n

4. Formula for determining hosts
2^n-2
A layer 3 switch or router
Only topology within their respective area.
30-50 seconds

5. The advantages of VLSM
Maximizing address efficiency - organization - summarization
Each router builds a map of the network and determines the shortest path to every network.
20 seconds: 10 missed BPDU's
Because a loopback interface is always active and cannot be in a down state like a real interface can.

6. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
RIPv2 and EIGRP
TRUE
Plaintext and MD5
2^n

7. What are the three LMI standards
Cisco - ANSI - Q.933A
16
10Mb/s
Private: link local

8. What type of authentication does EIGRP use?
Reduce the link-state database and routing table
MD5 and you have to enable it if you want to use it.
A group of end stations with a common set of requirements - independent of their physical location
Bandwidth & Delay

9. Admin distance of OSPF?
Private: link local
A group of end stations with a common set of requirements - independent of their physical location
Plaintext and MD5
110

10. What does the back bone router do?
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Port based
Connects the different areas

11. What is one to nearest
Every 30 minutes by default
Ever 2 seconds
Only with Cisco IOS software release 12.3 (2) T
Anycast

12. Why is EIGRP considered a Hybrid routing protocol?
Distance Vector
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
It combines the advantages of Link-State and Distance vector routing protocols.
Aka Subnet mask

13. 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
Advance Distance Vector
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
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.

14. What type of algorithm does OSPF & IS-IS use?
Link-State
DROTHER
Unspecified
Propagation of partial updates that are sent only to those routers that the changes affect.

15. For an adjacency to occur what do the routers have to agree on?
Adjacency
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
DROTHER
IP

16. What is prefix length?
Unspecified
Aka Subnet mask
4 times the hello interval
15.....16 hops and the interface is down

17. Dynamic ACL's are dependent on what?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Different Autonomous Systems
Inter-VLAN routing
Telnet connectivity - authentication and extended ACLs

18. Example of a Routed Protocol?
Individual or group IP's
Every 30 minutes by default
IP
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

19. Routers are used for what?
To select the best path to the destination
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A permit statement
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

20. In Link state terminology - What is a link?

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21. Problem with RIP
Susceptible to routing loops
Between areas?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface

22. What is ::
Unspecified
Susceptible to routing loops
Link-State
Null

23. Who designed OSPF?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
IETF
DROTHER
Susceptible to routing loops

24. Explain how routing loops occur with RIP?
Autonomous System
Multiple virtual interfaces that are associated with one physical interface
A trunk
...

25. With OSPF - there must always be a area......
IP
Every 10 Seconds
0
Port based

26. When placing ACL's in the Network...Do what?

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27. How does EIGRP work with regards to Load Balancing
...
Not scalable - hard to maintain as the network grows
Supports both unequal metric load balancing and equal metric balancing.
DROTHER

28. How does Link-State work?
Forces protocols to behave as if they were classless
Susceptible to routing loops
Each router builds a map of the network and determines the shortest path to every network.
Because a loopback interface is always active and cannot be in a down state like a real interface can.

29. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
20 seconds: 10 missed BPDU's
No

30. What does DLCI stand for?
Data Link Connection Identifier
1
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
A group of end stations with a common set of requirements - independent of their physical location

31. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Multiple virtual interfaces that are associated with one physical interface
View
Unspecified
Advance Distance Vector

32. What is the spilt horizon rule?
Multiple virtual interfaces that are associated with one physical interface
A layer 3 switch or router
It is never useful to send information about a route back in the direction from which the original info came.
Supports both unequal metric load balancing and equal metric balancing.

33. How do you configure OSPF
20 seconds: 10 missed BPDU's
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
90
32768

34. The no auto-summary command does what?
RIPv2 & EIGRP
Domain
Forces protocols to behave as if they were classless
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

35. Nonbackbone - internal routers are aware of what topology
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Only topology within their respective area.
224.0.0.10
Supports both unequal metric load balancing and equal metric balancing.

36. With ACL's where does the router extract information
Packet Header
A protocol on how to communicate with other routers
One ACL per protocol - One ACL per direction - Once ACL per interface
Every 10 seconds

37. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
It is the signaling standard that maintains connection and statues between the DCE and DTE
Only with Cisco IOS software release 12.3 (2) T
Every 5 seconds

38. Spanning-Tree cost of 19
A trunk
Anycast
100Mb/s
Determines the cost which is the bandwidth

39. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
...
Every 30 minutes by default
Automatically

40. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
It is the signaling standard that maintains connection and statues between the DCE and DTE
One ACL per protocol - One ACL per direction - Once ACL per interface
Determines the cost which is the bandwidth

41. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
0
Disable auto summarization
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.
To reduce OSPF traffic

42. What Layer does Frame Relay operate at?
Make sure trunking is established. Ensure that dot1q encapsulation is set - and then for each subinterface do this encapsulation dot1Q 2 where 2 is the VLAN associated with that interface
Layers 1 & 2
Bandwidth & Delay
Cisco - ANSI - Q.933A

43. OSPF routes packets within a single?
Convergence
The inverse of a subnet mask.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Autonomous System

44. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
16
Carry's traffic for multiple VLANS
Individual or group IP's

45. What is the default load balancing for RIP
4
Designated Router (DR) and a Back-up designated Router (BDR)
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Plaintext and MD5

46. What does the DR do?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
It combines the advantages of Link-State and Distance vector routing protocols.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Updates all DROTHER Routers when a change occurs

47. What is the dead interval
Carry's traffic for multiple VLANS
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
One ACL per protocol - One ACL per direction - Once ACL per interface
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

48. What is ::1
Cisco - ANSI - Q.933A
Packet Header
Loopback
EIGRP - OSPF - RIP

49. How many hops are allowed with RIP?
It is never useful to send information about a route back in the direction from which the original info came.
15.....16 hops and the interface is down
0
4 times the hello interval

50. Dynamic VLAN is what?
Test Firsts/ Routes Second
MAC based
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Propagation of partial updates that are sent only to those routers that the changes affect.