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. Problem with RIP
Susceptible to routing loops
Data Link Connection Identifier
90
Different Autonomous Systems

2. What is ::1
Packet Header
Loopback
Only with Cisco IOS software release 12.3 (2) T
View

3. For a VLAN to span across multiple switches What is required?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Checks the source and destination address then permits or denies specific protocols
A trunk

4. When do you use Access-Class
For line vty 0 4
2^n
Disable auto summarization
Multicast

5. What two things need to be done to enable dynamic routing?
Every 30 minutes by default
Select the routing protocol - then specify the network.
Area Border Router
224.0.0.10

6. What is an ABR
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Area Border Router
MAC based
A group of end stations with a common set of requirements - independent of their physical location

7. What are the major components of OSPF troubleshooting?
Private: link local
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Only with Cisco IOS software release 12.3 (2) T
Each router builds a map of the network and determines the shortest path to every network.

8. In Link state terminology - What is a link?
The Diffusing Update Algorithm (DUAL)
MD5 and you have to enable it if you want to use it.
A link is an interface on a router
Determines the cost which is the bandwidth

9. Every ACL will need what?
Every 30 minutes by default
Only topology within their respective area.
20 seconds: 10 missed BPDU's
A permit statement

10. What type of algorithm does OSPF & IS-IS use?
Each router builds a map of the network and determines the shortest path to every network.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Telnet connectivity - authentication and extended ACLs
Link-State

11. The no auto-summary command does what?
1Gb/s
Carry's traffic for multiple VLANS
Different Autonomous Systems
Forces protocols to behave as if they were classless

12. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
The lower MAC address
Only topology within their respective area.
Reduce the link-state database and routing table
Null

13. What does partial refer to?
Bandwidth & Delay
The update only includes info about the route change
Scalable and fast convergence
Unspecified

14. What does the back bone router do?
Advance Distance Vector
224.0.0.5
Connects the different areas
Only with Cisco IOS software release 12.3 (2) T

15. How does an Extended ACL work?
Packet Header
Checks the source and destination address then permits or denies specific protocols
TRUE
RIPv2 & EIGRP

16. VTP Transparent Mode does what?

17. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Every 10 Seconds
Aka Subnet mask
It is never useful to send information about a route back in the direction from which the original info came.
16

18. Describe an Outbound ACL
MD5 and you have to enable it if you want to use it.
Unicast - Multicast - Anycast
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
TRUE

19. Why is EIGRP considered a Hybrid routing protocol?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
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.
Every 30 Seconds
It combines the advantages of Link-State and Distance vector routing protocols.

20. Classful Protocols summarize
Advertised Distance & Feasible distance
Disable auto summarization
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Automatically

21. What Layer does Frame Relay operate at?
Select the routing protocol - then specify the network.
Layers 1 & 2
4 times the hello interval
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

22. What does the DR do?
Port based
Plaintext and MD5
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
Updates all DROTHER Routers when a change occurs

23. Why is this done?
A link is an interface on a router
Test Firsts/ Routes Second
Convergence
To reduce OSPF traffic

24. What does a trunk do?

25. What is ::
IETF
Unspecified
4
100Mb/s

26. What is the default for equal cost paths for load balancing with OSPF?
Every 5 seconds
It combines the advantages of Link-State and Distance vector routing protocols.
Only with Cisco IOS software release 12.3 (2) T
4

27. How long is the dead interval
Routes First/ Tests second
Unicast - Multicast - Anycast
Every 5 seconds
4 times the hello interval

28. Formula for determining hosts
2^n-2
It is the signaling standard that maintains connection and statues between the DCE and DTE
The Root bridge is the bridge with the lowest bridge ID
4

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

30. By default OSPF uses what type of authentication?
Null
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
No
RIPv2 and EIGRP

31. With OSPF - there must always be a area......
2^n-2
0
Every 5 seconds
20 seconds: 10 missed BPDU's

32. The time delay for a router to match a network change?
Connects the different areas
Packet Header
4
Convergence

33. What is passing VLAN traffic to another called?
Inter-VLAN routing
Packets are processed before they are routed to an outbound interface.
Every 10 Seconds
Connects the different areas

34. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
TRUE
Determines the cost which is the bandwidth
Individual or group IP's

35. Purpose of a Routing Protocol?
Cisco - ANSI - Q.933A
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Every 10 Seconds
It is the signaling standard that maintains connection and statues between the DCE and DTE

36. What three types of IPv6 address types are there?
The lower MAC address
0
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Unicast - Multicast - Anycast

37. What is the dead interval
Reduce the link-state database and routing table
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Distance Vector
Carry's traffic for multiple VLANS

38. With ACL's where does the router extract information
Susceptible to routing loops
Data Link Connection Identifier
Designated Router (DR) and a Back-up designated Router (BDR)
Packet Header

39. VTP Client Mode does what?

40. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Only topology within their respective area.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

41. What are the three LMI standards
Determines the cost which is the bandwidth
Cisco - ANSI - Q.933A
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
A backbone area...Also known as Area 0

42. For an adjacency to occur what do the routers have to agree on?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
The Diffusing Update Algorithm (DUAL)
Every 30 Seconds
1

43. What is prefix length?
Aka Subnet mask
Checks the source address and then permits or denies the entire protocol suite
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Because a loopback interface is always active and cannot be in a down state like a real interface can.

44. Wildcard masks filter

45. How does an outbound ACL work?
Link-State
Convergence
Routes First/ Tests second
Forces protocols to behave as if they were classless

46. Explain OSPF

47. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Multicast
Every 5 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.

48. Break down the word Link-State

49. What does EIGRP use to calculate it's metric?
110
Bandwidth & Delay
Private: link local
Plaintext and MD5

50. How does inbound ACL work?
120
Test Firsts/ Routes Second
A backbone area...Also known as Area 0
16