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. VTP Transparent Mode does what?

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2. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
4
Every 5 seconds
Layers 1 & 2

3. Admin distance of OSPF?
100Mb/s
110
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Susceptible to routing loops

4. What is Frame Relay?
One ACL per protocol - One ACL per direction - Once ACL per interface
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Designated Router (DR) and a Back-up designated Router (BDR)
Unicast - Multicast - Anycast

5. Describe a Inbound ACL
Checks the source and destination address then permits or denies specific protocols
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Packets are processed before they are routed to an outbound interface.

6. Classful Protocols summarize
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Automatically
Between areas?
For line vty 0 4

7. How often are LMI's sent out?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
10Mb/s
Individual or group IP's
Every 10 Seconds

8. What is the spilt horizon rule?
16
0
It is never useful to send information about a route back in the direction from which the original info came.
Checks the source and destination address then permits or denies specific protocols

9. Admin distance of a connected Network?
Disable auto summarization
0
It is never useful to send information about a route back in the direction from which the original info came.
Each router builds a map of the network and determines the shortest path to every network.

10. How often are periodic updates sent out via RIP
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
224.0.0.5
Every 30 Seconds
20 seconds: 10 missed BPDU's

11. How often does EIGRP send hellow packets?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
The update only includes info about the route change
Every 5 seconds
20 seconds: 10 missed BPDU's

12. Explain how routing loops occur with RIP?
...
Routes First/ Tests second
DROTHER
A protocol on how to communicate with other routers

13. For a VLAN to span across multiple switches What is required?
1
224.0.0.5
Distance Vector
A trunk

14. By default OSPF uses what type of authentication?
Null
EIGRP - OSPF - RIP
...
Ever 2 seconds

15. Admin distance of EIGRP?
90
A backbone area...Also known as Area 0
The inverse of a subnet mask.
Every 5 seconds

16. What does partial refer to?
Reduce the link-state database and routing table
A combination of Link-state and distance vector
Six equal cost paths
The update only includes info about the route change

17. The advantages of VLSM
Maximizing address efficiency - organization - summarization
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Between areas?
IP

18. What is the purpose of LMI
4
It is the signaling standard that maintains connection and statues between the DCE and DTE
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
TRUE

19. How often are BPDU's sent?
Ever 2 seconds
Aka Subnet mask
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Checks the source address and then permits or denies the entire protocol suite

20. Can you delete individual entries in a specific ACL?
To select the best path to the destination
Only with Cisco IOS software release 12.3 (2) T
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
A combination of Link-state and distance vector

21. What is a VLAN
A group of end stations with a common set of requirements - independent of their physical location
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
Domain
All backup routes for destinations.

22. What do you need to do if there are discontigous networks with EIGRP?
Select the routing protocol - then specify the network.
The inverse of a subnet mask.
Disable auto summarization
Link-State

23. What three types of IPv6 address types are there?
MD5 and you have to enable it if you want to use it.
Area Border Router
Checks the source address and then permits or denies the entire protocol suite
Unicast - Multicast - Anycast

24. Wildcard masks filter

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25. What address is FE80:/10
Advance Distance Vector
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.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Private: link local

26. What is needed to pass traffic from one VLAN to another?
0
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A layer 3 switch or router
By DLCI's

27. What are subinterfaces?
Different Autonomous Systems
View
Multiple virtual interfaces that are associated with one physical interface
IETF

28. How often does a router send link-state advertisements?
Cisco - ANSI - Q.933A
Only with Cisco IOS software release 12.3 (2) T
Every 30 minutes by default
Bandwidth & Delay

29. Formula for determining hosts
Scalable and fast convergence
2^n-2
Plaintext and MD5
Packets are processed before they are routed to an outbound interface.

30. What Layer does Frame Relay operate at?
Layers 1 & 2
The inverse of a subnet mask.
EIGRP - OSPF - RIP
Reduce the link-state database and routing table

31. How long is the dead interval
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Plaintext and MD5
20 seconds: 10 missed BPDU's
4 times the hello interval

32. How many hops are allowed with RIP?
30-50 seconds
Plaintext and MD5
Loopback
15.....16 hops and the interface is down

33. What does the back bone router do?
Connects the different areas
Match on all routers or it will not work
The Root bridge is the bridge with the lowest bridge ID
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

34. What is the default for equal cost paths for load balancing with OSPF?
Convergence
Disable auto summarization
4
MAC based

35. Why is this done?
224.0.0.10
Cisco - ANSI - Q.933A
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
To reduce OSPF traffic

36. How does Link-State work?
The Diffusing Update Algorithm (DUAL)
Plaintext and MD5
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Each router builds a map of the network and determines the shortest path to every network.

37. What type of algorithm does EIGRP use?
Advance Distance Vector
90
Every 10 seconds
...

38. What type of algorithm does RIP use?
Cisco - ANSI - Q.933A
Distance Vector
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
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.

39. Dynamic VLAN is what?
Forces protocols to behave as if they were classless
Susceptible to routing loops
Only with Cisco IOS software release 12.3 (2) T
MAC based

40. How do you apply the ACL to an interface
Plaintext and MD5
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Automatically

41. What is passing VLAN traffic to another called?
30-50 seconds
2^n
32768
Inter-VLAN routing

42. What do area's do?
Aka Subnet mask
Reduce the link-state database and routing table
Every 30 Seconds
The lower MAC address

43. Describe features of RIPv2
120
By DLCI's
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Between areas?

44. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
By DLCI's
10Mb/s
Inter-VLAN routing

45. How does EIGRP work with regards to Load Balancing
A link is an interface on a router
Supports both unequal metric load balancing and equal metric balancing.
It is never useful to send information about a route back in the direction from which the original info came.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

46. Problem with RIP
0
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.
Susceptible to routing loops
Ever 2 seconds

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

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48. What is an ABR
20 seconds: 10 missed BPDU's
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Area Border Router
Every 30 minutes by default

49. 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.
4
The Root bridge is the bridge with the lowest bridge ID
Anycast

50. How are Frame Relay Circuits identified?

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