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. Describe a Inbound ACL
A group of end stations with a common set of requirements - independent of their physical location
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Adjacency
Packets are processed before they are routed to an outbound interface.

2. Describe features of RIPv1
Autonomous System
Test Firsts/ Routes Second
Domain
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

3. Summarization of network information usually occurs where?
Only topology within their respective area.
Between areas?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

4. What distant vector protocols exhibit classless behavior?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Aka Subnet mask
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.
RIPv2 and EIGRP

5. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
4
Routes First/ Tests second

6. With OSPF - what must be defined?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Select the routing protocol - then specify the network.
A backbone area...Also known as Area 0
Connects the different areas

7. What are the three LMI standards
Convergence
Cisco - ANSI - Q.933A
Bandwidth & Delay
A protocol on how to communicate with other routers

8. For a VLAN to span across multiple switches What is required?
A trunk
To select the best path to the destination
4 times the hello interval
Packets are processed before they are routed to an outbound interface.

9. With ACL's where does the router extract information
Packet Header
Area Border Router
The inverse of a subnet mask.
2^n

10. What do you need to do if there are discontigous networks with EIGRP?
Scalable and fast convergence
Cisco - ANSI - Q.933A
Disable auto summarization
DROTHER

11. What two things need to be done to enable dynamic routing?
A link is an interface on a router
DROTHER
Select the routing protocol - then specify the network.
It is never useful to send information about a route back in the direction from which the original info came.

12. What Layer does Frame Relay operate at?
Individual or group IP's
Layers 1 & 2
Every 10 seconds
4

13. What is one to nearest
120
RIPv2 & EIGRP
Advertised Distance & Feasible distance
Anycast

14. What are the major components of OSPF troubleshooting?
For line vty 0 4
The Diffusing Update Algorithm (DUAL)
TRUE
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

15. Example of a Routing Protocol?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
EIGRP - OSPF - RIP
Link-State
The update only includes info about the route change

16. What is the Wildcard mask
It is the signaling standard that maintains connection and statues between the DCE and DTE
Individual or group IP's
The inverse of a subnet mask.
10Mb/s

17. A router running EIGRP will store what?
Select the routing protocol - then specify the network.
All backup routes for destinations.
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.
EIGRP - OSPF - RIP

18. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
The Root bridge is the bridge with the lowest bridge ID
The Diffusing Update Algorithm (DUAL)
16
10Mb/s

19. What are two OSPF authentication methods?
One ACL per protocol - One ACL per direction - Once ACL per interface
...
Plaintext and MD5
A group of end stations with a common set of requirements - independent of their physical location

20. Explain how routing loops occur with RIP?
120
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
...
16

21. Spanning-Tree cost of 100
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
10Mb/s
...
Private: link local

22. Formula for determining Subnets
TRUE
2^n
0
Anycast

23. 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
Adjacency
A protocol on how to communicate with other routers
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

24. In regards to ACL's What are the three protocols?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Dijkstra's Algorithm
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
One ACL per protocol - One ACL per direction - Once ACL per interface

25. Max_age time for BPDU's

26. What is a VLAN
Packets are processed before they are routed to an outbound interface.
Associating the network address with a local DLCI.
A group of end stations with a common set of requirements - independent of their physical location
224.0.0.5

27. VTP Server Mode does what?

28. Who designed OSPF?
One ACL per protocol - One ACL per direction - Once ACL per interface
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
15.....16 hops and the interface is down
IETF

29. Explain OSPF

30. Why is this done?
Select the routing protocol - then specify the network.
Convergence
To reduce OSPF traffic
Plaintext and MD5

31. How does an Extended ACL work?
Checks the source and destination address then permits or denies specific protocols
Multiple virtual interfaces that are associated with one physical interface
1Gb/s
Between areas?

32. What is an Autonomous System?
Each router builds a map of the network and determines the shortest path to every network.
Every 10 seconds
Every 5 seconds
...

33. Why is EIGRP considered a Hybrid routing protocol?
It combines the advantages of Link-State and Distance vector routing protocols.
Packets are processed before they are routed to an outbound interface.
Test Firsts/ Routes Second
1.) Enter the Routing Manually 2.) Use Dymamic Routing

34. How often does a router send link-state advertisements?
120
The inverse of a subnet mask.
Connects the different areas
Every 30 minutes by default

35. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
Maximizing address efficiency - organization - summarization
Layers 1 & 2
By DLCI's

36. What is an ABR
Disable auto summarization
...
Area Border Router
Private: link local

37. Wildcard masks filter

38. How are Frame Relay Circuits identified?

39. The no auto-summary command does what?
Forces protocols to behave as if they were classless
Data Link Connection Identifier
224.0.0.10
Dijkstra's Algorithm

40. What is ::
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Unspecified
Convergence
A trunk

41. Routing protocol is what?
224.0.0.5
TRUE
A protocol on how to communicate with other routers
Individual or group IP's

42. What are the two ways routers can learn about the destination information?
IETF
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Private: link local
1.) Enter the Routing Manually 2.) Use Dymamic Routing

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

44. What three types of IPv6 address types are there?
The inverse of a subnet mask.
90
Connects the different areas
Unicast - Multicast - Anycast

45. Spanning-Tree coast of 4
To reduce OSPF traffic
224.0.0.10
Only with Cisco IOS software release 12.3 (2) T
1Gb/s

46. An OSPF neighbor relationship can also be called what?
Private: link local
Carry's traffic for multiple VLANS
Adjacency
MD5 and you have to enable it if you want to use it.

47. Admin distance of OSPF?
To select the best path to the destination
The Diffusing Update Algorithm (DUAL)
110
Every 30 minutes by default

48. What algorithm does EIGRP use?
120
DROTHER
Automatically
The Diffusing Update Algorithm (DUAL)

49. In Link state terminology - What is a link?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Autonomous System
A link is an interface on a router
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

50. What is the multicast address for EIGRP?
RIPv2 and EIGRP
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
224.0.0.10
120