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. Admin distance of EIGRP?
90
A combination of Link-state and distance vector
Checks the source and destination address then permits or denies specific protocols
Individual or group IP's

2. What is ::
Unspecified
A trunk
Reduce the link-state database and routing table
For line vty 0 4

3. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
A group of end stations with a common set of requirements - independent of their physical location
Null
0

4. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Convergence
Every 5 seconds
Every 10 seconds

5. VTP Client Mode does what?

6. Dynamic ACL's are dependent on what?
Telnet connectivity - authentication and extended ACLs
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Only with Cisco IOS software release 12.3 (2) T
Advance Distance Vector

7. Why is EIGRP considered a Hybrid routing protocol?
It combines the advantages of Link-State and Distance vector routing protocols.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
The inverse of a subnet mask.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

8. VTP Transparent Mode does what?

9. Problem with RIP
120
4 times the hello interval
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Susceptible to routing loops

10. Wildcard masks filter

11. What are two OSPF authentication methods?
Advance Distance Vector
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Plaintext and MD5
Connects the different areas

12. Spanning-Tree cost of 19
The Diffusing Update Algorithm (DUAL)
100Mb/s
4 times the hello interval
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

13. What is an Autonomous System?
1Gb/s
Ever 2 seconds
...
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.

14. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Convergence
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
To select the best path to the destination
The lower MAC address

15. Explain how routing loops occur with RIP?
Six equal cost paths
...
Individual or group IP's
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. When do you use Access-Class
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.
The Diffusing Update Algorithm (DUAL)
4
For line vty 0 4

17. What is OSPF multicast address?
The Root bridge is the bridge with the lowest bridge ID
0
To select the best path to the destination
224.0.0.5

18. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
4
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

19. How often does EIGRP send hellow packets?
1Gb/s
Aka Subnet mask
16
Every 5 seconds

20. Describe features of RIPv2
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 10 seconds
Advertised Distance & Feasible distance
Checks the source address and then permits or denies the entire protocol suite

21. What is one to many?
110
Multicast
All backup routes for destinations.
Because a loopback interface is always active and cannot be in a down state like a real interface can.

22. How often are BPDU's sent?
32768
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Ever 2 seconds
EIGRP - OSPF - RIP

23. What type of algorithm does EIGRP use?
Advance Distance Vector
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
0
224.0.0.5

24. How do you configure a sub interface?
0
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
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

25. Spanning-Tree cost of 100
10Mb/s
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
4 times the hello interval
It is never useful to send information about a route back in the direction from which the original info came.

26. How does a Standard ACL work?
2^n-2
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
...
Checks the source address and then permits or denies the entire protocol suite

27. In regards to ACL's What are the three protocols?
One ACL per protocol - One ACL per direction - Once ACL per interface
...
Only topology within their respective area.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

28. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
224.0.0.5
Loopback
TRUE
15.....16 hops and the interface is down

29. How do you apply the ACL to an interface
Routes First/ Tests second
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Advance Distance Vector
2^n-2

30. What are the three LMI standards
Six equal cost paths
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Cisco - ANSI - Q.933A
Unicast - Multicast - Anycast

31. What is the default load balancing for RIP
Private: link local
4
Packet Header
Plaintext and MD5

32. Explain OSPF

33. How does EIGRP work with regards to Load Balancing
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
32768
Supports both unequal metric load balancing and equal metric balancing.
Aka Subnet mask

34. What address is FE80:/10
Designated Router (DR) and a Back-up designated Router (BDR)
Private: link local
Every 30 Seconds
Every 5 seconds

35. Example of a Routing Protocol?
Supports both unequal metric load balancing and equal metric balancing.
Advance Distance Vector
EIGRP - OSPF - RIP
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

36. How does an outbound ACL work?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Every 5 seconds
Checks the source address and then permits or denies the entire protocol suite
Routes First/ Tests second

37. Static VLAN is what?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
No
Layers 1 & 2
Port based

38. Formula for determining hosts
Every 30 Seconds
2^n-2
Every 5 seconds
Advertised Distance & Feasible distance

39. How do you configure OSPF
Each router builds a map of the network and determines the shortest path to every network.
Every 5 seconds
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
224.0.0.10

40. Routing protocol is what?
A protocol on how to communicate with other routers
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Dijkstra's Algorithm
Each router builds a map of the network and determines the shortest path to every network.

41. Formula for determining Subnets
Multicast
2^n
Loopback
IETF

42. What is the Wildcard mask
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Designated Router (DR) and a Back-up designated Router (BDR)
The inverse of a subnet mask.
A backbone area...Also known as Area 0

43. Routers are used for what?
Multiple virtual interfaces that are associated with one physical interface
To reduce OSPF traffic
RIPv2 and EIGRP
To select the best path to the destination

44. What does partial refer to?
Bandwidth & Delay
The update only includes info about the route change
Every 30 minutes by default
Match on all routers or it will not work

45. Can you delete individual entries in a specific ACL?
Connects the different areas
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Only with Cisco IOS software release 12.3 (2) T
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

46. Normal time for STP convergence
30-50 seconds
16
IP
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

47. Why is it important to have a loopback address when using OSPF?
Designated Router (DR) and a Back-up designated Router (BDR)
Because a loopback interface is always active and cannot be in a down state like a real interface can.
4
15.....16 hops and the interface is down

48. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Data Link Connection Identifier
IETF
The Root bridge is the bridge with the lowest bridge ID
TRUE

49. What is the purpose of LMI
Loopback
It is the signaling standard that maintains connection and statues between the DCE and DTE
Adjacency
It combines the advantages of Link-State and Distance vector routing protocols.

50. How does inbound ACL work?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Private: link local
Test Firsts/ Routes Second
Cisco - ANSI - Q.933A