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. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Autonomous System
120
View

2. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
TRUE
110
16
Each router builds a map of the network and determines the shortest path to every network.

3. VTP Server Mode does what?

4. What is a VLAN
A group of end stations with a common set of requirements - independent of their physical location
Advance Distance Vector
The update only includes info about the route change
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

5. What is one to nearest
4
Anycast
Each router builds a map of the network and determines the shortest path to every network.
Distance Vector

6. The time delay for a router to match a network change?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Loopback
Convergence
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

7. How many hops are allowed with RIP?
It combines the advantages of Link-State and Distance vector routing protocols.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
1
15.....16 hops and the interface is down

8. Rip is capable of load balancing over as many as?
Domain
Six equal cost paths
No
Ever 2 seconds

9. Nonbackbone - internal routers are aware of what topology
Adjacency
The Root bridge is the bridge with the lowest bridge ID
Only topology within their respective area.
Six equal cost paths

10. 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.
110
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
Between areas?

11. Example of a Routed Protocol?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
IP
A layer 3 switch or router
Multiple virtual interfaces that are associated with one physical interface

12. How often are LMI's sent out?
Every 10 Seconds
Link-State
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Every 30 minutes by default

13. Benefits of OSPF?
Determines the cost which is the bandwidth
A protocol on how to communicate with other routers
Scalable and fast convergence
A combination of Link-state and distance vector

14. VTP Transparent Mode does what?

15. By default OSPF uses what type of authentication?
Packets are processed before they are routed to an outbound interface.
Null
Disable auto summarization
Packet Header

16. How does an Extended ACL work?
Inter-VLAN routing
Telnet connectivity - authentication and extended ACLs
Susceptible to routing loops
Checks the source and destination address then permits or denies specific protocols

17. Advance Distance Vector or Hybrid uses what?
0
Anycast
A combination of Link-state and distance vector
Test Firsts/ Routes Second

18. Why is EIGRP considered a Hybrid routing protocol?
Every 10 Seconds
Link-State
MD5 and you have to enable it if you want to use it.
It combines the advantages of Link-State and Distance vector routing protocols.

19. Routers are used for what?
To select the best path to the destination
Packet Header
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Anycast

20. How often are BPDU's sent?
A protocol on how to communicate with other routers
10Mb/s
Ever 2 seconds
Area Border Router

21. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Multiple virtual interfaces that are associated with one physical interface
Scalable and fast convergence
Updates all DROTHER Routers when a change occurs
TRUE

22. Admin distance of RIPv2
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Every 10 Seconds
It combines the advantages of Link-State and Distance vector routing protocols.
120

23. Spanning-Tree cost of 100
10Mb/s
Every 30 Seconds
To reduce OSPF traffic
2^n

24. How does an outbound ACL work?
Six equal cost paths
Supports both unequal metric load balancing and equal metric balancing.
Routes First/ Tests second
110

25. Purpose of a Routing Protocol?
Connects the different areas
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Packet Header
30-50 seconds

26. What is the dead interval
Match on all routers or it will not work
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
It is never useful to send information about a route back in the direction from which the original info came.
MD5 and you have to enable it if you want to use it.

27. What does a trunk do?

28. What is ::
30-50 seconds
...
Unspecified
1Gb/s

29. In regards to troubleshooting OSPF what should you check?
0
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
The inverse of a subnet mask.

30. How does the SPF determine the shortest path?
Only with Cisco IOS software release 12.3 (2) T
Determines the cost which is the bandwidth
110
A protocol on how to communicate with other routers

31. Admin distance of OSPF?
224.0.0.5
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
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.
110

32. What are the major components of OSPF troubleshooting?
Anycast
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Cisco - ANSI - Q.933A
IETF

33. A router running EIGRP will store what?
To select the best path to the destination
2^n-2
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
All backup routes for destinations.

34. The AS number must what?
1
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Match on all routers or it will not work
Not scalable - hard to maintain as the network grows

35. How often are periodic updates sent out via RIP
Packets are processed before they are routed to an outbound interface.
Every 30 Seconds
Designated Router (DR) and a Back-up designated Router (BDR)
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

36. How do you configure a sub interface?
Different Autonomous Systems
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
Distance Vector
Bandwidth & Delay

37. Explain how routing loops occur with RIP?
...
The lower MAC address
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Area Border Router

38. What do you need to do if there are discontigous networks with EIGRP?
Not scalable - hard to maintain as the network grows
Routes First/ Tests second
Disable auto summarization
A layer 3 switch or router

39. Example of a Routing Protocol?
Loopback
EIGRP - OSPF - RIP
120
It combines the advantages of Link-State and Distance vector routing protocols.

40. Max_age time for BPDU's

41. With ACL's where does the router extract information
Convergence
Packet Header
Telnet connectivity - authentication and extended ACLs
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

42. What type of algorithm does OSPF & IS-IS use?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Link-State
Port based

43. What are two OSPF authentication methods?
Layers 1 & 2
Unicast - Multicast - Anycast
Plaintext and MD5
0

44. Admin distance of EIGRP?
Routes First/ Tests second
90
Updates all DROTHER Routers when a change occurs
Determines the cost which is the bandwidth

45. OSPF routes packets within a single?
2^n-2
Autonomous System
A permit statement
One ACL per protocol - One ACL per direction - Once ACL per interface

46. The advantages of VLSM
Adjacency
RIPv2 & EIGRP
4
Maximizing address efficiency - organization - summarization

47. What is an Autonomous System?
Distance Vector
Telnet connectivity - authentication and extended ACLs
Between areas?
...

48. How are Frame Relay Circuits identified?

49. In frame relay What is Inverse Arp
Supports both unequal metric load balancing and equal metric balancing.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Associating the network address with a local DLCI.
Make sure you are in interface mode - then use this command ip access-group 1 out/in

50. With OSPF - what must be defined?
100Mb/s
A backbone area...Also known as Area 0
Maximizing address efficiency - organization - summarization
Scalable and fast convergence