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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 features of RIPv1
120
Multicast
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

2. How often are BPDU's sent?
110
0
Packet Header
Ever 2 seconds

3. OSPF will elect a what?
100Mb/s
It combines the advantages of Link-State and Distance vector routing protocols.
Unicast - Multicast - Anycast
Designated Router (DR) and a Back-up designated Router (BDR)

4. Dynamic VLAN is what?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Only topology within their respective area.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
MAC based

5. Admin distance of OSPF?
110
Unspecified
Layers 1 & 2
Plaintext and MD5

6. Admin distance of EIGRP?
120
16
90
Multiple virtual interfaces that are associated with one physical interface

7. What is prefix length?
The Root bridge is the bridge with the lowest bridge ID
Automatically
Null
Aka Subnet mask

8. Admin distance of RIPv2
Automatically
Carry's traffic for multiple VLANS
A layer 3 switch or router
120

9. How often does EIGRP send hellow packets?
Every 5 seconds
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A trunk
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

10. Purpose of a Routing Protocol?
0
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

11. What does the back bone router do?
Connects the different areas
The inverse of a subnet mask.
A combination of Link-state and distance vector
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

12. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
A protocol on how to communicate with other routers
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Loopback
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.

13. An autonomous system could also be referred to as what?
A permit statement
DROTHER
Domain
1.) Enter the Routing Manually 2.) Use Dymamic Routing

14. The time delay for a router to match a network change?
Every 30 minutes by default
Convergence
The lower MAC address
Every 5 seconds

15. What type of algorithm does RIP use?
Distance Vector
Domain
...
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. What is the Wildcard mask
The inverse of a subnet mask.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Select the routing protocol - then specify the network.
Susceptible to routing loops

17. How do you configure a sub interface?
32768
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
Unspecified
Different Autonomous Systems

18. What distant vector protocols exhibit classless behavior?
Six equal cost paths
224.0.0.5
Test Firsts/ Routes Second
RIPv2 and EIGRP

19. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
120
Associating the network address with a local DLCI.
The lower MAC address
It combines the advantages of Link-State and Distance vector routing protocols.

20. What is OSPF multicast address?
224.0.0.5
Six equal cost paths
Packets are processed before they are routed to an outbound interface.
TRUE

21. In regards to troubleshooting OSPF what should you check?
Adjacency
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
By DLCI's
TRUE

22. Problem with RIP
100Mb/s
Susceptible to routing loops
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
2^n

23. What do area's do?
Dijkstra's Algorithm
Reduce the link-state database and routing table
A permit statement
Multiple virtual interfaces that are associated with one physical interface

24. Admin distance of a connected Network?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
0
1
Packets are processed before they are routed to an outbound interface.

25. What are the major components of OSPF troubleshooting?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
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.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

26. Routing protocol is what?
0
0
Packets are processed before they are routed to an outbound interface.
A protocol on how to communicate with other routers

27. Who designed OSPF?
Determines the cost which is the bandwidth
Reduce the link-state database and routing table
IETF
Designated Router (DR) and a Back-up designated Router (BDR)

28. Describe a Inbound ACL
No
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Packets are processed before they are routed to an outbound interface.
The Root bridge is the bridge with the lowest bridge ID

29. What Layer does Frame Relay operate at?
The Root bridge is the bridge with the lowest bridge ID
Layers 1 & 2
...
15.....16 hops and the interface is down

30. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
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

31. How does an Extended ACL work?
16
By DLCI's
Checks the source and destination address then permits or denies specific protocols
224.0.0.5

32. What are non designated routers called?
Advance Distance Vector
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
By DLCI's
DROTHER

33. How often does a router send link-state advertisements?
Every 30 minutes by default
For line vty 0 4
TRUE
Propagation of partial updates that are sent only to those routers that the changes affect.

34. The advantages of VLSM
Maximizing address efficiency - organization - summarization
Multiple virtual interfaces that are associated with one physical interface
Only with Cisco IOS software release 12.3 (2) T
Inter-VLAN routing

35. In frame relay What is Inverse Arp
Disable auto summarization
Convergence
Associating the network address with a local DLCI.
Plaintext and MD5

36. Spanning-Tree cost of 100
MD5 and you have to enable it if you want to use it.
10Mb/s
120
IETF

37. How does an outbound ACL work?
Anycast
Routes First/ Tests second
Link-State
Associating the network address with a local DLCI.

38. Nonbackbone - internal routers are aware of what topology
110
Only topology within their respective area.
Reduce the link-state database and routing table
Because a loopback interface is always active and cannot be in a down state like a real interface can.

39. What are two OSPF authentication methods?
Plaintext and MD5
Dijkstra's Algorithm
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Adjacency

40. OSPF routes packets within a single?
Dijkstra's Algorithm
Autonomous System
IP
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

41. Problem with static routes
Associating the network address with a local DLCI.
Forces protocols to behave as if they were classless
Not scalable - hard to maintain as the network grows
Distance Vector

42. Describe an Outbound ACL
Checks the source address and then permits or denies the entire protocol suite
Area Border Router
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

43. What is the spilt horizon rule?
The Root bridge is the bridge with the lowest bridge ID
Every 10 seconds
2^n
It is never useful to send information about a route back in the direction from which the original info came.

44. How often are LMI's sent out?
Every 10 Seconds
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Disable auto summarization

45. VTP Client Mode does what?

46. Break down the word Link-State

47. For an adjacency to occur what do the routers have to agree on?
0
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
IETF
90

48. How are Frame Relay Circuits identified?

49. In Link state terminology - What is a link?
A link is an interface on a router
It combines the advantages of Link-State and Distance vector routing protocols.
Select the routing protocol - then specify the network.
Scalable and fast convergence

50. By default OSPF uses what type of authentication?
Null
Dijkstra's Algorithm
Plaintext and MD5
Only topology within their respective area.