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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. Formula for determining Subnets
Forces protocols to behave as if they were classless
A backbone area...Also known as Area 0
Multiple virtual interfaces that are associated with one physical interface
2^n

2. What Layer does Frame Relay operate at?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Data Link Connection Identifier
Layers 1 & 2
Loopback

3. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
TRUE
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
1.) Enter the Routing Manually 2.) Use Dymamic Routing

4. What is ::
Six equal cost paths
1Gb/s
Individual or group IP's
Unspecified

5. Problem with RIP
Multiple virtual interfaces that are associated with one physical interface
Cisco - ANSI - Q.933A
15.....16 hops and the interface is down
Susceptible to routing loops

6. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
A trunk
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
A layer 3 switch or router

7. What are the three LMI standards
...
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
32768
Cisco - ANSI - Q.933A

8. OSPF routes packets within a single?
Packet Header
Connects the different areas
Autonomous System
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

9. An OSPF neighbor relationship can also be called what?
A group of end stations with a common set of requirements - independent of their physical location
Adjacency
RIPv2 and EIGRP
224.0.0.5

10. Dynamic ACL's are dependent on what?
Determines the cost which is the bandwidth
90
To select the best path to the destination
Telnet connectivity - authentication and extended ACLs

11. How is the root bridge determined?
Match on all routers or it will not work
224.0.0.5
The Root bridge is the bridge with the lowest bridge ID
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

12. Dynamic VLAN is what?
Every 30 minutes by default
MAC based
0
Link-State

13. What does the back bone router do?
Every 5 seconds
Packet Header
Connects the different areas
120

14. What two parameters does EIGRP use to determine the best route?
Packets are processed before they are routed to an outbound interface.
Carry's traffic for multiple VLANS
Select the routing protocol - then specify the network.
Advertised Distance & Feasible distance

15. Classful Protocols summarize
MD5 and you have to enable it if you want to use it.
20 seconds: 10 missed BPDU's
Automatically
The Root bridge is the bridge with the lowest bridge ID

16. Spanning-Tree cost of 100
Plaintext and MD5
Multicast
0
10Mb/s

17. Admin distance of RIPv2
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Layers 1 & 2
15.....16 hops and the interface is down
120

18. Max_age time for BPDU's

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19. A router running EIGRP will store what?
Dijkstra's Algorithm
All backup routes for destinations.
The Root bridge is the bridge with the lowest bridge ID
Connects the different areas

20. How do you configure a sub interface?
Six equal cost paths
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
Susceptible to routing loops
EIGRP - OSPF - RIP

21. How are Frame Relay Circuits identified?

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22. The AS number must what?
Link-State
Bandwidth & Delay
Match on all routers or it will not work
TRUE

23. What is passing VLAN traffic to another called?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Inter-VLAN routing
Maximizing address efficiency - organization - summarization

24. When do you use Access-Class
Between areas?
For line vty 0 4
It is the signaling standard that maintains connection and statues between the DCE and DTE
MAC based

25. Static VLAN is what?
The inverse of a subnet mask.
Port based
IP
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

26. What is ::1
Checks the source and destination address then permits or denies specific protocols
0
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Loopback

27. Rip is capable of load balancing over as many as?
15.....16 hops and the interface is down
Six equal cost paths
224.0.0.5
16

28. How often are BPDU's sent?
Ever 2 seconds
Individual or group IP's
Not scalable - hard to maintain as the network grows
90

29. Benefits of OSPF?
1Gb/s
Carry's traffic for multiple VLANS
15.....16 hops and the interface is down
Scalable and fast convergence

30. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
Dijkstra's Algorithm
Maximizing address efficiency - organization - summarization
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

31. Can a Router exchange routing information if they are using different Routing Protocols?
No
It is the signaling standard that maintains connection and statues between the DCE and DTE
Unspecified
Routes First/ Tests second

32. Every ACL will need what?
A permit statement
32768
DROTHER
Only topology within their respective area.

33. How do you apply the ACL to an interface
32768
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Advertised Distance & Feasible distance

34. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Cisco - ANSI - Q.933A
The lower MAC address
It is the signaling standard that maintains connection and statues between the DCE and DTE
IP

35. What does a trunk do?

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36. What does DLCI stand for?
Propagation of partial updates that are sent only to those routers that the changes affect.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
10Mb/s
Data Link Connection Identifier

37. What is the default for equal cost paths for load balancing with OSPF?
Different Autonomous Systems
4
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Every 5 seconds

38. Admin distance of OSPF?
Susceptible to routing loops
Associating the network address with a local DLCI.
The Root bridge is the bridge with the lowest bridge ID
110

39. How does an outbound ACL work?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
110
Bandwidth & Delay
Routes First/ Tests second

40. Admin distance of a Static Route?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
1
DROTHER
To select the best path to the destination

41. Problem with static routes
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Not scalable - hard to maintain as the network grows
Dijkstra's Algorithm
...

42. What is needed to pass traffic from one VLAN to another?
32768
IP
10Mb/s
A layer 3 switch or router

43. How does Link-State work?
Each router builds a map of the network and determines the shortest path to every network.
A group of end stations with a common set of requirements - independent of their physical location
Propagation of partial updates that are sent only to those routers that the changes affect.
Checks the source and destination address then permits or denies specific protocols

44. What does the DR do?
110
...
Updates all DROTHER Routers when a change occurs
A link is an interface on a router

45. For a VLAN to span across multiple switches What is required?
A trunk
Associating the network address with a local DLCI.
224.0.0.5
Every 30 minutes by default

46. In regards to ACL's What are the three protocols?
Advance Distance Vector
One ACL per protocol - One ACL per direction - Once ACL per interface
Checks the source address and then permits or denies the entire protocol suite
Private: link local

47. Explain OSPF

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48. An autonomous system could also be referred to as what?
Disable auto summarization
10Mb/s
Unspecified
Domain

49. Admin distance of a connected Network?
Updates all DROTHER Routers when a change occurs
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
0
Six equal cost paths

50. What is prefix length?
Designated Router (DR) and a Back-up designated Router (BDR)
Anycast
1
Aka Subnet mask