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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 an Outbound ACL
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
1.) Enter the Routing Manually 2.) Use Dymamic Routing
By DLCI's
Reduce the link-state database and routing table

2. How does Link-State work?
Each router builds a map of the network and determines the shortest path to every network.
A backbone area...Also known as Area 0
Loopback
1Gb/s

3. Problem with static routes
4 times the hello interval
Every 30 minutes by default
Every 30 Seconds
Not scalable - hard to maintain as the network grows

4. Spanning-Tree coast of 4
1Gb/s
Six equal cost paths
Propagation of partial updates that are sent only to those routers that the changes affect.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

5. In Link state terminology - What is a link?
A link is an interface on a router
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
...
Because a loopback interface is always active and cannot be in a down state like a real interface can.

6. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
A group of end stations with a common set of requirements - independent of their physical location
Checks the source and destination address then permits or denies specific protocols
Susceptible to routing loops
View

7. What two things need to be done to enable dynamic routing?
A combination of Link-state and distance vector
TRUE
Select the routing protocol - then specify the network.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

8. Describe features of RIPv1
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Every 10 seconds
MAC based
Different Autonomous Systems

9. What is prefix length?
Connects the different areas
1
Only topology within their respective area.
Aka Subnet mask

10. With OSPF - what must be defined?
224.0.0.5
TRUE
4
A backbone area...Also known as Area 0

11. What does partial refer to?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
110
The update only includes info about the route change
A group of end stations with a common set of requirements - independent of their physical location

12. What does EIGRP use to calculate it's metric?
Cisco - ANSI - Q.933A
IP
Convergence
Bandwidth & Delay

13. In Link state terminology - What is a link?

14. How does an outbound ACL work?
One ACL per protocol - One ACL per direction - Once ACL per interface
Multicast
Routes First/ Tests second
Checks the source and destination address then permits or denies specific protocols

15. How many hops are allowed with RIP?
RIPv2 & EIGRP
15.....16 hops and the interface is down
Area Border Router
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

16. Can you delete individual entries in a specific ACL?
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
100Mb/s
The Root bridge is the bridge with the lowest bridge ID

17. Problem with RIP
Susceptible to routing loops
Every 5 seconds
Domain
RIPv2 and EIGRP

18. Can a Router exchange routing information if they are using different Routing Protocols?
A protocol on how to communicate with other routers
Carry's traffic for multiple VLANS
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
No

19. With ACL's where does the router extract information
Individual or group IP's
Match on all routers or it will not work
Packet Header
RIPv2 and EIGRP

20. What does bounded refer to?
Plaintext and MD5
Propagation of partial updates that are sent only to those routers that the changes affect.
Every 30 Seconds
Telnet connectivity - authentication and extended ACLs

21. Why is it important to have a loopback address when using OSPF?
RIPv2 and EIGRP
Not scalable - hard to maintain as the network grows
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Every 5 seconds

22. Nonbackbone - internal routers are aware of what topology
TRUE
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Only topology within their respective area.
IP

23. An autonomous system could also be referred to as what?
The Diffusing Update Algorithm (DUAL)
Domain
Advance Distance Vector
Test Firsts/ Routes Second

24. Admin distance of a Static Route?
Not scalable - hard to maintain as the network grows
1
A protocol on how to communicate with other routers
EIGRP - OSPF - RIP

25. What is one to many?
To select the best path to the destination
Packet Header
Multicast
Not scalable - hard to maintain as the network grows

26. What does a trunk do?

27. The advantages of VLSM
Routes First/ Tests second
Plaintext and MD5
Maximizing address efficiency - organization - summarization
4 times the hello interval

28. What distant vector protocols exhibit classless behavior?
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
Disable auto summarization
Cisco - ANSI - Q.933A
RIPv2 and EIGRP

29. Example of a Routed Protocol?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
No
90
IP

30. What two parameters does EIGRP use to determine the best route?
To reduce OSPF traffic
Advertised Distance & Feasible distance
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Determines the cost which is the bandwidth

31. By default OSPF uses what type of authentication?
Packet Header
Select the routing protocol - then specify the network.
To reduce OSPF traffic
Null

32. What is an ABR
Cisco - ANSI - Q.933A
4
RIPv2 and EIGRP
Area Border Router

33. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Not scalable - hard to maintain as the network grows
TRUE
Aka Subnet mask
Area Border Router

34. What are two statements that are true of IPv6 address representation?
20 seconds: 10 missed BPDU's
MAC based
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Individual or group IP's

35. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Forces protocols to behave as if they were classless
The Root bridge is the bridge with the lowest bridge ID
TRUE
Select the routing protocol - then specify the network.

36. Spanning-Tree cost of 19
No
100Mb/s
Reduce the link-state database and routing table
Select the routing protocol - then specify the network.

37. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Test Firsts/ Routes Second
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
The lower MAC address
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

38. For an adjacency to occur what do the routers have to agree on?
110
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
1
RIPv2 & EIGRP

39. Admin distance of RIPv2
Aka Subnet mask
Make sure you are in interface mode - then use this command ip access-group 1 out/in
120
224.0.0.10

40. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
32768
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
A layer 3 switch or router

41. What is the Shortest Path First algorithm also called?

42. What is the multicast address for EIGRP?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Make sure you are in interface mode - then use this command ip access-group 1 out/in
224.0.0.10
Advance Distance Vector

43. Benefits of OSPF?
Scalable and fast convergence
20 seconds: 10 missed BPDU's
Plaintext and MD5
View

44. What Layer does Frame Relay operate at?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Layers 1 & 2
Maximizing address efficiency - organization - summarization
1

45. Advance Distance Vector or Hybrid uses what?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
A combination of Link-state and distance vector
Test Firsts/ Routes Second
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

46. How often are LMI's sent out?
Six equal cost paths
Connects the different areas
Every 10 Seconds
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

47. Why is this done?
To reduce OSPF traffic
110
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
30-50 seconds

48. How is the root bridge determined?
Distance Vector
1Gb/s
The inverse of a subnet mask.
The Root bridge is the bridge with the lowest bridge ID

49. The time delay for a router to match a network change?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Convergence
Maximizing address efficiency - organization - summarization
Determines the cost which is the bandwidth

50. Break down the word Link-State