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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. What is ::1
Connects the different areas
Loopback
100Mb/s
Individual or group IP's

2. What two things need to be done to enable dynamic routing?
Autonomous System
32768
Select the routing protocol - then specify the network.
Each router builds a map of the network and determines the shortest path to every network.

3. Why is it important to have a loopback address when using OSPF?
Select the routing protocol - then specify the network.
Match on all routers or it will not work
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Plaintext and MD5

4. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
Plaintext and MD5
A protocol on how to communicate with other routers
Autonomous System

5. Admin distance of OSPF?
Every 30 Seconds
RIPv2 and EIGRP
110
Every 10 Seconds

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

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7. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
Ever 2 seconds
Every 10 seconds
224.0.0.10

8. What is a VLAN
Match on all routers or it will not work
Unicast - Multicast - Anycast
...
A group of end stations with a common set of requirements - independent of their physical location

9. What is the multicast address for EIGRP?
...
Each router builds a map of the network and determines the shortest path to every network.
Loopback
224.0.0.10

10. How does EIGRP work with regards to Load Balancing
4
Ever 2 seconds
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Supports both unequal metric load balancing and equal metric balancing.

11. What two classless protocols act classful by default?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
RIPv2 & EIGRP
Only topology within their respective area.
16

12. What type of algorithm does RIP use?
Distance Vector
It is the signaling standard that maintains connection and statues between the DCE and DTE
Multiple virtual interfaces that are associated with one physical interface
Convergence

13. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
It is never useful to send information about a route back in the direction from which the original info came.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

14. Benefits of OSPF?
The update only includes info about the route change
Scalable and fast convergence
Every 5 seconds
RIPv2 & EIGRP

15. What two parameters does EIGRP use to determine the best route?
EIGRP - OSPF - RIP
10Mb/s
Every 30 Seconds
Advertised Distance & Feasible distance

16. How long is the dead interval
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
A group of end stations with a common set of requirements - independent of their physical location
4 times the hello interval
Only topology within their respective area.

17. How does an outbound ACL work?
Unspecified
Six equal cost paths
Routes First/ Tests second
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.

18. Formula for determining Subnets
Updates all DROTHER Routers when a change occurs
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
Associating the network address with a local DLCI.
2^n

19. What is the default Bridge priority?
2^n-2
32768
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Only with Cisco IOS software release 12.3 (2) T

20. Who designed OSPF?
RIPv2 and EIGRP
10Mb/s
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.
IETF

21. What are the two ways routers can learn about the destination information?
Propagation of partial updates that are sent only to those routers that the changes affect.
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.
...

22. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
A combination of Link-state and distance vector
Only topology within their respective area.
The lower MAC address
120

23. What does the DR do?
Packet Header
Different Autonomous Systems
IP
Updates all DROTHER Routers when a change occurs

24. With ACL's where does the router extract information
Packet Header
Because a loopback interface is always active and cannot be in a down state like a real interface can.
10Mb/s
Susceptible to routing loops

25. What does a trunk do?

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

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27. What does the back bone router do?
A layer 3 switch or router
Advertised Distance & Feasible distance
Telnet connectivity - authentication and extended ACLs
Connects the different areas

28. An autonomous system could also be referred to as what?
Domain
Routes First/ Tests second
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

29. Normal time for STP convergence
30-50 seconds
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
2^n
A combination of Link-state and distance vector

30. What are two statements that are true of IPv6 address representation?
A permit statement
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Unspecified

31. With OSPF - what must be defined?
The Diffusing Update Algorithm (DUAL)
A backbone area...Also known as Area 0
TRUE
Carry's traffic for multiple VLANS

32. How is an EUI-64 format interface ID created from a 48-Bit MAC address
0
Unicast - Multicast - Anycast
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Packet Header

33. What does partial refer to?
The update only includes info about the route change
Each router builds a map of the network and determines the shortest path to every network.
Because a loopback interface is always active and cannot be in a down state like a real interface can.
All backup routes for destinations.

34. Describe features of RIPv2
32768
10Mb/s
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
View

35. OSPF routes packets within a single?
Autonomous System
Supports both unequal metric load balancing and equal metric balancing.
Advertised Distance & Feasible distance
Inter-VLAN routing

36. How often does a router send link-state advertisements?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Every 30 minutes by default
Maximizing address efficiency - organization - summarization
Ever 2 seconds

37. Classful Protocols summarize
Loopback
Telnet connectivity - authentication and extended ACLs
Automatically
It is never useful to send information about a route back in the direction from which the original info came.

38. Dynamic VLAN is what?
To select the best path to the destination
30-50 seconds
Multiple virtual interfaces that are associated with one physical interface
MAC based

39. Exterior Gateway Protocols are designed for use between
Checks the source and destination address then permits or denies specific protocols
Different Autonomous Systems
1
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

40. How often are OSPF hello packets sent out?
Six equal cost paths
MD5 and you have to enable it if you want to use it.
Every 10 seconds
Autonomous System

41. What type of algorithm does OSPF & IS-IS use?
All backup routes for destinations.
Link-State
Checks the source address and then permits or denies the entire protocol suite
Only topology within their respective area.

42. Example of a Routed Protocol?
IP
Packet Header
Distance Vector
...

43. What is ::
Unspecified
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Telnet connectivity - authentication and extended ACLs

44. In regards to troubleshooting OSPF what should you check?
The inverse of a subnet mask.
Connects the different areas
Each router builds a map of the network and determines the shortest path to every network.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

45. What Layer does Frame Relay operate at?
Adjacency
A layer 3 switch or router
TRUE
Layers 1 & 2

46. For a VLAN to span across multiple switches What is required?
The update only includes info about the route change
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
20 seconds: 10 missed BPDU's
A trunk

47. What distant vector protocols exhibit classless behavior?
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.
RIPv2 and EIGRP
4
Carry's traffic for multiple VLANS

48. The AS number must what?
Area Border Router
Different Autonomous Systems
Six equal cost paths
Match on all routers or it will not work

49. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Plaintext and MD5
No
View

50. VTP Server Mode does what?

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