Test your basic knowledge |

CCNA

Instructions:

Answer 50 questions in 15 minutes.
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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 type of algorithm does OSPF & IS-IS use?
Link-State
Reduce the link-state database and routing table
The update only includes info about the route change
Updates all DROTHER Routers when a change occurs

2. What three types of IPv6 address types are there?
Private: link local
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
Unicast - Multicast - Anycast
A permit statement

3. Why is this done?
It is the signaling standard that maintains connection and statues between the DCE and DTE
To reduce OSPF traffic
Checks the source and destination address then permits or denies specific protocols
It is never useful to send information about a route back in the direction from which the original info came.

4. Describe features of RIPv1
224.0.0.5
Disable auto summarization
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
To reduce OSPF traffic

5. Exterior Gateway Protocols are designed for use between
Reduce the link-state database and routing table
Only with Cisco IOS software release 12.3 (2) T
Autonomous System
Different Autonomous Systems

6. How does Link-State work?
Every 30 minutes by default
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Each router builds a map of the network and determines the shortest path to every network.

7. What is the dead interval
Adjacency
Checks the source address and then permits or denies the entire protocol suite
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
110

8. What Layer does Frame Relay operate at?
1
Layers 1 & 2
Scalable and fast convergence
2^n-2

9. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
To reduce OSPF traffic
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
90

10. What two things need to be done to enable dynamic routing?
Associating the network address with a local DLCI.
Multicast
1
Select the routing protocol - then specify the network.

11. Can you delete individual entries in a specific ACL?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Only with Cisco IOS software release 12.3 (2) T
It is the signaling standard that maintains connection and statues between the DCE and DTE

12. How often does EIGRP send hellow packets?
Supports both unequal metric load balancing and equal metric balancing.
Every 5 seconds
Aka Subnet mask
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

13. Dynamic ACL's are dependent on what?
Dijkstra's Algorithm
A permit statement
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.
Telnet connectivity - authentication and extended ACLs

14. Benefits of OSPF?
1Gb/s
4
Scalable and fast convergence
MD5 and you have to enable it if you want to use it.

15. Admin distance of a connected Network?
To reduce OSPF traffic
0
Connects the different areas
Every 30 minutes by default

16. How often are LMI's sent out?
A trunk
Every 10 Seconds
Adjacency
It is the signaling standard that maintains connection and statues between the DCE and DTE

17. In frame relay What is Inverse Arp
Test Firsts/ Routes Second
Cisco - ANSI - Q.933A
Plaintext and MD5
Associating the network address with a local DLCI.

18. How often does a router send link-state advertisements?
Updates all DROTHER Routers when a change occurs
Every 30 minutes by default
Link-State
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

19. What is prefix length?
Area Border Router
Connects the different areas
Aka Subnet mask
Unicast - Multicast - Anycast

20. Admin distance of OSPF?
110
16
All backup routes for destinations.
Inter-VLAN routing

21. How often are periodic updates sent out via RIP
2^n
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Every 30 Seconds
A protocol on how to communicate with other routers

22. What are two statements that are true of IPv6 address representation?
IP
It is the signaling standard that maintains connection and statues between the DCE and DTE
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

23. Formula for determining Subnets
2^n
Telnet connectivity - authentication and extended ACLs
4 times the hello interval
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

24. What is passing VLAN traffic to another called?
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
Six equal cost paths
Unspecified
Inter-VLAN routing

25. For an adjacency to occur what do the routers have to agree on?
Area Border Router
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Port based
A combination of Link-state and distance vector

26. Can a Router exchange routing information if they are using different Routing Protocols?
No
It combines the advantages of Link-State and Distance vector routing protocols.
...
2^n-2

27. What is the Wildcard mask
Bandwidth & Delay
Link-State
Cisco - ANSI - Q.933A
The inverse of a subnet mask.

28. What is a VLAN
For line vty 0 4
RIPv2 & EIGRP
A group of end stations with a common set of requirements - independent of their physical location
IETF

29. What is the default Bridge priority?
Associating the network address with a local DLCI.
32768
Designated Router (DR) and a Back-up designated Router (BDR)
All backup routes for destinations.

30. What are the major components of OSPF troubleshooting?
Inter-VLAN routing
Data Link Connection Identifier
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
20 seconds: 10 missed BPDU's

31. Example of a Routed Protocol?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Data Link Connection Identifier
IP
RIPv2 and EIGRP

32. What does DLCI stand for?
Unicast - Multicast - Anycast
Individual or group IP's
Data Link Connection Identifier
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.

33. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
A group of end stations with a common set of requirements - independent of their physical location
Anycast
Test Firsts/ Routes Second

34. Classful Protocols summarize
It combines the advantages of Link-State and Distance vector routing protocols.
Automatically
Loopback
Test Firsts/ Routes Second

35. VTP Server Mode does what?

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36. Break down the word Link-State

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37. In regards to troubleshooting OSPF what should you check?
Every 10 seconds
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A group of end stations with a common set of requirements - independent of their physical location
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

38. How many hops are allowed with RIP?
Associating the network address with a local DLCI.
Every 30 Seconds
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
15.....16 hops and the interface is down

39. Why is it important to have a loopback address when using OSPF?
30-50 seconds
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.

40. Problem with static routes
Not scalable - hard to maintain as the network grows
Advance Distance Vector
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Area Border Router

41. How is the root bridge determined?
By DLCI's
32768
Advertised Distance & Feasible distance
The Root bridge is the bridge with the lowest bridge ID

42. What is an Autonomous System?
...
Autonomous System
RIPv2 & EIGRP
A protocol on how to communicate with other routers

43. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
16
Connects the different areas
Every 5 seconds

44. Routers are used for what?
A trunk
To select the best path to the destination
Multicast
A backbone area...Also known as Area 0

45. Explain how routing loops occur with RIP?
...
Checks the source address and then permits or denies the entire protocol suite
Domain
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

46. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Telnet connectivity - authentication and extended ACLs
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Adjacency

47. What does the back bone router do?
It combines the advantages of Link-State and Distance vector routing protocols.
224.0.0.10
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Connects the different areas

48. Rip is capable of load balancing over as many as?
Individual or group IP's
Six equal cost paths
A group of end stations with a common set of requirements - independent of their physical location
DROTHER

49. Admin distance of EIGRP?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
90
Forces protocols to behave as if they were classless

50. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
10Mb/s
TRUE
A permit statement
Different Autonomous Systems