Test your basic knowledge |

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. Dynamic VLAN is what?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
MAC based
16

2. What are the major components of OSPF troubleshooting?
Plaintext and MD5
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Multiple virtual interfaces that are associated with one physical interface

3. How long is the dead interval
90
Determines the cost which is the bandwidth
4 times the hello interval
224.0.0.10

4. What type of algorithm does RIP use?
Convergence
Distance Vector
Inter-VLAN routing
The Diffusing Update Algorithm (DUAL)

5. What is one to nearest
MD5 and you have to enable it if you want to use it.
90
Anycast
To reduce OSPF traffic

6. What is Frame Relay?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
RIPv2 and EIGRP
Maximizing address efficiency - organization - summarization
A link is an interface on a router

7. How do you configure a sub interface?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
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
Reduce the link-state database and routing table
Unspecified

8. Static VLAN is what?
...
Port based
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
20 seconds: 10 missed BPDU's

9. What does DLCI stand for?
Link-State
...
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.
Data Link Connection Identifier

10. Can a Router exchange routing information if they are using different Routing Protocols?
Aka Subnet mask
1
Port based
No

11. Why is EIGRP considered a Hybrid routing protocol?
4
Updates all DROTHER Routers when a change occurs
It combines the advantages of Link-State and Distance vector routing protocols.
32768

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

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13. Spanning-Tree cost of 19
100Mb/s
Telnet connectivity - authentication and extended ACLs
MAC based
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

14. What are two statements that are true of IPv6 address representation?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Loopback
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Telnet connectivity - authentication and extended ACLs

15. When do you use Access-Class
Port based
Link-State
A link is an interface on a router
For line vty 0 4

16. What is ::
Convergence
Every 30 minutes by default
Unspecified
30-50 seconds

17. What is the default for equal cost paths for load balancing with OSPF?
100Mb/s
Every 10 seconds
4
Different Autonomous Systems

18. An OSPF neighbor relationship can also be called what?
16
Test Firsts/ Routes Second
Autonomous System
Adjacency

19. What is the purpose of LMI
Checks the source and destination address then permits or denies specific protocols
It is the signaling standard that maintains connection and statues between the DCE and DTE
Unspecified
Forces protocols to behave as if they were classless

20. The no auto-summary command does what?
Multiple virtual interfaces that are associated with one physical interface
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Forces protocols to behave as if they were classless
...

21. How does an outbound ACL work?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Routes First/ Tests second
Every 5 seconds
A group of end stations with a common set of requirements - independent of their physical location

22. How often does a router send link-state advertisements?
Every 30 minutes by default
Dijkstra's Algorithm
All backup routes for destinations.
The Diffusing Update Algorithm (DUAL)

23. Describe an Outbound ACL
Determines the cost which is the bandwidth
1
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Private: link local

24. How do you apply the ACL to an interface
Forces protocols to behave as if they were classless
Make sure you are in interface mode - then use this command ip access-group 1 out/in
A layer 3 switch or router
The lower MAC address

25. What is the Wildcard mask
2^n
The inverse of a subnet mask.
It is the signaling standard that maintains connection and statues between the DCE and DTE
Select the routing protocol - then specify the network.

26. Exterior Gateway Protocols are designed for use between
It is never useful to send information about a route back in the direction from which the original info came.
Different Autonomous Systems
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.
Six equal cost paths

27. VTP Client Mode does what?

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28. For an adjacency to occur what do the routers have to agree on?
15.....16 hops and the interface is down
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Convergence
0

29. When placing ACL's in the Network...Do what?

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30. Classful Protocols summarize
Scalable and fast convergence
110
Automatically
10Mb/s

31. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Each router builds a map of the network and determines the shortest path to every network.
View
Different Autonomous Systems

32. What is needed to pass traffic from one VLAN to another?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Checks the source address and then permits or denies the entire protocol suite
A layer 3 switch or router
1.) Enter the Routing Manually 2.) Use Dymamic Routing

33. What is prefix length?
Forces protocols to behave as if they were classless
0
Aka Subnet mask
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.

34. What are subinterfaces?
4 times the hello interval
One ACL per protocol - One ACL per direction - Once ACL per interface
Every 10 seconds
Multiple virtual interfaces that are associated with one physical interface

35. Normal time for STP convergence
Susceptible to routing loops
Only topology within their respective area.
Automatically
30-50 seconds

36. Why is this done?
Checks the source address and then permits or denies the entire protocol suite
Updates all DROTHER Routers when a change occurs
To reduce OSPF traffic
100Mb/s

37. With OSPF - what must be defined?
A backbone area...Also known as Area 0
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Adjacency
Scalable and fast convergence

38. Routing protocol is what?
Every 30 Seconds
A protocol on how to communicate with other routers
Susceptible to routing loops
To reduce OSPF traffic

39. For a VLAN to span across multiple switches What is required?
Automatically
Distance Vector
A trunk
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.

40. Problem with static routes
Every 10 Seconds
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.
Port based
Not scalable - hard to maintain as the network grows

41. What distant vector protocols exhibit classless behavior?
Cisco - ANSI - Q.933A
Different Autonomous Systems
RIPv2 and EIGRP
The update only includes info about the route change

42. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Only with Cisco IOS software release 12.3 (2) T
1.) Enter the Routing Manually 2.) Use Dymamic Routing
The lower MAC address
It is the signaling standard that maintains connection and statues between the DCE and DTE

43. Nonbackbone - internal routers are aware of what topology
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Reduce the link-state database and routing table
Layers 1 & 2
Only topology within their respective area.

44. How does inbound ACL work?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Test Firsts/ Routes Second
Every 30 minutes by default
DROTHER

45. Admin distance of EIGRP?
Routes First/ Tests second
90
One ACL per protocol - One ACL per direction - Once ACL per interface
Individual or group IP's

46. Rip is capable of load balancing over as many as?
4 times the hello interval
No
Six equal cost paths
Advertised Distance & Feasible distance

47. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Advertised Distance & Feasible distance
By DLCI's
A link is an interface on a router
TRUE

48. The advantages of VLSM
The update only includes info about the route change
Only with Cisco IOS software release 12.3 (2) T
A trunk
Maximizing address efficiency - organization - summarization

49. Admin distance of OSPF?
Carry's traffic for multiple VLANS
Port based
Propagation of partial updates that are sent only to those routers that the changes affect.
110

50. Purpose of a Routing Protocol?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
DROTHER
Port based
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.