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. By default OSPF uses what type of authentication?
Every 30 minutes by default
Null
Aka Subnet mask
2^n

2. What are non designated routers called?
DROTHER
Telnet connectivity - authentication and extended ACLs
TRUE
Reduce the link-state database and routing table

3. Routing protocol is what?
A protocol on how to communicate with other routers
A trunk
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
20 seconds: 10 missed BPDU's

4. How often does a router send link-state advertisements?
Autonomous System
Every 30 minutes by default
...
1Gb/s

5. How often are OSPF hello packets sent out?
A permit statement
Every 10 seconds
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Data Link Connection Identifier

6. How often are BPDU's sent?
Not scalable - hard to maintain as the network grows
Port based
Maximizing address efficiency - organization - summarization
Ever 2 seconds

7. What does bounded refer to?
Propagation of partial updates that are sent only to those routers that the changes affect.
224.0.0.5
Scalable and fast convergence
Packet Header

8. What is ::
Bandwidth & Delay
Unspecified
2^n
1

9. The advantages of VLSM
MD5 and you have to enable it if you want to use it.
Maximizing address efficiency - organization - summarization
0
Dijkstra's Algorithm

10. Static VLAN is what?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Bandwidth & Delay
Port based
Autonomous System

11. What are two statements that are true of IPv6 address representation?
The update only includes info about the route change
Advance Distance Vector
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
MAC based

12. In regards to troubleshooting OSPF what should you check?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
10Mb/s
Adjacency
Plaintext and MD5

13. The time delay for a router to match a network change?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Convergence
2^n-2
Each router builds a map of the network and determines the shortest path to every network.

14. Why is this done?
Every 30 minutes by default
To reduce OSPF traffic
Advance Distance Vector
Scalable and fast convergence

15. Problem with RIP
Designated Router (DR) and a Back-up designated Router (BDR)
1
The Diffusing Update Algorithm (DUAL)
Susceptible to routing loops

16. Formula for determining hosts
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
2^n-2
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Packets are processed before they are routed to an outbound interface.

17. What is Frame Relay?
Forces protocols to behave as if they were classless
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
TRUE
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

18. A router running EIGRP will store what?
Adjacency
All backup routes for destinations.
Every 30 minutes by default
IETF

19. Admin distance of a Static Route?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
It is the signaling standard that maintains connection and statues between the DCE and DTE
1
Dijkstra's Algorithm

20. OSPF will elect a what?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
1Gb/s
Designated Router (DR) and a Back-up designated Router (BDR)
View

21. What type of algorithm does OSPF & IS-IS use?
Maximizing address efficiency - organization - summarization
20 seconds: 10 missed BPDU's
Link-State
It is the signaling standard that maintains connection and statues between the DCE and DTE

22. What does DLCI stand for?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
By DLCI's
Not scalable - hard to maintain as the network grows
Data Link Connection Identifier

23. What is passing VLAN traffic to another called?
A link is an interface on a router
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Inter-VLAN routing
Distance Vector

24. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Updates all DROTHER Routers when a change occurs
Test Firsts/ Routes Second
16
2^n-2

25. What is the default Bridge priority?
Advance Distance Vector
2^n-2
32768
Domain

26. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
The lower MAC address
Scalable and fast convergence
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.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

27. What does the back bone router do?
Convergence
To select the best path to the destination
MAC based
Connects the different areas

28. Why is it important to have a loopback address when using OSPF?
Maximizing address efficiency - organization - summarization
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Ever 2 seconds
Distance Vector

29. What is needed to pass traffic from one VLAN to another?
Adjacency
Layers 1 & 2
A layer 3 switch or router
To select the best path to the destination

30. Admin distance of RIPv2
20 seconds: 10 missed BPDU's
View
Data Link Connection Identifier
120

31. What is one to nearest
Anycast
Every 30 minutes by default
1Gb/s
A backbone area...Also known as Area 0

32. What are subinterfaces?
15.....16 hops and the interface is down
A protocol on how to communicate with other routers
Multiple virtual interfaces that are associated with one physical interface
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

33. What type of authentication does EIGRP use?
The lower MAC address
MD5 and you have to enable it if you want to use it.
Every 30 minutes by default
Anycast

34. What is a VLAN
Only with Cisco IOS software release 12.3 (2) T
A group of end stations with a common set of requirements - independent of their physical location
2^n
EIGRP - OSPF - RIP

35. How does Link-State work?
It combines the advantages of Link-State and Distance vector routing protocols.
Each router builds a map of the network and determines the shortest path to every network.
For line vty 0 4
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

36. VTP Client Mode does what?

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37. What distant vector protocols exhibit classless behavior?
Susceptible to routing loops
100Mb/s
RIPv2 and EIGRP
Advance Distance Vector

38. Max_age time for BPDU's

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39. For an adjacency to occur what do the routers have to agree on?
The Diffusing Update Algorithm (DUAL)
Adjacency
Six equal cost paths
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

40. In frame relay What is Inverse Arp
Advance Distance Vector
Every 10 seconds
Bandwidth & Delay
Associating the network address with a local DLCI.

41. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
224.0.0.10
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.

42. What is an ABR
For line vty 0 4
Area Border Router
...
Make sure you are in interface mode - then use this command ip access-group 1 out/in

43. Why is EIGRP considered a Hybrid routing protocol?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
The Root bridge is the bridge with the lowest bridge ID
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
It combines the advantages of Link-State and Distance vector routing protocols.

44. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Maximizing address efficiency - organization - summarization
TRUE
Plaintext and MD5
Dijkstra's Algorithm

45. Benefits of OSPF?
Dijkstra's Algorithm
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Scalable and fast convergence
0

46. In Link state terminology - What is a link?
A combination of Link-state and distance vector
Advertised Distance & Feasible distance
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A link is an interface on a router

47. What type of algorithm does RIP use?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Distance Vector
Every 5 seconds
224.0.0.5

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

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49. Admin distance of OSPF?
Determines the cost which is the bandwidth
110
View
Individual or group IP's

50. What does partial refer to?
The update only includes info about the route change
Test Firsts/ Routes Second
Every 10 seconds
Packet Header