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. With OSPF - what must be defined?
A permit statement
Aka Subnet mask
0
A backbone area...Also known as Area 0

2. What do you need to do if there are discontigous networks with EIGRP?
Associating the network address with a local DLCI.
Disable auto summarization
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
To reduce OSPF traffic

3. How often are periodic updates sent out via RIP
Advertised Distance & Feasible distance
Every 30 Seconds
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
A layer 3 switch or router

4. OSPF routes packets within a single?
Distance Vector
Autonomous System
Loopback
The update only includes info about the route change

5. Dynamic ACL's are dependent on what?
MD5 and you have to enable it if you want to use it.
Telnet connectivity - authentication and extended ACLs
...
...

6. What is one to many?
Ever 2 seconds
A protocol on how to communicate with other routers
Multicast
A backbone area...Also known as Area 0

7. How is the root bridge determined?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Bandwidth & Delay
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
The Root bridge is the bridge with the lowest bridge ID

8. Can you delete individual entries in a specific ACL?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Only with Cisco IOS software release 12.3 (2) T
Test Firsts/ Routes Second
Six equal cost paths

9. What is Frame Relay?
Test Firsts/ Routes Second
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
EIGRP - OSPF - RIP
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.

10. An OSPF neighbor relationship can also be called what?
MD5 and you have to enable it if you want to use it.
Autonomous System
Maximizing address efficiency - organization - summarization
Adjacency

11. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
...
4 times the hello interval
10Mb/s

12. In regards to ACL's What are the three protocols?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
4 times the hello interval
One ACL per protocol - One ACL per direction - Once ACL per interface
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.

13. What is passing VLAN traffic to another called?
Inter-VLAN routing
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Every 10 seconds
A backbone area...Also known as Area 0

14. What is the Wildcard mask
IP
Advertised Distance & Feasible distance
1Gb/s
The inverse of a subnet mask.

15. What is the multicast address for EIGRP?
Updates all DROTHER Routers when a change occurs
224.0.0.10
Scalable and fast convergence
Port based

16. Normal time for STP convergence
Between areas?
Routes First/ Tests second
224.0.0.5
30-50 seconds

17. What are non designated routers called?
DROTHER
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
4 times the hello interval
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

18. What two things need to be done to enable dynamic routing?
Cisco - ANSI - Q.933A
Select the routing protocol - then specify the network.
View
Every 5 seconds

19. Example of a Routing Protocol?
EIGRP - OSPF - RIP
TRUE
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Six equal cost paths

20. What does DLCI stand for?
Supports both unequal metric load balancing and equal metric balancing.
Data Link Connection Identifier
10Mb/s
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

21. For a VLAN to span across multiple switches What is required?
Select the routing protocol - then specify the network.
A trunk
Only with Cisco IOS software release 12.3 (2) T
Propagation of partial updates that are sent only to those routers that the changes affect.

22. VTP Transparent Mode does what?

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23. How many hops are allowed with RIP?
A trunk
2^n-2
15.....16 hops and the interface is down
Select the routing protocol - then specify the network.

24. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Forces protocols to behave as if they were classless
It is never useful to send information about a route back in the direction from which the original info came.
2^n-2

25. Explain how routing loops occur with RIP?
Designated Router (DR) and a Back-up designated Router (BDR)
The Diffusing Update Algorithm (DUAL)
Checks the source and destination address then permits or denies specific protocols
...

26. Explain OSPF

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27. How does the SPF determine the shortest path?
Distance Vector
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Determines the cost which is the bandwidth
4 times the hello interval

28. Spanning-Tree cost of 100
10Mb/s
90
1.) Enter the Routing Manually 2.) Use Dymamic Routing
IP

29. How often are BPDU's sent?
It is never useful to send information about a route back in the direction from which the original info came.
Select the routing protocol - then specify the network.
Ever 2 seconds
Null

30. Admin distance of OSPF?
110
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A combination of Link-state and distance vector
The update only includes info about the route change

31. With ACL's where does the router extract information
Updates all DROTHER Routers when a change occurs
IP
Packet Header
Match on all routers or it will not work

32. What are the major components of OSPF troubleshooting?
0
All backup routes for destinations.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
100Mb/s

33. Exterior Gateway Protocols are designed for use between
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Different Autonomous Systems
A combination of Link-state and distance vector
15.....16 hops and the interface is down

34. The AS number must what?
30-50 seconds
Match on all routers or it will not work
A trunk
Unspecified

35. Problem with RIP
Susceptible to routing loops
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Bandwidth & Delay
Determines the cost which is the bandwidth

36. Spanning-Tree coast of 4
1Gb/s
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Associating the network address with a local DLCI.
Because a loopback interface is always active and cannot be in a down state like a real interface can.

37. Break down the word Link-State

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38. Why is this done?
Unicast - Multicast - Anycast
The Root bridge is the bridge with the lowest bridge ID
A group of end stations with a common set of requirements - independent of their physical location
To reduce OSPF traffic

39. Spanning-Tree cost of 19
100Mb/s
Every 30 minutes by default
4
Six equal cost paths

40. What is the spilt horizon rule?
Checks the source address and then permits or denies the entire protocol suite
It is never useful to send information about a route back in the direction from which the original info came.
Null
1.) Enter the Routing Manually 2.) Use Dymamic Routing

41. Admin distance of RIPv2
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
120
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Packet Header

42. How often does a router send link-state advertisements?
Autonomous System
Plaintext and MD5
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Every 30 minutes by default

43. Advance Distance Vector or Hybrid uses what?
View
A combination of Link-state and distance vector
0
DROTHER

44. What does partial refer to?
Bandwidth & Delay
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
The update only includes info about the route change
Test Firsts/ Routes Second

45. Describe a Inbound ACL
Distance Vector
IETF
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Packets are processed before they are routed to an outbound interface.

46. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Select the routing protocol - then specify the network.
Aka Subnet mask
16
4

47. Admin distance of a connected Network?
Distance Vector
0
Not scalable - hard to maintain as the network grows
Adjacency

48. Wildcard masks filter

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49. Example of a Routed Protocol?
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.
IP
Only with Cisco IOS software release 12.3 (2) T
Forces protocols to behave as if they were classless

50. What distant vector protocols exhibit classless behavior?
0
RIPv2 and EIGRP
30-50 seconds
Cisco - ANSI - Q.933A