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. OSPF will elect a what?
No
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
Every 30 minutes by default
Designated Router (DR) and a Back-up designated Router (BDR)

2. What does EIGRP use to calculate it's metric?
Reduce the link-state database and routing table
A backbone area...Also known as Area 0
Bandwidth & Delay
Only topology within their respective area.

3. What is one to nearest
224.0.0.10
Disable auto summarization
Anycast
Packets are processed before they are routed to an outbound interface.

4. Can you delete individual entries in a specific ACL?
TRUE
Updates all DROTHER Routers when a change occurs
1Gb/s
Only with Cisco IOS software release 12.3 (2) T

5. What does the DR do?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Domain
Updates all DROTHER Routers when a change occurs
Automatically

6. Spanning-Tree coast of 4
IETF
Between areas?
Telnet connectivity - authentication and extended ACLs
1Gb/s

7. What is an Autonomous System?
Supports both unequal metric load balancing and equal metric balancing.
Associating the network address with a local DLCI.
...
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

8. What is one to many?
Six equal cost paths
30-50 seconds
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Multicast

9. What distant vector protocols exhibit classless behavior?
0
To select the best path to the destination
RIPv2 and EIGRP
By DLCI's

10. What is ::
Between areas?
By DLCI's
Unspecified
Each router builds a map of the network and determines the shortest path to every network.

11. How often are LMI's sent out?
...
Every 10 Seconds
1
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

12. How often does EIGRP send hellow packets?
Every 5 seconds
RIPv2 and EIGRP
224.0.0.5
Data Link Connection Identifier

13. What is a VLAN
Checks the source and destination address then permits or denies specific protocols
Scalable and fast convergence
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

14. What type of algorithm does RIP use?
Propagation of partial updates that are sent only to those routers that the changes affect.
Unicast - Multicast - Anycast
Distance Vector
Disable auto summarization

15. What does DLCI stand for?
Data Link Connection Identifier
110
Reduce the link-state database and routing table
100Mb/s

16. What type of authentication does EIGRP use?
Checks the source address and then permits or denies the entire protocol suite
MD5 and you have to enable it if you want to use it.
Plaintext and MD5
Packet Header

17. How does the SPF determine the shortest path?
4
Determines the cost which is the bandwidth
TRUE
Data Link Connection Identifier

18. VTP Server Mode does what?

19. Why is EIGRP considered a Hybrid routing protocol?
Port based
Reduce the link-state database and routing table
It combines the advantages of Link-State and Distance vector routing protocols.
MAC based

20. With ACL's where does the router extract information
Autonomous System
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Packet Header
Different Autonomous Systems

21. How often are OSPF hello packets sent out?
MAC based
Every 10 seconds
120
Each router builds a map of the network and determines the shortest path to every network.

22. What type of algorithm does OSPF & IS-IS use?
Telnet connectivity - authentication and extended ACLs
Link-State
Supports both unequal metric load balancing and equal metric balancing.
Anycast

23. How does an outbound ACL work?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
One ACL per protocol - One ACL per direction - Once ACL per interface
Routes First/ Tests second
0

24. What are two OSPF authentication methods?
Plaintext and MD5
30-50 seconds
Loopback
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

25. What address is FE80:/10
Dijkstra's Algorithm
Reduce the link-state database and routing table
Private: link local
RIPv2 and EIGRP

26. Who designed OSPF?
IETF
Multicast
Scalable and fast convergence
It is the signaling standard that maintains connection and statues between the DCE and DTE

27. OSPF routes packets within a single?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Autonomous System
...
Every 30 Seconds

28. Admin distance of EIGRP?
Telnet connectivity - authentication and extended ACLs
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.
90
120

29. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Each router builds a map of the network and determines the shortest path to every network.
TRUE
To reduce OSPF traffic
A backbone area...Also known as Area 0

30. Why is it important to have a loopback address when using OSPF?
15.....16 hops and the interface is down
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.
The Diffusing Update Algorithm (DUAL)

31. Normal time for STP convergence
30-50 seconds
Convergence
20 seconds: 10 missed BPDU's
The inverse of a subnet mask.

32. How does an Extended ACL work?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Checks the source and destination address then permits or denies specific protocols
Individual or group IP's
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

33. Problem with RIP
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Multicast
Susceptible to routing loops
1.) Enter the Routing Manually 2.) Use Dymamic Routing

34. What is OSPF multicast address?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
10Mb/s
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
224.0.0.5

35. Problem with static routes
Not scalable - hard to maintain as the network grows
32768
0
Test Firsts/ Routes Second

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

37. How does Link-State work?
15.....16 hops and the interface is down
One ACL per protocol - One ACL per direction - Once ACL per interface
Each router builds a map of the network and determines the shortest path to every network.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

38. How does inbound ACL work?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Test Firsts/ Routes Second
A trunk
Layers 1 & 2

39. Can a Router exchange routing information if they are using different Routing Protocols?
It is never useful to send information about a route back in the direction from which the original info came.
It is the signaling standard that maintains connection and statues between the DCE and DTE
No
It combines the advantages of Link-State and Distance vector routing protocols.

40. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
Select the routing protocol - then specify the network.
No
Connects the different areas

41. Describe a Inbound ACL
10Mb/s
Packets are processed before they are routed to an outbound interface.
Advertised Distance & Feasible distance
TRUE

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

43. Admin distance of a connected Network?
A group of end stations with a common set of requirements - independent of their physical location
0
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

44. When do you use Access-Class
DROTHER
A permit statement
For line vty 0 4
It combines the advantages of Link-State and Distance vector routing protocols.

45. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
A layer 3 switch or router
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
View
The Diffusing Update Algorithm (DUAL)

46. What does the back bone router do?
Loopback
EIGRP - OSPF - RIP
Inter-VLAN routing
Connects the different areas

47. Example of a Routed Protocol?
15.....16 hops and the interface is down
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
IP
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

48. What is the purpose of LMI
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
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.
It is the signaling standard that maintains connection and statues between the DCE and DTE

49. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
100Mb/s
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
TRUE
It combines the advantages of Link-State and Distance vector routing protocols.

50. An autonomous system could also be referred to as what?
Individual or group IP's
Ever 2 seconds
To reduce OSPF traffic
Domain