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. Spanning-Tree cost of 19
Bandwidth & Delay
Propagation of partial updates that are sent only to those routers that the changes affect.
100Mb/s
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

2. Dynamic VLAN is what?
110
MAC based
Only with Cisco IOS software release 12.3 (2) T
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

3. What does the back bone router do?
Connects the different areas
The update only includes info about the route change
Only topology within their respective area.
Bandwidth & Delay

4. How does an outbound ACL work?
Link-State
Routes First/ Tests second
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

5. The time delay for a router to match a network change?
Convergence
The inverse of a subnet mask.
Multicast
Autonomous System

6. Normal time for STP convergence
30-50 seconds
90
RIPv2 and EIGRP
The lower MAC address

7. What is the spilt horizon rule?
Port based
Anycast
It is never useful to send information about a route back in the direction from which the original info came.
Telnet connectivity - authentication and extended ACLs

8. How often are periodic updates sent out via RIP
Every 30 Seconds
16
RIPv2 and EIGRP
Autonomous System

9. What are two statements that are true of IPv6 address representation?
EIGRP - OSPF - RIP
110
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Every 10 Seconds

10. What is Frame Relay?
32768
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Only topology within their respective area.
A combination of Link-state and distance vector

11. Describe an Outbound ACL
It is the signaling standard that maintains connection and statues between the DCE and DTE
100Mb/s
Maximizing address efficiency - organization - summarization
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

12. With OSPF - what must be defined?
A backbone area...Also known as Area 0
10Mb/s
EIGRP - OSPF - RIP
Because a loopback interface is always active and cannot be in a down state like a real interface can.

13. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
The update only includes info about the route change
16
A group of end stations with a common set of requirements - independent of their physical location
20 seconds: 10 missed BPDU's

14. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
...
Link-State
Maximizing address efficiency - organization - summarization

15. How often are OSPF hello packets sent out?
Reduce the link-state database and routing table
Every 10 seconds
Select the routing protocol - then specify the network.
Associating the network address with a local DLCI.

16. What do you need to do if there are discontigous networks with EIGRP?
Advertised Distance & Feasible distance
Disable auto summarization
Match on all routers or it will not work
A protocol on how to communicate with other routers

17. What is ::
Unspecified
Area Border Router
Ever 2 seconds
Private: link local

18. What three types of IPv6 address types are there?
Automatically
A trunk
Unicast - Multicast - Anycast
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

19. The no auto-summary command does what?
Forces protocols to behave as if they were classless
Associating the network address with a local DLCI.
100Mb/s
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

20. What is the default for equal cost paths for load balancing with OSPF?
Plaintext and MD5
4
IP
Six equal cost paths

21. What are two OSPF authentication methods?
Plaintext and MD5
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
All backup routes for destinations.
For line vty 0 4

22. What two classless protocols act classful by default?
EIGRP - OSPF - RIP
Cisco - ANSI - Q.933A
No
RIPv2 & EIGRP

23. What are the three LMI standards
Unicast - Multicast - Anycast
RIPv2 & EIGRP
Cisco - ANSI - Q.933A
Advertised Distance & Feasible distance

24. Admin distance of OSPF?
110
The Diffusing Update Algorithm (DUAL)
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Ever 2 seconds

25. Describe features of RIPv2
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
EIGRP - OSPF - RIP
Match on all routers or it will not work
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

26. What is a VLAN
TRUE
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
A group of end stations with a common set of requirements - independent of their physical location
Between areas?

27. Dynamic ACL's are dependent on what?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
IP
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Telnet connectivity - authentication and extended ACLs

28. Explain how routing loops occur with RIP?
Every 30 minutes by default
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
...
1.) Enter the Routing Manually 2.) Use Dymamic Routing

29. What does bounded refer to?
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.
Unicast - Multicast - Anycast
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Propagation of partial updates that are sent only to those routers that the changes affect.

30. In regards to troubleshooting OSPF what should you check?
Packet Header
Different Autonomous Systems
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Convergence

31. Problem with RIP
Designated Router (DR) and a Back-up designated Router (BDR)
Link-State
It is never useful to send information about a route back in the direction from which the original info came.
Susceptible to routing loops

32. What type of algorithm does RIP use?
Distance Vector
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
It is never useful to send information about a route back in the direction from which the original info came.
0

33. OSPF will elect a what?
4
Ever 2 seconds
Designated Router (DR) and a Back-up designated Router (BDR)
Every 30 minutes by default

34. For an adjacency to occur what do the routers have to agree on?
Select the routing protocol - then specify the network.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Only with Cisco IOS software release 12.3 (2) T
Convergence

35. What type of algorithm does OSPF & IS-IS use?
To reduce OSPF traffic
Link-State
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Convergence

36. Describe features of RIPv1
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Dijkstra's Algorithm
Plaintext and MD5
Unspecified

37. Rip is capable of load balancing over as many as?
Different Autonomous Systems
Six equal cost paths
4 times the hello interval
Associating the network address with a local DLCI.

38. How often does EIGRP send hellow packets?
1
Test Firsts/ Routes Second
Domain
Every 5 seconds

39. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Bandwidth & Delay
It is never useful to send information about a route back in the direction from which the original info came.
TRUE
Autonomous System

40. The advantages of VLSM
Maximizing address efficiency - organization - summarization
RIPv2 & EIGRP
0
4

41. Formula for determining hosts
Bandwidth & Delay
Aka Subnet mask
2^n-2
Packets are processed before they are routed to an outbound interface.

42. What does EIGRP use to calculate it's metric?
1
Propagation of partial updates that are sent only to those routers that the changes affect.
Bandwidth & Delay
Checks the source and destination address then permits or denies specific protocols

43. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Designated Router (DR) and a Back-up designated Router (BDR)
Susceptible to routing loops
Not scalable - hard to maintain as the network grows

44. An OSPF neighbor relationship can also be called what?
Loopback
4
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Adjacency

45. By default OSPF uses what type of authentication?
The Diffusing Update Algorithm (DUAL)
Individual or group IP's
Routes First/ Tests second
Null

46. A router running EIGRP will store what?
Supports both unequal metric load balancing and equal metric balancing.
Associating the network address with a local DLCI.
All backup routes for destinations.
Multiple virtual interfaces that are associated with one physical interface

47. How does Link-State work?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Updates all DROTHER Routers when a change occurs
Each router builds a map of the network and determines the shortest path to every network.
0

48. What are non designated routers called?
2^n
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
RIPv2 & EIGRP
DROTHER

49. How many hops are allowed with RIP?
15.....16 hops and the interface is down
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 10 seconds
Unicast - Multicast - Anycast

50. What is the Wildcard mask
Telnet connectivity - authentication and extended ACLs
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
The inverse of a subnet mask.
Susceptible to routing loops