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. What does the DR do?
Updates all DROTHER Routers when a change occurs
A group of end stations with a common set of requirements - independent of their physical location
Layers 1 & 2
A link is an interface on a router

2. An autonomous system could also be referred to as what?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
RIPv2 & EIGRP
Domain
Plaintext and MD5

3. An OSPF neighbor relationship can also be called what?
Telnet connectivity - authentication and extended ACLs
Adjacency
Unicast - Multicast - Anycast
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

4. The time delay for a router to match a network change?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
30-50 seconds
Convergence
Packets are processed before they are routed to an outbound interface.

5. What does the back bone router do?
Dijkstra's Algorithm
Connects the different areas
1
A backbone area...Also known as Area 0

6. What is the Wildcard mask
Six equal cost paths
Telnet connectivity - authentication and extended ACLs
The inverse of a subnet mask.
Different Autonomous Systems

7. How long is the dead interval
4 times the hello interval
224.0.0.10
2^n
Test Firsts/ Routes Second

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

9. What is an Autonomous System?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
...
A link is an interface on a router
It combines the advantages of Link-State and Distance vector routing protocols.

10. Describe features of RIPv1
The inverse of a subnet mask.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Every 10 Seconds
MD5 and you have to enable it if you want to use it.

11. Admin distance of EIGRP?
IP
Disable auto summarization
90
1Gb/s

12. What type of algorithm does OSPF & IS-IS use?
Convergence
100Mb/s
Link-State
Dijkstra's Algorithm

13. How does the SPF determine the shortest path?
A protocol on how to communicate with other routers
Between areas?
Determines the cost which is the bandwidth
4 times the hello interval

14. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Domain
Propagation of partial updates that are sent only to those routers that the changes affect.

15. What distant vector protocols exhibit classless behavior?
100Mb/s
RIPv2 and EIGRP
EIGRP - OSPF - RIP
A permit statement

16. What two classless protocols act classful by default?
Match on all routers or it will not work
Only topology within their respective area.
Cisco - ANSI - Q.933A
RIPv2 & EIGRP

17. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Multicast
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Advertised Distance & Feasible distance
16

18. What is Frame Relay?
Six equal cost paths
100Mb/s
All backup routes for destinations.
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

19. Every ACL will need what?
Six equal cost paths
A permit statement
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
By DLCI's

20. What type of algorithm does EIGRP use?
Advance Distance Vector
TRUE
Loopback
To reduce OSPF traffic

21. What two things need to be done to enable dynamic routing?
Every 10 Seconds
Individual or group IP's
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Select the routing protocol - then specify the network.

22. Summarization of network information usually occurs where?
Six equal cost paths
To select the best path to the destination
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Between areas?

23. VTP Transparent Mode does what?

24. What are two OSPF authentication methods?
MD5 and you have to enable it if you want to use it.
Plaintext and MD5
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
90

25. Dynamic VLAN is what?
All backup routes for destinations.
Packets are processed before they are routed to an outbound interface.
MAC based
1

26. What are the major components of OSPF troubleshooting?
1
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Propagation of partial updates that are sent only to those routers that the changes affect.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

27. What does DLCI stand for?
Aka Subnet mask
Adjacency
Data Link Connection Identifier
0

28. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Dijkstra's Algorithm
Susceptible to routing loops
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
EIGRP - OSPF - RIP

29. What do you need to do if there are discontigous networks with EIGRP?
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.
16
TRUE
Disable auto summarization

30. How do you configure a sub interface?
Domain
A trunk
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
Determines the cost which is the bandwidth

31. How do you configure OSPF
4
MAC based
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

32. What is needed to pass traffic from one VLAN to another?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Carry's traffic for multiple VLANS
4
A layer 3 switch or router

33. How often are BPDU's sent?
Ever 2 seconds
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
No
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

34. How does an outbound ACL work?
224.0.0.10
A layer 3 switch or router
Routes First/ Tests second
Because a loopback interface is always active and cannot be in a down state like a real interface can.

35. What is the multicast address for EIGRP?
224.0.0.10
1
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.
Different Autonomous Systems

36. VTP Client Mode does what?

37. Admin distance of a connected Network?
30-50 seconds
Disable auto summarization
0
It combines the advantages of Link-State and Distance vector routing protocols.

38. By default OSPF uses what type of authentication?
Null
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Dijkstra's Algorithm
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

39. Purpose of a Routing Protocol?
Distance Vector
Private: link local
Disable auto summarization
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

40. What is prefix length?
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
Aka Subnet mask
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
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.

41. What is passing VLAN traffic to another called?
It is never useful to send information about a route back in the direction from which the original info came.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Between areas?
Inter-VLAN routing

42. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Reduce the link-state database and routing table
Associating the network address with a local DLCI.
Anycast
View

43. For a VLAN to span across multiple switches What is required?
A trunk
Between areas?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Automatically

44. In frame relay What is Inverse Arp
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Carry's traffic for multiple VLANS
Associating the network address with a local DLCI.
TRUE

45. 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
Susceptible to routing loops
It combines the advantages of Link-State and Distance vector routing protocols.
Between areas?

46. Problem with static routes
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Not scalable - hard to maintain as the network grows
4
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.

47. Routing protocol is what?
Select the routing protocol - then specify the network.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Telnet connectivity - authentication and extended ACLs
A protocol on how to communicate with other routers

48. How often are periodic updates sent out via RIP
30-50 seconds
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Every 30 Seconds
IETF

49. What three types of IPv6 address types are there?
Determines the cost which is the bandwidth
Null
1Gb/s
Unicast - Multicast - Anycast

50. How many hops are allowed with RIP?
Port based
15.....16 hops and the interface is down
Disable auto summarization
Test Firsts/ Routes Second