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. Can a Router exchange routing information if they are using different Routing Protocols?
Advance Distance Vector
No
To reduce OSPF traffic
4 times the hello interval

2. Dynamic ACL's are dependent on what?
Telnet connectivity - authentication and extended ACLs
Distance Vector
Ever 2 seconds
1.) Enter the Routing Manually 2.) Use Dymamic Routing

3. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
1
Multicast
Cisco - ANSI - Q.933A

4. What are subinterfaces?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Individual or group IP's
Multiple virtual interfaces that are associated with one physical interface
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

5. How are Frame Relay Circuits identified?

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6. What is Frame Relay?
30-50 seconds
0
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
4

7. In regards to troubleshooting OSPF what should you check?
MD5 and you have to enable it if you want to use it.
For line vty 0 4
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
The Root bridge is the bridge with the lowest bridge ID

8. What is ::1
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Loopback
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
A backbone area...Also known as Area 0

9. Max_age time for BPDU's

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10. What is the purpose of LMI
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
90
It is the signaling standard that maintains connection and statues between the DCE and DTE
Convergence

11. An OSPF neighbor relationship can also be called what?
Susceptible to routing loops
Adjacency
It is never useful to send information about a route back in the direction from which the original info came.
Between areas?

12. What is the default load balancing for RIP
4
100Mb/s
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Maximizing address efficiency - organization - summarization

13. Summarization of network information usually occurs where?
Between areas?
Maximizing address efficiency - organization - summarization
Every 5 seconds
Bandwidth & Delay

14. By default OSPF uses what type of authentication?
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.
...
Null
Match on all routers or it will not work

15. What does DLCI stand for?
Data Link Connection Identifier
A combination of Link-state and distance vector
0
For line vty 0 4

16. What does the DR do?
RIPv2 & EIGRP
Designated Router (DR) and a Back-up designated Router (BDR)
Updates all DROTHER Routers when a change occurs
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

17. Exterior Gateway Protocols are designed for use between
EIGRP - OSPF - RIP
Different Autonomous Systems
IP
Every 5 seconds

18. When do you use Access-Class
0
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
IP
For line vty 0 4

19. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Anycast
16
110
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

20. How many hops are allowed with RIP?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
15.....16 hops and the interface is down
One ACL per protocol - One ACL per direction - Once ACL per interface

21. Every ACL will need what?
Reduce the link-state database and routing table
0
IP
A permit statement

22. What is a VLAN
To reduce OSPF traffic
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.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
A group of end stations with a common set of requirements - independent of their physical location

23. Why is it important to have a loopback address when using OSPF?
A combination of Link-state and distance vector
One ACL per protocol - One ACL per direction - Once ACL per interface
A permit statement
Because a loopback interface is always active and cannot be in a down state like a real interface can.

24. What are the major components of OSPF troubleshooting?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 10 Seconds
One ACL per protocol - One ACL per direction - Once ACL per interface
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

25. How does an Extended ACL work?
224.0.0.5
A protocol on how to communicate with other routers
Packets are processed before they are routed to an outbound interface.
Checks the source and destination address then permits or denies specific protocols

26. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Packets are processed before they are routed to an outbound interface.
Dijkstra's Algorithm
Multicast

27. Purpose of a Routing Protocol?
Layers 1 & 2
Maximizing address efficiency - organization - summarization
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
16

28. Normal time for STP convergence
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
30-50 seconds
Individual or group IP's
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

29. How do you apply the ACL to an interface
Make sure you are in interface mode - then use this command ip access-group 1 out/in
A trunk
The Root bridge is the bridge with the lowest bridge ID
Every 30 Seconds

30. What is ::
Unspecified
224.0.0.10
100Mb/s
Multiple virtual interfaces that are associated with one physical interface

31. Admin distance of OSPF?
90
110
Six equal cost paths
4 times the hello interval

32. What are two statements that are true of IPv6 address representation?
No
EIGRP - OSPF - RIP
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
4

33. What distant vector protocols exhibit classless behavior?
30-50 seconds
RIPv2 and EIGRP
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
15.....16 hops and the interface is down

34. With OSPF - what must be defined?
0
A backbone area...Also known as Area 0
Dijkstra's Algorithm
Private: link local

35. What does EIGRP use to calculate it's metric?
View
Private: link local
Bandwidth & Delay
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

36. 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
Unicast - Multicast - Anycast
0

37. What are non designated routers called?
DROTHER
Checks the source and destination address then permits or denies specific protocols
32768
Because a loopback interface is always active and cannot be in a down state like a real interface can.

38. What type of algorithm does EIGRP use?
32768
Advance Distance Vector
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Multicast

39. Example of a Routing Protocol?
EIGRP - OSPF - RIP
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
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
Bandwidth & Delay

40. What is one to many?
It combines the advantages of Link-State and Distance vector routing protocols.
Loopback
Connects the different areas
Multicast

41. What is the dead interval
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
EIGRP - OSPF - RIP
Convergence
MAC based

42. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Routes First/ Tests second
Distance Vector
TRUE
Forces protocols to behave as if they were classless

43. How does a Standard ACL work?
Not scalable - hard to maintain as the network grows
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Checks the source address and then permits or denies the entire protocol suite
Between areas?

44. What is the spilt horizon rule?
32768
Null
Anycast
It is never useful to send information about a route back in the direction from which the original info came.

45. In frame relay What is Inverse Arp
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Associating the network address with a local DLCI.
DROTHER
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

46. What is the Wildcard mask
10Mb/s
Select the routing protocol - then specify the network.
The inverse of a subnet mask.
All backup routes for destinations.

47. What is the multicast address for EIGRP?
Port based
Loopback
224.0.0.10
Only topology within their respective area.

48. How often are OSPF hello packets sent out?
Layers 1 & 2
TRUE
Every 30 Seconds
Every 10 seconds

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

50. How does inbound ACL work?
Test Firsts/ Routes Second
Associating the network address with a local DLCI.
The Root bridge is the bridge with the lowest bridge ID
Disable auto summarization