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 do area's do?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Every 5 seconds
Test Firsts/ Routes Second
Reduce the link-state database and routing table

2. Admin distance of a Static Route?
Dijkstra's Algorithm
Checks the source address and then permits or denies the entire protocol suite
Make sure you are in interface mode - then use this command ip access-group 1 out/in
1

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

4. What does partial refer to?
0
Routes First/ Tests second
Maximizing address efficiency - organization - summarization
The update only includes info about the route change

5. Problem with RIP
Port based
Checks the source address and then permits or denies the entire protocol suite
Susceptible to routing loops
Layers 1 & 2

6. Classful Protocols summarize
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
MAC based
Automatically
30-50 seconds

7. How is the root bridge determined?
Adjacency
TRUE
The Root bridge is the bridge with the lowest bridge ID
90

8. The AS number must what?
Match on all routers or it will not work
Unspecified
The update only includes info about the route change
0

9. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Autonomous System
Multicast

10. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
Connects the different areas
The update only includes info about the route change
Unicast - Multicast - Anycast

11. How does the SPF determine the shortest path?
Checks the source address and then permits or denies the entire protocol suite
Determines the cost which is the bandwidth
RIPv2 and EIGRP
A protocol on how to communicate with other routers

12. Can a Router exchange routing information if they are using different Routing Protocols?
Scalable and fast convergence
No
Individual or group IP's
Advertised Distance & Feasible distance

13. How do you configure a sub interface?
Only topology within their respective area.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and 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
1Gb/s

14. What are the three LMI standards
110
Cisco - ANSI - Q.933A
Link-State
IP

15. What is passing VLAN traffic to another called?
Inter-VLAN routing
The inverse of a subnet mask.
Adjacency
IP

16. Admin distance of a connected Network?
16
0
Every 10 seconds
Unicast - Multicast - Anycast

17. What is the Wildcard mask
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
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.
The inverse of a subnet mask.
Make sure you are in interface mode - then use this command ip access-group 1 out/in

18. An autonomous system could also be referred to as what?
Data Link Connection Identifier
Adjacency
Domain
...

19. What type of algorithm does RIP use?
A link is an interface on a router
Distance Vector
...
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

20. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
16
Loopback
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

21. How often are periodic updates sent out via RIP
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Every 30 minutes by default
Every 30 Seconds
TRUE

22. What is the dead interval
Not scalable - hard to maintain as the network grows
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Data Link Connection Identifier
IETF

23. What does the DR do?
Updates all DROTHER Routers when a change occurs
90
Aka Subnet mask
It combines the advantages of Link-State and Distance vector routing protocols.

24. Why is it important to have a loopback address when using OSPF?
Distance Vector
Telnet connectivity - authentication and extended ACLs
Because a loopback interface is always active and cannot be in a down state like a real interface can.
110

25. Why is this done?
Cisco - ANSI - Q.933A
Ever 2 seconds
1
To reduce OSPF traffic

26. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
The lower MAC address
Cisco - ANSI - Q.933A
0

27. What is ::1
It is never useful to send information about a route back in the direction from which the original info came.
Loopback
Link-State
Unspecified

28. Admin distance of OSPF?
2^n-2
Packets are processed before they are routed to an outbound interface.
2^n
110

29. Formula for determining hosts
A layer 3 switch or router
Port based
It is never useful to send information about a route back in the direction from which the original info came.
2^n-2

30. What are non designated routers called?
DROTHER
To select the best path to the destination
Inter-VLAN routing
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

31. What does DLCI stand for?
Link-State
Data Link Connection Identifier
Updates all DROTHER Routers when a change occurs
Determines the cost which is the bandwidth

32. Who designed OSPF?
The lower MAC address
32768
Domain
IETF

33. What is one to nearest
Test Firsts/ Routes Second
4
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Anycast

34. What Layer does Frame Relay operate at?
90
IP
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Layers 1 & 2

35. For a VLAN to span across multiple switches What is required?
Individual or group IP's
4
A trunk
16

36. What two things need to be done to enable dynamic routing?
Every 30 minutes by default
Select the routing protocol - then specify the network.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
To reduce OSPF traffic

37. What is the multicast address for EIGRP?
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
Associating the network address with a local DLCI.
A protocol on how to communicate with other routers
224.0.0.10

38. Describe a Inbound ACL
Packets are processed before they are routed to an outbound interface.
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Unicast - Multicast - Anycast
Ever 2 seconds

39. How do you configure OSPF
1Gb/s
Bandwidth & Delay
A backbone area...Also known as Area 0
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

40. Admin distance of RIPv2
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
...
EIGRP - OSPF - RIP
120

41. VTP Transparent Mode does what?

42. In regards to troubleshooting OSPF what should you check?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
110
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Adjacency

43. What address is FE80:/10
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Associating the network address with a local DLCI.
Match on all routers or it will not work
Private: link local

44. Formula for determining Subnets
30-50 seconds
Test Firsts/ Routes Second
Routes First/ Tests second
2^n

45. In frame relay What is Inverse Arp
RIPv2 & EIGRP
Associating the network address with a local DLCI.
Only topology within their respective area.
Data Link Connection Identifier

46. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
110
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

47. What is OSPF multicast address?
Telnet connectivity - authentication and extended ACLs
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Reduce the link-state database and routing table
224.0.0.5

48. Problem with static routes
110
The Diffusing Update Algorithm (DUAL)
IP
Not scalable - hard to maintain as the network grows

49. Dynamic VLAN is what?
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.
32768
MAC based
4 times the hello interval

50. Describe features of RIPv1
One ACL per protocol - One ACL per direction - Once ACL per interface
Convergence
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Every 10 Seconds