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 back bone router do?
Connects the different areas
Distance Vector
Ever 2 seconds
4 times the hello interval

2. With OSPF - what must be defined?
4 times the hello interval
A backbone area...Also known as Area 0
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Maximizing address efficiency - organization - summarization

3. Problem with RIP
Susceptible to routing loops
Test Firsts/ Routes Second
Determines the cost which is the bandwidth
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

4. Spanning-Tree cost of 100
10Mb/s
Packets are processed before they are routed to an outbound interface.
TRUE
Because a loopback interface is always active and cannot be in a down state like a real interface can.

5. Admin distance of a connected Network?
A backbone area...Also known as Area 0
Checks the source address and then permits or denies the entire protocol suite
Multicast
0

6. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
MD5 and you have to enable it if you want to use it.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

7. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
110
Forces protocols to behave as if they were classless
1Gb/s
TRUE

8. Problem with static routes
A layer 3 switch or router
0
Not scalable - hard to maintain as the network grows
...

9. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
To select the best path to the destination
A permit statement
1Gb/s
16

10. When do you use Access-Class
Dijkstra's Algorithm
For line vty 0 4
Autonomous System
The inverse of a subnet mask.

11. A router running EIGRP will store what?
2^n-2
100Mb/s
1.) Enter the Routing Manually 2.) Use Dymamic Routing
All backup routes for destinations.

12. How is the root bridge determined?
The Root bridge is the bridge with the lowest bridge ID
Every 5 seconds
Unspecified
Unicast - Multicast - Anycast

13. What is an Autonomous System?
Packet Header
Bandwidth & Delay
...
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

14. What are subinterfaces?
Reduce the link-state database and routing table
Aka Subnet mask
Advance Distance Vector
Multiple virtual interfaces that are associated with one physical interface

15. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
A link is an interface on a router
A trunk
...

16. What is passing VLAN traffic to another called?
Plaintext and MD5
Inter-VLAN routing
Cisco - ANSI - Q.933A
A link is an interface on a router

17. How does Link-State work?
Not scalable - hard to maintain as the network grows
Each router builds a map of the network and determines the shortest path to every network.
Null
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

18. In regards to troubleshooting OSPF what should you check?
By DLCI's
Link-State
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
1.) Enter the Routing Manually 2.) Use Dymamic Routing

19. How often are OSPF hello packets sent out?
Port based
Every 10 seconds
224.0.0.10
Multiple virtual interfaces that are associated with one physical interface

20. What three types of IPv6 address types are there?
TRUE
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Unicast - Multicast - Anycast
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

21. What is the default Bridge priority?
32768
224.0.0.10
Link-State
10Mb/s

22. When placing ACL's in the Network...Do what?

23. How do you configure a sub 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
100Mb/s
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Multiple virtual interfaces that are associated with one physical interface

24. What two things need to be done to enable dynamic routing?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
224.0.0.5
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Select the routing protocol - then specify the network.

25. What do you need to do if there are discontigous networks with EIGRP?
0
Disable auto summarization
Every 5 seconds
Autonomous System

26. Summarization of network information usually occurs where?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Convergence
Between areas?
A protocol on how to communicate with other routers

27. Can a Router exchange routing information if they are using different Routing Protocols?
No
30-50 seconds
Domain
The inverse of a subnet mask.

28. Routing protocol is what?
A protocol on how to communicate with other routers
RIPv2 & EIGRP
View
It combines the advantages of Link-State and Distance vector routing protocols.

29. How does EIGRP work with regards to Load Balancing
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Routes First/ Tests second
Supports both unequal metric load balancing and equal metric balancing.
Updates all DROTHER Routers when a change occurs

30. How often are BPDU's sent?
Convergence
EIGRP - OSPF - RIP
Ever 2 seconds
Null

31. Example of a Routed Protocol?
120
IP
Unspecified
16

32. In Link state terminology - What is a link?
No
Associating the network address with a local DLCI.
A link is an interface on a router
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

33. How is an EUI-64 format interface ID created from a 48-Bit MAC address
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
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Between areas?

34. In frame relay What is Inverse Arp
Scalable and fast convergence
Loopback
Associating the network address with a local DLCI.
A permit statement

35. How often are periodic updates sent out via RIP
Updates all DROTHER Routers when a change occurs
Every 30 Seconds
10Mb/s
Cisco - ANSI - Q.933A

36. For an adjacency to occur what do the routers have to agree on?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Each router builds a map of the network and determines the shortest path to every network.
100Mb/s
Domain

37. Dynamic ACL's are dependent on what?
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.
To select the best path to the destination
Every 30 Seconds
Telnet connectivity - authentication and extended ACLs

38. What two classless protocols act classful by default?
RIPv2 & EIGRP
Aka Subnet mask
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Designated Router (DR) and a Back-up designated Router (BDR)

39. Purpose of a Routing Protocol?
Cisco - ANSI - Q.933A
Checks the source address and then permits or denies the entire protocol suite
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Multicast

40. How often does a router send link-state advertisements?
224.0.0.10
Every 30 minutes by default
To select the best path to the destination
32768

41. What are the three LMI standards
1
Cisco - ANSI - Q.933A
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
The lower MAC address

42. How does inbound ACL work?
Test Firsts/ Routes Second
Six equal cost paths
Ever 2 seconds
0

43. With OSPF - there must always be a area......
0
32768
Bandwidth & Delay
TRUE

44. Formula for determining Subnets
View
By DLCI's
Only with Cisco IOS software release 12.3 (2) T
2^n

45. Can you delete individual entries in a specific ACL?
EIGRP - OSPF - RIP
Null
Inter-VLAN routing
Only with Cisco IOS software release 12.3 (2) T

46. Rip is capable of load balancing over as many as?
IP
Layers 1 & 2
Six equal cost paths
Convergence

47. Why is it important to have a loopback address when using OSPF?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Checks the source and destination address then permits or denies specific protocols
16
Because a loopback interface is always active and cannot be in a down state like a real interface can.

48. Normal time for STP convergence
20 seconds: 10 missed BPDU's
30-50 seconds
Advertised Distance & Feasible distance
Test Firsts/ Routes Second

49. Describe features of RIPv1
The update only includes info about the route change
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
It combines the advantages of Link-State and Distance vector routing protocols.
Dijkstra's Algorithm

50. Classful Protocols summarize
It is the signaling standard that maintains connection and statues between the DCE and DTE
16
Automatically
Supports both unequal metric load balancing and equal metric balancing.