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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
Adjacency
Scalable and fast convergence
15.....16 hops and the interface is down

2. What do area's do?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Supports both unequal metric load balancing and equal metric balancing.
Link-State
Reduce the link-state database and routing table

3. For a VLAN to span across multiple switches What is required?
Packet Header
Advertised Distance & Feasible distance
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
A trunk

4. What is the default load balancing for RIP
4
Port based
Make sure you are in interface mode - then use this command ip access-group 1 out/in
It combines the advantages of Link-State and Distance vector routing protocols.

5. What is one to nearest
Anycast
Domain
Unspecified
Associating the network address with a local DLCI.

6. What is OSPF multicast address?
Ever 2 seconds
224.0.0.5
0
Select the routing protocol - then specify the network.

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

8. How do you configure OSPF
EIGRP - OSPF - RIP
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
4 times the hello interval
Each router builds a map of the network and determines the shortest path to every network.

9. What is the multicast address for EIGRP?
0
DROTHER
224.0.0.10
Every 10 seconds

10. With ACL's where does the router extract information
Advertised Distance & Feasible distance
Checks the source address and then permits or denies the entire protocol suite
4
Packet Header

11. The no auto-summary command does what?
Designated Router (DR) and a Back-up designated Router (BDR)
Susceptible to routing loops
Forces protocols to behave as if they were classless
32768

12. What is the default Bridge priority?
Disable auto summarization
Carry's traffic for multiple VLANS
32768
Every 30 minutes by default

13. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
A protocol on how to communicate with other routers
4

14. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
A backbone area...Also known as Area 0
To select the best path to the destination
16

15. What are non designated routers called?
Domain
DROTHER
Checks the source and destination address then permits or denies specific protocols
10Mb/s

16. What type of algorithm does OSPF & IS-IS use?
Link-State
4
It combines the advantages of Link-State and Distance vector routing protocols.
All backup routes for destinations.

17. Formula for determining Subnets
90
2^n
Telnet connectivity - authentication and extended ACLs
Every 10 seconds

18. What distant vector protocols exhibit classless behavior?
Anycast
Connects the different areas
Every 30 Seconds
RIPv2 and EIGRP

19. What address is FE80:/10
Private: link local
2^n
Data Link Connection Identifier
No

20. Explain OSPF

21. How often does EIGRP send hellow packets?
Six equal cost paths
Every 5 seconds
Carry's traffic for multiple VLANS
Automatically

22. What is ::
Test Firsts/ Routes Second
EIGRP - OSPF - RIP
Unspecified
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

23. What is an Autonomous System?
2^n-2
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
MAC based
...

24. What are the three LMI standards
Cisco - ANSI - Q.933A
A trunk
Each router builds a map of the network and determines the shortest path to every network.
Only with Cisco IOS software release 12.3 (2) T

25. How does Link-State work?
Each router builds a map of the network and determines the shortest path to every network.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Not scalable - hard to maintain as the network grows

26. How often does a router send link-state advertisements?
Every 30 minutes by default
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
1
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

27. Why is this done?
Determines the cost which is the bandwidth
Advance Distance Vector
To reduce OSPF traffic
Every 5 seconds

28. What does DLCI stand for?
Data Link Connection Identifier
No
Disable auto summarization
A link is an interface on a router

29. How is the root bridge determined?
The Root bridge is the bridge with the lowest bridge ID
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Supports both unequal metric load balancing and equal metric balancing.
30-50 seconds

30. What two parameters does EIGRP use to determine the best route?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Data Link Connection Identifier
Advertised Distance & Feasible distance
Propagation of partial updates that are sent only to those routers that the changes affect.

31. How often are LMI's sent out?
Every 10 Seconds
A protocol on how to communicate with other routers
Scalable and fast convergence
Convergence

32. How long is the dead interval
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
4 times the hello interval
The lower MAC address
Every 10 seconds

33. What does a trunk do?

34. Dynamic ACL's are dependent on what?
To reduce OSPF traffic
0
Aka Subnet mask
Telnet connectivity - authentication and extended ACLs

35. Problem with RIP
Select the routing protocol - then specify the network.
Susceptible to routing loops
TRUE
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

36. What is the spilt horizon rule?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
It is never useful to send information about a route back in the direction from which the original info came.
Multicast
Bandwidth & Delay

37. What is Frame Relay?
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.
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.
1
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

38. What three types of IPv6 address types are there?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Unicast - Multicast - Anycast
2^n
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

39. In regards to ACL's What are the three protocols?
One ACL per protocol - One ACL per direction - Once ACL per 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
A layer 3 switch or router
10Mb/s

40. Admin distance of a connected Network?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
...
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
0

41. How does an Extended ACL work?
90
Determines the cost which is the bandwidth
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Checks the source and destination address then permits or denies specific protocols

42. Describe an Outbound ACL
Unicast - Multicast - Anycast
RIPv2 and EIGRP
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Data Link Connection Identifier

43. Dynamic VLAN is what?
The Root bridge is the bridge with the lowest bridge ID
Every 10 seconds
MAC based
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

44. What does the DR do?
Carry's traffic for multiple VLANS
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Updates all DROTHER Routers when a change occurs
Forces protocols to behave as if they were classless

45. Why is EIGRP considered a Hybrid routing protocol?
The lower MAC address
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
1Gb/s
It combines the advantages of Link-State and Distance vector routing protocols.

46. What is ::1
Every 10 Seconds
Forces protocols to behave as if they were classless
Loopback
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

47. How often are periodic updates sent out via RIP
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Maximizing address efficiency - organization - summarization
The Diffusing Update Algorithm (DUAL)
Every 30 Seconds

48. What is the Wildcard mask
Multiple virtual interfaces that are associated with one physical interface
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
The inverse of a subnet mask.
Cisco - ANSI - Q.933A

49. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
TRUE
Test Firsts/ Routes Second
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.
...

50. What do you need to do if there are discontigous networks with EIGRP?
4
Between areas?
Disable auto summarization
90