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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 do area's do?
Reduce the link-state database and routing table
Maximizing address efficiency - organization - summarization
DROTHER
Link-State

2. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
Determines the cost which is the bandwidth
32768
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

3. Routing protocol is what?
Routes First/ Tests second
10Mb/s
Port based
A protocol on how to communicate with other routers

4. What are the three LMI standards
Different Autonomous Systems
Domain
120
Cisco - ANSI - Q.933A

5. Dynamic ACL's are dependent on what?
Telnet connectivity - authentication and extended ACLs
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
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
...

6. What three types of IPv6 address types are there?
4 times the hello interval
It is the signaling standard that maintains connection and statues between the DCE and DTE
Unicast - Multicast - Anycast
Associating the network address with a local DLCI.

7. The no auto-summary command does what?
Aka Subnet mask
Forces protocols to behave as if they were classless
To reduce OSPF traffic
IETF

8. What are subinterfaces?
Unicast - Multicast - Anycast
Every 10 Seconds
Multiple virtual interfaces that are associated with one physical interface
Adjacency

9. How is the root bridge determined?
EIGRP - OSPF - RIP
The Root bridge is the bridge with the lowest bridge ID
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.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

10. Dynamic VLAN is what?
MAC based
10Mb/s
Individual or group IP's
Distance Vector

11. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
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.
...
224.0.0.10

12. What does EIGRP use to calculate it's metric?
120
Bandwidth & Delay
Designated Router (DR) and a Back-up designated Router (BDR)
1.) Enter the Routing Manually 2.) Use Dymamic Routing

13. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
The update only includes info about the route change
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
View
The Diffusing Update Algorithm (DUAL)

14. Why is this done?
Select the routing protocol - then specify the network.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
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.

15. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
100Mb/s
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Match on all routers or it will not work
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. How do you configure OSPF
Advance Distance Vector
The Diffusing Update Algorithm (DUAL)
The inverse of a subnet mask.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

17. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
32768
Packets are processed before they are routed to an outbound interface.
The inverse of a subnet mask.
TRUE

18. What is the default load balancing for RIP
4
The Diffusing Update Algorithm (DUAL)
Scalable and fast convergence
By DLCI's

19. Rip is capable of load balancing over as many as?
Six equal cost paths
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
2^n-2
TRUE

20. How does a Standard ACL work?
Checks the source address and then permits or denies the entire protocol suite
Anycast
RIPv2 & EIGRP
Scalable and fast convergence

21. What two classless protocols act classful by default?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Reduce the link-state database and routing table
Automatically
RIPv2 & EIGRP

22. Summarization of network information usually occurs where?
Between areas?
RIPv2 & EIGRP
4 times the hello interval
15.....16 hops and the interface is down

23. Static VLAN is what?
120
Port based
Checks the source address and then permits or denies the entire protocol suite
Propagation of partial updates that are sent only to those routers that the changes affect.

24. An autonomous system could also be referred to as what?
Forces protocols to behave as if they were classless
Domain
Port based
...

25. How do you apply the ACL to an interface
Automatically
Inter-VLAN routing
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Six equal cost paths

26. What do you need to do if there are discontigous networks with EIGRP?
Disable auto summarization
Dijkstra's Algorithm
Packets are processed before they are routed to an outbound interface.
Null

27. What is Frame Relay?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
A group of end stations with a common set of requirements - independent of their physical location
Automatically
2^n-2

28. What are the major components of OSPF troubleshooting?
Every 10 Seconds
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
For line vty 0 4
A combination of Link-state and distance vector

29. What are non designated routers called?
Multicast
The lower MAC address
DROTHER
Autonomous System

30. How often are LMI's sent out?
0
Null
Every 10 Seconds
Checks the source address and then permits or denies the entire protocol suite

31. 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.
A group of end stations with a common set of requirements - independent of their physical location
Make sure you are in interface mode - then use this command ip access-group 1 out/in
2^n-2

32. With ACL's where does the router extract information
Packet Header
20 seconds: 10 missed BPDU's
Only with Cisco IOS software release 12.3 (2) T
4

33. How often does EIGRP send hellow packets?
Anycast
Every 5 seconds
1Gb/s
Advertised Distance & Feasible distance

34. For a VLAN to span across multiple switches What is required?
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
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

35. Example of a Routing Protocol?
Between areas?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
EIGRP - OSPF - RIP
15.....16 hops and the interface is down

36. Wildcard masks filter

37. Describe features of RIPv1
MAC based
A group of end stations with a common set of requirements - independent of their physical location
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
RIPv2 & EIGRP

38. How long is the dead interval
90
Propagation of partial updates that are sent only to those routers that the changes affect.
MD5 and you have to enable it if you want to use it.
4 times the hello interval

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

40. What two parameters does EIGRP use to determine the best route?
0
Advertised Distance & Feasible distance
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Make sure you are in interface mode - then use this command ip access-group 1 out/in

41. Admin distance of OSPF?
By DLCI's
Select the routing protocol - then specify the network.
Associating the network address with a local DLCI.
110

42. The AS number must what?
Aka Subnet mask
Match on all routers or it will not work
For line vty 0 4
Every 30 Seconds

43. Admin distance of EIGRP?
RIPv2 & EIGRP
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
4
90

44. How often does a router send link-state advertisements?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Match on all routers or it will not work
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Every 30 minutes by default

45. Purpose of a Routing Protocol?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Area Border Router
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
A link is an interface on a router

46. Explain how routing loops occur with RIP?
A group of end stations with a common set of requirements - independent of their physical location
...
To reduce OSPF traffic
Every 5 seconds

47. What are the two ways routers can learn about the destination information?
A group of end stations with a common set of requirements - independent of their physical location
Bandwidth & Delay
1.) Enter the Routing Manually 2.) Use Dymamic Routing
The update only includes info about the route change

48. What does the DR do?
Bandwidth & Delay
120
Updates all DROTHER Routers when a change occurs
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

49. What type of algorithm does OSPF & IS-IS use?
Every 10 seconds
Link-State
MD5 and you have to enable it if you want to use it.
Packets are processed before they are routed to an outbound interface.

50. How many hops are allowed with RIP?
TRUE
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
15.....16 hops and the interface is down
Port based