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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 two classless protocols act classful by default?
A backbone area...Also known as Area 0
RIPv2 & EIGRP
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
TRUE

2. What is needed to pass traffic from one VLAN to another?
MD5 and you have to enable it if you want to use it.
Updates all DROTHER Routers when a change occurs
A layer 3 switch or router
Domain

3. What do you need to do if there are discontigous networks with EIGRP?
Six equal cost paths
Disable auto summarization
DROTHER
Scalable and fast convergence

4. Describe features of RIPv1
All backup routes for destinations.
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
90
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

5. Benefits of OSPF?
4
Scalable and fast convergence
To reduce OSPF traffic
IETF

6. VTP Server Mode does what?

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7. A router running EIGRP will store what?
Adjacency
All backup routes for destinations.
Unicast - Multicast - Anycast
A combination of Link-state and distance vector

8. Advance Distance Vector or Hybrid uses what?
Connects the different areas
A combination of Link-state and distance vector
To reduce OSPF traffic
Disable auto summarization

9. What is one to many?
The Root bridge is the bridge with the lowest bridge ID
Every 10 seconds
Select the routing protocol - then specify the network.
Multicast

10. What is an Autonomous System?
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.
...
Only with Cisco IOS software release 12.3 (2) T
15.....16 hops and the interface is down

11. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Anycast
Ever 2 seconds
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
View

12. What address is FE80:/10
16
Updates all DROTHER Routers when a change occurs
Checks the source and destination address then permits or denies specific protocols
Private: link local

13. Dynamic VLAN is what?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
RIPv2 and EIGRP
MAC based
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

14. What algorithm does EIGRP use?
...
The Diffusing Update Algorithm (DUAL)
Aka Subnet mask
90

15. Routing protocol is what?
Unicast - Multicast - Anycast
A protocol on how to communicate with other routers
A group of end stations with a common set of requirements - independent of their physical location
A backbone area...Also known as Area 0

16. The no auto-summary command does what?
Forces protocols to behave as if they were classless
For line vty 0 4
Updates all DROTHER Routers when a change occurs
Propagation of partial updates that are sent only to those routers that the changes affect.

17. What distant vector protocols exhibit classless behavior?
Unicast - Multicast - Anycast
RIPv2 and EIGRP
Every 5 seconds
2^n-2

18. Who designed OSPF?
IETF
Multicast
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Select the routing protocol - then specify the network.

19. Static VLAN is what?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Port based
To select the best path to the destination
Unicast - Multicast - Anycast

20. How often does EIGRP send hellow packets?
Every 5 seconds
Advance Distance Vector
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
1

21. With ACL's where does the router extract information
20 seconds: 10 missed BPDU's
Telnet connectivity - authentication and extended ACLs
Packet Header
Test Firsts/ Routes Second

22. The time delay for a router to match a network change?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Convergence
MD5 and you have to enable it if you want to use it.
Forces protocols to behave as if they were classless

23. Example of a Routing Protocol?
EIGRP - OSPF - RIP
Every 10 seconds
Every 30 Seconds
The inverse of a subnet mask.

24. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
MD5 and you have to enable it if you want to use it.
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.
Individual or group IP's
Null

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

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26. What does a trunk do?

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27. How often are OSPF hello packets sent out?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Every 10 seconds
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Adjacency

28. What is the default Bridge priority?
32768
To select the best path to the destination
Distance Vector
Disable auto summarization

29. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
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.
Layers 1 & 2
Link-State
TRUE

30. How often are BPDU's sent?
IETF
Match on all routers or it will not work
Ever 2 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.

31. What is ::1
Loopback
4
Convergence
Ever 2 seconds

32. What is the purpose of LMI
Packet Header
Checks the source address and then permits or denies the entire protocol suite
It is the signaling standard that maintains connection and statues between the DCE and DTE
DROTHER

33. How do you configure a sub interface?
Adjacency
It combines the advantages of Link-State and Distance vector routing protocols.
Domain
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

34. What Layer does Frame Relay operate at?
32768
Distance Vector
Layers 1 & 2
Checks the source address and then permits or denies the entire protocol suite

35. The AS number must what?
Susceptible to routing loops
Ever 2 seconds
Match on all routers or it will not work
Reduce the link-state database and routing table

36. Describe a Inbound ACL
90
Routes First/ Tests second
Packets are processed before they are routed to an outbound interface.
Select the routing protocol - then specify the network.

37. Summarization of network information usually occurs where?
Checks the source and destination address then permits or denies specific protocols
Between areas?
Reduce the link-state database and routing table
1.) Enter the Routing Manually 2.) Use Dymamic Routing

38. What type of algorithm does RIP use?
Distance Vector
The inverse of a subnet mask.
Reduce the link-state database and routing table
Test Firsts/ Routes Second

39. Explain how routing loops occur with RIP?
...
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
IP
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

40. What type of algorithm does EIGRP use?
Advance Distance Vector
Carry's traffic for multiple VLANS
Make sure you are in interface mode - then use this command ip access-group 1 out/in
EIGRP - OSPF - RIP

41. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
Checks the source address and then permits or denies the entire protocol suite
1
IP

42. What is the default load balancing for RIP
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Packets are processed before they are routed to an outbound interface.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
4

43. What are the three LMI standards
Cisco - ANSI - Q.933A
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
RIPv2 & EIGRP
Individual or group IP's

44. What does EIGRP use to calculate it's metric?
DROTHER
Layers 1 & 2
Bandwidth & Delay
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.

45. How is the root bridge determined?
The Root bridge is the bridge with the lowest bridge ID
Checks the source address and then permits or denies the entire protocol suite
IETF
TRUE

46. What is prefix length?
MAC based
A layer 3 switch or router
Aka Subnet mask
Telnet connectivity - authentication and extended ACLs

47. Describe features of RIPv2
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
The update only includes info about the route change

48. What is the default for equal cost paths for load balancing with OSPF?
Anycast
4
Checks the source address and then permits or denies the entire protocol suite
...

49. What is Frame Relay?
Adjacency
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Distance Vector
Advertised Distance & Feasible distance

50. An autonomous system could also be referred to as what?
Dijkstra's Algorithm
120
Domain
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available