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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. How is the root bridge determined?
Designated Router (DR) and a Back-up designated Router (BDR)
Each router builds a map of the network and determines the shortest path to every network.
The Root bridge is the bridge with the lowest bridge ID
Every 30 minutes by default

2. What are the major components of OSPF troubleshooting?
Port based
Anycast
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Different Autonomous Systems

3. Describe an Outbound ACL
Cisco - ANSI - Q.933A
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Individual or group IP's

4. A router running EIGRP will store what?
RIPv2 & EIGRP
TRUE
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
All backup routes for destinations.

5. Dynamic VLAN is what?
10Mb/s
MAC based
Layers 1 & 2
1

6. An OSPF neighbor relationship can also be called what?
15.....16 hops and the interface is down
Adjacency
DROTHER
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

7. Routers are used for what?
To select the best path to the destination
16
Different Autonomous Systems
1.) Enter the Routing Manually 2.) Use Dymamic Routing

8. Why is it important to have a loopback address when using OSPF?
Carry's traffic for multiple VLANS
Because a loopback interface is always active and cannot be in a down state like a real interface can.
RIPv2 and EIGRP
Multiple virtual interfaces that are associated with one physical interface

9. Example of a Routing Protocol?
A group of end stations with a common set of requirements - independent of their physical location
Not scalable - hard to maintain as the network grows
...
EIGRP - OSPF - RIP

10. What is an ABR
Dijkstra's Algorithm
Area Border Router
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
110

11. Problem with static routes
Not scalable - hard to maintain as the network grows
Aka Subnet mask
Designated Router (DR) and a Back-up designated Router (BDR)
A trunk

12. Problem with RIP
Susceptible to routing loops
90
Reduce the link-state database and routing table
A protocol on how to communicate with other routers

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

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14. What is one to many?
...
Every 10 seconds
Packet Header
Multicast

15. Summarization of network information usually occurs where?
RIPv2 & EIGRP
Between areas?
Checks the source address and then permits or denies the entire protocol suite
10Mb/s

16. Who designed OSPF?
IETF
Match on all routers or it will not work
32768
Bandwidth & Delay

17. How many hops are allowed with RIP?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
View
15.....16 hops and the interface is down

18. What two classless protocols act classful by default?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
RIPv2 & EIGRP
To select the best path to the destination

19. 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.
TRUE
Individual or group IP's
Updates all DROTHER Routers when a change occurs

20. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
The Root bridge is the bridge with the lowest bridge ID
Convergence
RIPv2 and EIGRP

21. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
A protocol on how to communicate with other routers
Checks the source and destination address then permits or denies specific protocols
Connects the different areas

22. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
10Mb/s
16
IETF

23. What is ::1
Loopback
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Advertised Distance & Feasible distance
0

24. What is an Autonomous System?
TRUE
Not scalable - hard to maintain as the network grows
...
15.....16 hops and the interface is down

25. Describe features of RIPv2
Disable auto summarization
A trunk
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.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

26. Admin distance of OSPF?
A group of end stations with a common set of requirements - independent of their physical location
Autonomous System
110
Checks the source address and then permits or denies the entire protocol suite

27. Why is EIGRP considered a Hybrid routing protocol?
It combines the advantages of Link-State and Distance vector routing protocols.
32768
MAC based
Designated Router (DR) and a Back-up designated Router (BDR)

28. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
Six equal cost paths
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Only topology within their respective area.

29. Example of a Routed Protocol?
Not scalable - hard to maintain as the network grows
Every 30 minutes by default
IP
Connects the different areas

30. Spanning-Tree cost of 19
Checks the source address and then permits or denies the entire protocol suite
100Mb/s
Private: link local
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

31. What do you need to do if there are discontigous networks with EIGRP?
Ever 2 seconds
Disable auto summarization
2^n
Link-State

32. How are Frame Relay Circuits identified?

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33. By default OSPF uses what type of authentication?
Null
Distance Vector
Checks the source address and then permits or denies the entire protocol suite
Plaintext and MD5

34. An autonomous system could also be referred to as what?
Domain
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Determines the cost which is the bandwidth
Telnet connectivity - authentication and extended ACLs

35. In regards to ACL's What are the three protocols?
Every 30 Seconds
One ACL per protocol - One ACL per direction - Once ACL per interface
30-50 seconds
Adjacency

36. What type of authentication does EIGRP use?
120
MD5 and you have to enable it if you want to use it.
Private: link local
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

37. What distant vector protocols exhibit classless behavior?
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
RIPv2 and EIGRP
Loopback

38. What do area's do?
Packets are processed before they are routed to an outbound interface.
Match on all routers or it will not work
The Root bridge is the bridge with the lowest bridge ID
Reduce the link-state database and routing table

39. What is the default load balancing for RIP
4
20 seconds: 10 missed BPDU's
Plaintext and MD5
TRUE

40. What does partial refer to?
The update only includes info about the route change
120
Between areas?
Susceptible to routing loops

41. VTP Transparent Mode does what?

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42. Normal time for STP convergence
Carry's traffic for multiple VLANS
TRUE
30-50 seconds
Data Link Connection Identifier

43. What type of algorithm does RIP use?
By DLCI's
Distance Vector
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
4 times the hello interval

44. VTP Server Mode does what?

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45. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A backbone area...Also known as Area 0
Layers 1 & 2
1

46. How does Link-State work?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Each router builds a map of the network and determines the shortest path to every network.
0
IP

47. Admin distance of a connected Network?
All backup routes for destinations.
Autonomous System
DROTHER
0

48. What type of algorithm does EIGRP use?
Advance Distance Vector
Carry's traffic for multiple VLANS
Susceptible to routing loops
MAC based

49. Formula for determining Subnets
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Port based
Six equal cost paths
2^n

50. How does inbound ACL work?
2^n
Dijkstra's Algorithm
Test Firsts/ Routes Second
16