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. Spanning-Tree cost of 100
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
10Mb/s
Propagation of partial updates that are sent only to those routers that the changes affect.
Maximizing address efficiency - organization - summarization


2. How are Frame Relay Circuits identified?

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3. What are the three LMI standards
A link is an interface on a router
Every 30 minutes by default
Cisco - ANSI - Q.933A
Test Firsts/ Routes Second


4. Formula for determining Subnets
Layers 1 & 2
No
Telnet connectivity - authentication and extended ACLs
2^n


5. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
Bandwidth & Delay
224.0.0.10
120


6. OSPF routes packets within a single?
Private: link local
A backbone area...Also known as Area 0
Autonomous System
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


7. Spanning-Tree coast of 4
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
1Gb/s
Autonomous System
Convergence


8. A router running EIGRP will store what?
Maximizing address efficiency - organization - summarization
One ACL per protocol - One ACL per direction - Once ACL per interface
All backup routes for destinations.
MAC based


9. Summarization of network information usually occurs where?
4
Determines the cost which is the bandwidth
0
Between areas?


10. What does the DR do?
Updates all DROTHER Routers when a change occurs
A backbone area...Also known as Area 0
4 times the hello interval
Autonomous System


11. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
TRUE
IETF
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.


12. Describe features of RIPv1
0
One ACL per protocol - One ACL per direction - Once ACL per interface
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication


13. With ACL's where does the router extract information
The inverse of a subnet mask.
TRUE
Every 30 minutes by default
Packet Header


14. How does Link-State work?
Between areas?
Susceptible to routing loops
Each router builds a map of the network and determines the shortest path to every network.
Layers 1 & 2


15. What is the spilt horizon rule?
It is never useful to send information about a route back in the direction from which the original info came.
15.....16 hops and the interface is down
Supports both unequal metric load balancing and equal metric balancing.
Maximizing address efficiency - organization - summarization


16. What are two statements that are true of IPv6 address representation?
IP
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
EIGRP - OSPF - RIP
...


17. With OSPF - what must be defined?
Aka Subnet mask
10Mb/s
Null
A backbone area...Also known as Area 0


18. How often does a router send link-state advertisements?
Private: link local
Different Autonomous Systems
Every 30 minutes by default
The update only includes info about the route change


19. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
IETF
To reduce OSPF traffic
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


20. For an adjacency to occur what do the routers have to agree on?
Loopback
Every 30 Seconds
Connects the different areas
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.


21. What two classless protocols act classful by default?
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.
Autonomous System
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
RIPv2 & EIGRP


22. Max_age time for BPDU's

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23. The advantages of VLSM
IP
2^n-2
Maximizing address efficiency - organization - summarization
Inter-VLAN routing


24. How does inbound ACL work?
Test Firsts/ Routes Second
A combination of Link-state and distance vector
RIPv2 and EIGRP
Area Border Router


25. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
TRUE
Updates all DROTHER Routers when a change occurs
A link is an interface on a router
16


26. What Layer does Frame Relay operate at?
Every 5 seconds
A trunk
Layers 1 & 2
IP


27. What does partial refer to?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
The update only includes info about the route change
32768
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


28. The AS number must what?
Advertised Distance & Feasible distance
32768
Individual or group IP's
Match on all routers or it will not work


29. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
Checks the source address and then permits or denies the entire protocol suite
Updates all DROTHER Routers when a change occurs
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0


30. Admin distance of EIGRP?
A combination of Link-state and distance vector
Port based
90
4 times the hello interval


31. What is passing VLAN traffic to another called?
The Root bridge is the bridge with the lowest bridge ID
Convergence
2^n
Inter-VLAN routing


32. In regards to ACL's What are the three protocols?
224.0.0.5
All backup routes for destinations.
One ACL per protocol - One ACL per direction - Once ACL per interface
Each router builds a map of the network and determines the shortest path to every network.


33. What are the two ways routers can learn about the destination information?
RIPv2 & EIGRP
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Every 10 seconds


34. Exterior Gateway Protocols are designed for use between
32768
Unspecified
Disable auto summarization
Different Autonomous Systems


35. Wildcard masks filter

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36. In regards to troubleshooting OSPF what should you check?
Inter-VLAN routing
Advance Distance Vector
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


37. Benefits of OSPF?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
4
Scalable and fast convergence


38. Routing protocol is what?
Not scalable - hard to maintain as the network grows
Multicast
A protocol on how to communicate with other routers
1.) Enter the Routing Manually 2.) Use Dymamic Routing


39. How does an Extended ACL work?
Reduce the link-state database and routing table
Every 30 minutes by default
224.0.0.5
Checks the source and destination address then permits or denies specific protocols


40. How do you configure OSPF
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Every 10 seconds
Each router builds a map of the network and determines the shortest path to every network.


41. With OSPF - there must always be a area......
Connects the different areas
0
Dijkstra's Algorithm
1Gb/s


42. Example of a Routed Protocol?
Null
IP
16
4 times the hello interval


43. What are non designated routers called?
Only topology within their respective area.
1Gb/s
The Root bridge is the bridge with the lowest bridge ID
DROTHER


44. What is ::
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
A layer 3 switch or router
Designated Router (DR) and a Back-up designated Router (BDR)
Unspecified


45. VTP Client Mode does what?

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46. Classful Protocols summarize
Private: link local
Automatically
Reduce the link-state database and routing table
16


47. What is an ABR
Area Border Router
Between areas?
The update only includes info about the route change
Ever 2 seconds


48. How many hops are allowed with RIP?
Propagation of partial updates that are sent only to those routers that the changes affect.
IP
Null
15.....16 hops and the interface is down


49. VTP Transparent Mode does what?

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50. Problem with RIP
RIPv2 and EIGRP
Designated Router (DR) and a Back-up designated Router (BDR)
Susceptible to routing loops
All backup routes for destinations.