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. With OSPF - there must always be a area......
0
A combination of Link-state and distance vector
Each router builds a map of the network and determines the shortest path to every network.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication


2. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Area Border Router
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A backbone area...Also known as Area 0
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


3. How many hops are allowed with RIP?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Every 30 Seconds
15.....16 hops and the interface is down
...


4. What do you need to do if there are discontigous networks with EIGRP?
Disable auto summarization
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A combination of Link-state and distance vector
TRUE


5. For an adjacency to occur what do the routers have to agree on?
16
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
15.....16 hops and the interface is down
1Gb/s


6. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
110
Select the routing protocol - then specify the network.
It combines the advantages of Link-State and Distance vector routing protocols.


7. What type of algorithm does RIP use?
Routes First/ Tests second
Dijkstra's Algorithm
Distance Vector
4


8. Describe features of RIPv1
15.....16 hops and the interface is down
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.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Routes First/ Tests second


9. VTP Client Mode does what?

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10. What is the Wildcard mask
Individual or group IP's
The inverse of a subnet mask.
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.
To reduce OSPF traffic


11. Admin distance of RIPv2
120
Test Firsts/ Routes Second
IP
By DLCI's


12. Example of a Routed Protocol?
MAC based
It is never useful to send information about a route back in the direction from which the original info came.
IP
Reduce the link-state database and routing table


13. Exterior Gateway Protocols are designed for use between
A group of end stations with a common set of requirements - independent of their physical location
Different Autonomous Systems
IP
2^n-2


14. An autonomous system could also be referred to as what?
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.
Layers 1 & 2
Domain
2^n


15. What is passing VLAN traffic to another called?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Inter-VLAN routing
15.....16 hops and the interface is down
30-50 seconds


16. Problem with RIP
224.0.0.5
A layer 3 switch or router
Susceptible to routing loops
Between areas?


17. How do you configure OSPF
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Between areas?


18. Routers are used for what?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Only topology within their respective area.
0
To select the best path to the destination


19. Example of a Routing Protocol?
Private: link local
32768
Packets are processed before they are routed to an outbound interface.
EIGRP - OSPF - RIP


20. What algorithm does EIGRP use?
A protocol on how to communicate with other routers
Individual or group IP's
Multiple virtual interfaces that are associated with one physical interface
The Diffusing Update Algorithm (DUAL)


21. 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.
16
Unspecified
Inter-VLAN routing


22. Explain OSPF

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23. How long is the dead interval
4 times the hello interval
The Diffusing Update Algorithm (DUAL)
Anycast
224.0.0.10


24. In Link state terminology - What is a link?

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25. Who designed OSPF?
A protocol on how to communicate with other routers
Plaintext and MD5
IETF
To select the best path to the destination


26. What does the back bone router do?
Connects the different areas
Supports both unequal metric load balancing and equal metric balancing.
Susceptible to routing loops
Multiple virtual interfaces that are associated with one physical interface


27. What is an Autonomous System?
Ever 2 seconds
Multicast
...
Between areas?


28. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
Six equal cost paths
Packets are processed before they are routed to an outbound interface.
Anycast


29. What is a VLAN
10Mb/s
20 seconds: 10 missed BPDU's
A group of end stations with a common set of requirements - independent of their physical location
1Gb/s


30. Benefits of OSPF?
Individual or group IP's
Scalable and fast convergence
Each router builds a map of the network and determines the shortest path to every network.
224.0.0.5


31. What is the default Bridge priority?
Different Autonomous Systems
TRUE
1.) Enter the Routing Manually 2.) Use Dymamic Routing
32768


32. How does EIGRP work with regards to Load Balancing
Supports both unequal metric load balancing and equal metric balancing.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
MD5 and you have to enable it if you want to use it.
Connects the different areas


33. How does inbound ACL work?
Test Firsts/ Routes Second
Select the routing protocol - then specify the network.
Anycast
A combination of Link-state and distance vector


34. How does an outbound ACL work?
Test Firsts/ Routes Second
Automatically
Routes First/ Tests second
TRUE


35. Max_age time for BPDU's

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36. A router running EIGRP will store what?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
4
All backup routes for destinations.
Because a loopback interface is always active and cannot be in a down state like a real interface can.


37. How often are BPDU's sent?
RIPv2 & EIGRP
15.....16 hops and the interface is down
Ever 2 seconds
A link is an interface on a router


38. What is one to many?
Multicast
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A backbone area...Also known as Area 0
...


39. Routing protocol is what?
Not scalable - hard to maintain as the network grows
All backup routes for destinations.
Test Firsts/ Routes Second
A protocol on how to communicate with other routers


40. Can a Router exchange routing information if they are using different Routing Protocols?
Autonomous System
Domain
No
Maximizing address efficiency - organization - summarization


41. Describe a Inbound ACL
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Advance Distance Vector
90
Packets are processed before they are routed to an outbound interface.


42. Nonbackbone - internal routers are aware of what topology
The inverse of a subnet mask.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Only topology within their respective area.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL


43. What is the default for equal cost paths for load balancing with OSPF?
Test Firsts/ Routes Second
Loopback
4
MD5 and you have to enable it if you want to use it.


44. VTP Transparent Mode does what?

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45. How is the root bridge determined?
A group of end stations with a common set of requirements - independent of their physical location
30-50 seconds
The Root bridge is the bridge with the lowest bridge ID
Maximizing address efficiency - organization - summarization


46. Advance Distance Vector or Hybrid uses what?
Unicast - Multicast - Anycast
A combination of Link-state and distance vector
It is never useful to send information about a route back in the direction from which the original info came.
16


47. What is the default load balancing for RIP
4
1Gb/s
224.0.0.5
MD5 and you have to enable it if you want to use it.


48. Purpose of a Routing Protocol?
Propagation of partial updates that are sent only to those routers that the changes affect.
A layer 3 switch or router
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.


49. What are the three LMI standards
Adjacency
Only with Cisco IOS software release 12.3 (2) T
Cisco - ANSI - Q.933A
Automatically


50. Admin distance of a Static Route?
Ever 2 seconds
Cisco - ANSI - Q.933A
1
A group of end stations with a common set of requirements - independent of their physical location