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. Routing protocol is what?
A protocol on how to communicate with other routers
10Mb/s
DROTHER
Carry's traffic for multiple VLANS


2. Spanning-Tree coast of 4
0
Domain
1
1Gb/s


3. What two parameters does EIGRP use to determine the best route?
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.
100Mb/s
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.


4. Can you delete individual entries in a specific ACL?
Only with Cisco IOS software release 12.3 (2) T
16
Every 10 Seconds
View


5. What distant vector protocols exhibit classless behavior?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Distance Vector
Private: link local
RIPv2 and EIGRP


6. How often are BPDU's sent?
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.
...
Ever 2 seconds
Null


7. What are the major components of OSPF troubleshooting?
Every 5 seconds
It is the signaling standard that maintains connection and statues between the DCE and DTE
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Not scalable - hard to maintain as the network grows


8. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Disable auto summarization
Bandwidth & Delay


9. Why is this done?
To reduce OSPF traffic
16
0
Every 10 Seconds


10. In frame relay What is Inverse Arp
A protocol on how to communicate with other routers
30-50 seconds
Associating the network address with a local DLCI.
MD5 and you have to enable it if you want to use it.


11. How do you apply the ACL to an interface
Make sure you are in interface mode - then use this command ip access-group 1 out/in
It is never useful to send information about a route back in the direction from which the original info came.
MAC based
Inter-VLAN routing


12. What does bounded refer to?
Propagation of partial updates that are sent only to those routers that the changes affect.
A trunk
Packet Header
1Gb/s


13. What is ::1
Loopback
10Mb/s
1
Null


14. What is ::
30-50 seconds
Dijkstra's Algorithm
Unspecified
Automatically


15. How often does a router send link-state advertisements?
...
Every 30 minutes by default
Null
Packet Header


16. What two things need to be done to enable dynamic routing?
1Gb/s
Propagation of partial updates that are sent only to those routers that the changes affect.
Select the routing protocol - then specify the network.
A layer 3 switch or router


17. When do you use Access-Class
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
For line vty 0 4
Anycast
It is never useful to send information about a route back in the direction from which the original info came.


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

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19. 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.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Telnet connectivity - authentication and extended ACLs
1


20. 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.
Designated Router (DR) and a Back-up designated Router (BDR)
Loopback
Every 10 Seconds


21. What does EIGRP use to calculate it's metric?
It is never useful to send information about a route back in the direction from which the original info came.
Disable auto summarization
Unicast - Multicast - Anycast
Bandwidth & Delay


22. Exterior Gateway Protocols are designed for use between
Checks the source address and then permits or denies the entire protocol suite
Reduce the link-state database and routing table
Different Autonomous Systems
Advertised Distance & Feasible distance


23. VTP Client Mode does what?

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24. What is one to nearest
Autonomous System
Anycast
A trunk
Every 30 Seconds


25. What do area's do?
Individual or group IP's
2^n-2
Reduce the link-state database and routing table
It combines the advantages of Link-State and Distance vector routing protocols.


26. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Match on all routers or it will not work
Dijkstra's Algorithm
Every 30 Seconds
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


27. Spanning-Tree cost of 19
Port based
2^n
100Mb/s
Because a loopback interface is always active and cannot be in a down state like a real interface can.


28. What does a trunk do?

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29. Static VLAN is what?
Port based
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.
Domain
Advertised Distance & Feasible distance


30. A router running EIGRP will store what?
All backup routes for destinations.
Susceptible to routing loops
Convergence
110


31. Who designed OSPF?
110
Data Link Connection Identifier
224.0.0.10
IETF


32. An OSPF neighbor relationship can also be called what?
No
Adjacency
MD5 and you have to enable it if you want to use it.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address


33. With OSPF - there must always be a area......
0
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Plaintext and MD5


34. Explain OSPF

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35. Admin distance of RIPv2
Every 10 Seconds
By DLCI's
120
A protocol on how to communicate with other routers


36. Formula for determining hosts
Every 30 Seconds
2^n-2
A layer 3 switch or router
Every 30 minutes by default


37. By default OSPF uses what type of authentication?
Null
Adjacency
Routes First/ Tests second
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.


38. Describe a Inbound ACL
To select the best path to the destination
A group of end stations with a common set of requirements - independent of their physical location
Packets are processed before they are routed to an outbound interface.
Six equal cost paths


39. What is one to many?
RIPv2 & EIGRP
Distance Vector
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Multicast


40. How do you configure a sub interface?
Supports both unequal metric load balancing and equal metric balancing.
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
A layer 3 switch or router
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL


41. VTP Server Mode does what?

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42. Why is EIGRP considered a Hybrid routing protocol?
Dijkstra's Algorithm
It combines the advantages of Link-State and Distance vector routing protocols.
IP
Convergence


43. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Every 10 Seconds
Data Link Connection Identifier
TRUE


44. How long is the dead interval
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
4 times the hello interval
Domain


45. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
1.) Enter the Routing Manually 2.) Use Dymamic Routing
0
TRUE
15.....16 hops and the interface is down


46. How is the root bridge determined?
Susceptible to routing loops
The Root bridge is the bridge with the lowest bridge ID
Inter-VLAN routing
Multiple virtual interfaces that are associated with one physical interface


47. How many hops are allowed with RIP?
Between areas?
15.....16 hops and the interface is down
4
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.


48. Problem with RIP
Packets are processed before they are routed to an outbound interface.
Reduce the link-state database and routing table
Susceptible to routing loops
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.


49. Describe an Outbound ACL
By DLCI's
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
RIPv2 and EIGRP
Every 10 Seconds


50. Admin distance of OSPF?
110
Aka Subnet mask
Every 5 seconds
IP