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. For an adjacency to occur what do the routers have to agree on?
By DLCI's
1Gb/s
Propagation of partial updates that are sent only to those routers that the changes affect.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.


2. Can a Router exchange routing information if they are using different Routing Protocols?
It is never useful to send information about a route back in the direction from which the original info came.
No
Unspecified
A trunk


3. How often are BPDU's sent?
The lower MAC address
Ever 2 seconds
RIPv2 and EIGRP
Every 10 seconds


4. Dynamic ACL's are dependent on what?
Telnet connectivity - authentication and extended ACLs
Link-State
Carry's traffic for multiple VLANS
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication


5. What is OSPF multicast address?
Designated Router (DR) and a Back-up designated Router (BDR)
224.0.0.5
Select the routing protocol - then specify the network.
Area Border Router


6. What algorithm does EIGRP use?
Cisco - ANSI - Q.933A
Multicast
The Diffusing Update Algorithm (DUAL)
The lower MAC address


7. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Reduce the link-state database and routing table
View
Every 10 Seconds
RIPv2 and EIGRP


8. What are subinterfaces?
Scalable and fast convergence
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Multiple virtual interfaces that are associated with one physical interface
Susceptible to routing loops


9. Routers are used for what?
Advance Distance Vector
To select the best path to the destination
32768
Ever 2 seconds


10. What type of algorithm does OSPF & IS-IS use?
Link-State
30-50 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Aka Subnet mask


11. What is the purpose of LMI
All backup routes for destinations.
It is the signaling standard that maintains connection and statues between the DCE and DTE
30-50 seconds
TRUE


12. What is one to many?
Updates all DROTHER Routers when a change occurs
Automatically
Multicast
Adjacency


13. What type of algorithm does RIP use?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
A backbone area...Also known as Area 0
2^n-2
Distance Vector


14. In regards to troubleshooting OSPF what should you check?
Dijkstra's Algorithm
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
120
A backbone area...Also known as Area 0


15. Who designed OSPF?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
IETF
Six equal cost paths
A link is an interface on a router


16. How do you configure OSPF
Between areas?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
TRUE


17. In Link state terminology - What is a link?
224.0.0.5
RIPv2 and EIGRP
A link is an interface on a router
The update only includes info about the route change


18. Max_age time for BPDU's

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19. Why is this done?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
IP
To reduce OSPF traffic
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


20. How does inbound ACL work?
Multicast
Test Firsts/ Routes Second
Propagation of partial updates that are sent only to those routers that the changes affect.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication


21. Static VLAN is what?
Port based
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
1Gb/s
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.


22. When do you use Access-Class
For line vty 0 4
Aka Subnet mask
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
The update only includes info about the route change


23. The AS number must what?
Match on all routers or it will not work
Ever 2 seconds
Layers 1 & 2
View


24. VTP Client Mode does what?

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25. What type of authentication does EIGRP use?
100Mb/s
MD5 and you have to enable it if you want to use it.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Inter-VLAN routing


26. Problem with static routes
Convergence
Select the routing protocol - then specify the network.
Not scalable - hard to maintain as the network grows
Unspecified


27. Explain how routing loops occur with RIP?
To select the best path to the destination
For line vty 0 4
...
Layers 1 & 2


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

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29. 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.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
16
224.0.0.10


30. How does the SPF determine the shortest path?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Determines the cost which is the bandwidth
Autonomous System
Not scalable - hard to maintain as the network grows


31. What two parameters does EIGRP use to determine the best route?
Determines the cost which is the bandwidth
Plaintext and MD5
224.0.0.10
Advertised Distance & Feasible distance


32. How are Frame Relay Circuits identified?

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33. Why is it important to have a loopback address when using OSPF?
Designated Router (DR) and a Back-up designated Router (BDR)
32768
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Unicast - Multicast - Anycast


34. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Layers 1 & 2
TRUE
Loopback
4


35. Dynamic VLAN is what?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Distance Vector
Associating the network address with a local DLCI.
MAC based


36. An autonomous system could also be referred to as what?
By DLCI's
Domain
4
1Gb/s


37. How do you configure a sub interface?
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
0
No
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration


38. Summarization of network information usually occurs where?
Multiple virtual interfaces that are associated with one physical interface
90
Between areas?
...


39. OSPF routes packets within a single?
View
Autonomous System
Port based
The inverse of a subnet mask.


40. Break down the word Link-State

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41. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
A combination of Link-state and distance vector
2^n-2
Inter-VLAN routing


42. The advantages of VLSM
Autonomous System
It is the signaling standard that maintains connection and statues between the DCE and DTE
100Mb/s
Maximizing address efficiency - organization - summarization


43. Spanning-Tree cost of 100
Forces protocols to behave as if they were classless
Area Border Router
DROTHER
10Mb/s


44. Describe an Outbound ACL
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
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
IP
Adjacency


45. Exterior Gateway Protocols are designed for use between
Unicast - Multicast - Anycast
Match on all routers or it will not work
20 seconds: 10 missed BPDU's
Different Autonomous Systems


46. Spanning-Tree cost of 19
Domain
TRUE
100Mb/s
90


47. What is the default load balancing for RIP
Six equal cost paths
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
4
Associating the network address with a local DLCI.


48. What is the spilt horizon rule?
The Root bridge is the bridge with the lowest bridge ID
15.....16 hops and the interface is down
It is never useful to send information about a route back in the direction from which the original info came.
10Mb/s


49. How many hops are allowed with RIP?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
15.....16 hops and the interface is down
4


50. Spanning-Tree coast of 4
Every 5 seconds
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Reduce the link-state database and routing table
1Gb/s