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. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
Telnet connectivity - authentication and extended ACLs
110
Aka Subnet mask


2. With OSPF - there must always be a area......
0
Supports both unequal metric load balancing and equal metric balancing.
Multiple virtual interfaces that are associated with one physical interface
RIPv2 and EIGRP


3. What type of algorithm does EIGRP use?
Carry's traffic for multiple VLANS
Advance Distance Vector
IETF
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. Can a Router exchange routing information if they are using different Routing Protocols?
No
Every 30 Seconds
The inverse of a subnet mask.
Between areas?


5. Dynamic ACL's are dependent on what?
Propagation of partial updates that are sent only to those routers that the changes affect.
1
Anycast
Telnet connectivity - authentication and extended ACLs


6. What three types of IPv6 address types are there?
Advance Distance Vector
Select the routing protocol - then specify the network.
Unicast - Multicast - Anycast
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.


7. Classful Protocols summarize
A combination of Link-state and distance vector
Automatically
MAC based
Private: link local


8. What does a trunk do?

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9. Formula for determining hosts
2^n-2
Disable auto summarization
Automatically
Convergence


10. VTP Server Mode does what?

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11. Problem with RIP
Only topology within their respective area.
Susceptible to routing loops
A backbone area...Also known as Area 0
Distance Vector


12. The time delay for a router to match a network change?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Convergence
Propagation of partial updates that are sent only to those routers that the changes affect.
A combination of Link-state and distance vector


13. What are the three LMI standards
Cisco - ANSI - Q.933A
20 seconds: 10 missed BPDU's
Designated Router (DR) and a Back-up designated Router (BDR)
Loopback


14. How often are periodic updates sent out via RIP
Multiple virtual interfaces that are associated with one physical interface
120
The update only includes info about the route change
Every 30 Seconds


15. How does an Extended ACL work?
IP
Checks the source and destination address then permits or denies specific protocols
Distance Vector
By DLCI's


16. In regards to troubleshooting OSPF what should you check?
A trunk
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Different Autonomous Systems
Link-State


17. An OSPF neighbor relationship can also be called what?
The update only includes info about the route change
Port based
Adjacency
Scalable and fast convergence


18. How long is the dead interval
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
4 times the hello interval
224.0.0.10
Link-State


19. Routing protocol is what?
224.0.0.5
RIPv2 and EIGRP
A protocol on how to communicate with other routers
224.0.0.10


20. How does EIGRP work with regards to Load Balancing
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Plaintext and MD5
A combination of Link-state and distance vector
Supports both unequal metric load balancing and equal metric balancing.


21. OSPF will elect a what?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Designated Router (DR) and a Back-up designated Router (BDR)
0
To select the best path to the destination


22. Why is EIGRP considered a Hybrid routing protocol?
The update only includes info about the route change
Every 10 Seconds
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
It combines the advantages of Link-State and Distance vector routing protocols.


23. For a VLAN to span across multiple switches What is required?
Null
Each router builds a map of the network and determines the shortest path to every network.
A trunk
A layer 3 switch or router


24. What type of algorithm does RIP use?
4
Distance Vector
Link-State
Plaintext and MD5


25. Why is it important to have a loopback address when using OSPF?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Connects the different areas
Dijkstra's Algorithm
A link is an interface on a router


26. What is needed to pass traffic from one VLAN to another?
Not scalable - hard to maintain as the network grows
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
One ACL per protocol - One ACL per direction - Once ACL per interface
A layer 3 switch or router


27. The no auto-summary command does what?
Multicast
Forces protocols to behave as if they were classless
By DLCI's
10Mb/s


28. What is the default Bridge priority?
Maximizing address efficiency - organization - summarization
2^n-2
32768
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.


29. What does DLCI stand for?
IETF
MAC based
Private: link local
Data Link Connection Identifier


30. Explain how routing loops occur with RIP?
...
Null
Susceptible to routing loops
Every 5 seconds


31. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
...
1.) Enter the Routing Manually 2.) Use Dymamic Routing
If int status is UP/UP..Check to make sure OSPF is enabled on the interface


32. How often are OSPF hello packets sent out?
Autonomous System
1
Associating the network address with a local DLCI.
Every 10 seconds


33. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
120
The lower MAC address


34. Spanning-Tree cost of 100
Ever 2 seconds
10Mb/s
RIPv2 & EIGRP
Forces protocols to behave as if they were classless


35. Purpose of a Routing Protocol?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
A backbone area...Also known as Area 0
224.0.0.10
Packet Header


36. The AS number must what?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Match on all routers or it will not work
Between areas?
IETF


37. What are two OSPF authentication methods?
Plaintext and MD5
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Domain
TRUE


38. What algorithm does EIGRP use?
Checks the source and destination address then permits or denies specific protocols
The Diffusing Update Algorithm (DUAL)
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
MD5 and you have to enable it if you want to use it.


39. How are Frame Relay Circuits identified?

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40. Benefits of OSPF?
Scalable and fast convergence
Checks the source address and then permits or denies the entire protocol suite
224.0.0.10
16


41. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
120
TRUE
Test Firsts/ Routes Second
20 seconds: 10 missed BPDU's


42. Problem with static routes
Convergence
Every 5 seconds
RIPv2 and EIGRP
Not scalable - hard to maintain as the network grows


43. What is an ABR
120
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
110
Area Border Router


44. With OSPF - what must be defined?
A layer 3 switch or router
Associating the network address with a local DLCI.
A backbone area...Also known as Area 0
Every 30 Seconds


45. What is the Wildcard mask
The inverse of a subnet mask.
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.
It is never useful to send information about a route back in the direction from which the original info came.
Make sure you are in interface mode - then use this command ip access-group 1 out/in


46. What is one to many?
A layer 3 switch or router
One ACL per protocol - One ACL per direction - Once ACL per interface
RIPv2 & EIGRP
Multicast


47. VTP Client Mode does what?

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48. What two parameters does EIGRP use to determine the best route?
Supports both unequal metric load balancing and equal metric balancing.
Checks the source address and then permits or denies the entire protocol suite
Advertised Distance & Feasible distance
Six equal cost paths


49. Max_age time for BPDU's

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50. With ACL's where does the router extract information
The inverse of a subnet mask.
Supports both unequal metric load balancing and equal metric balancing.
Layers 1 & 2
Packet Header