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. In regards to ACL's What are the three protocols?
One ACL per protocol - One ACL per direction - Once ACL per interface
Checks the source and destination address then permits or denies specific protocols
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
2^n


2. Admin distance of a Static Route?
2^n-2
1
224.0.0.5
30-50 seconds


3. What are the two ways routers can learn about the destination information?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
1.) Enter the Routing Manually 2.) Use Dymamic Routing
90
The inverse of a subnet mask.


4. What two classless protocols act classful by default?
All backup routes for destinations.
MD5 and you have to enable it if you want to use it.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
RIPv2 & EIGRP


5. Explain OSPF

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6. How does the SPF determine the shortest path?
4 times the hello interval
Only with Cisco IOS software release 12.3 (2) T
Determines the cost which is the bandwidth
Bandwidth & Delay


7. Admin distance of RIPv2
120
2^n
To reduce OSPF traffic
Packets are processed before they are routed to an outbound interface.


8. What are non designated routers called?
DROTHER
Dijkstra's Algorithm
1
2^n-2


9. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Packets are processed before they are routed to an outbound interface.
RIPv2 and EIGRP
Make sure you are in interface mode - then use this command ip access-group 1 out/in
16


10. Can a Router exchange routing information if they are using different Routing Protocols?
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
EIGRP - OSPF - RIP
No
Determines the cost which is the bandwidth


11. What is needed to pass traffic from one VLAN to another?
Dijkstra's Algorithm
A layer 3 switch or router
Multiple virtual interfaces that are associated with one physical interface
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.


12. Describe a Inbound ACL
Checks the source and destination address then permits or denies specific protocols
Associating the network address with a local DLCI.
Packets are processed before they are routed to an outbound interface.
The Root bridge is the bridge with the lowest bridge ID


13. Exterior Gateway Protocols are designed for use between
MAC based
Different Autonomous Systems
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.
A protocol on how to communicate with other routers


14. 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
...
Only topology within their respective area.
IP


15. What is one to many?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
2^n
Multicast
All backup routes for destinations.


16. When placing ACL's in the Network...Do what?

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17. Rip is capable of load balancing over as many as?
Supports both unequal metric load balancing and equal metric balancing.
Six equal cost paths
100Mb/s
Adjacency


18. What do area's do?
1
A group of end stations with a common set of requirements - independent of their physical location
224.0.0.5
Reduce the link-state database and routing table


19. Static VLAN is what?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.
Port based
20 seconds: 10 missed BPDU's


20. What type of algorithm does EIGRP use?
MAC based
Six equal cost paths
Advance Distance Vector
Every 5 seconds


21. What does the back bone router do?
All backup routes for destinations.
Connects the different areas
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
4


22. Why is this done?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
To reduce OSPF traffic
Ever 2 seconds
1Gb/s


23. What algorithm does EIGRP use?
Unicast - Multicast - Anycast
View
The Diffusing Update Algorithm (DUAL)
By DLCI's


24. Example of a Routed Protocol?
Cisco - ANSI - Q.933A
Only topology within their respective area.
IP
The update only includes info about the route change


25. VTP Server Mode does what?

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26. How do you configure a sub interface?
Bandwidth & Delay
Propagation of partial updates that are sent only to those routers that the changes affect.
Unicast - Multicast - Anycast
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


27. What does EIGRP use to calculate it's metric?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Bandwidth & Delay
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available


28. Formula for determining hosts
2^n-2
View
MAC based
Cisco - ANSI - Q.933A


29. A router running EIGRP will store what?
100Mb/s
Every 30 Seconds
All backup routes for destinations.
Null


30. What is the Shortest Path First algorithm also called?

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31. How are Frame Relay Circuits identified?

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32. Describe features of RIPv2
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Layers 1 & 2
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Only topology within their respective area.


33. What is passing VLAN traffic to another called?
90
Inter-VLAN routing
To reduce OSPF traffic
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers


34. How often does a router send link-state advertisements?
DROTHER
Every 30 minutes by default
4
110


35. For a VLAN to span across multiple switches What is required?
90
Match on all routers or it will not work
Ever 2 seconds
A trunk


36. Classful Protocols summarize
Bandwidth & Delay
Automatically
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.


37. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
The lower MAC address
IETF
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
RIPv2 & EIGRP


38. With OSPF - what must be defined?
120
Associating the network address with a local DLCI.
A backbone area...Also known as Area 0
To select the best path to the destination


39. Admin distance of OSPF?
Every 5 seconds
110
A link is an interface on a router
Private: link local


40. Routing protocol is what?
RIPv2 & EIGRP
A protocol on how to communicate with other routers
Telnet connectivity - authentication and extended ACLs
2^n-2


41. Wildcard masks filter

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42. The no auto-summary command does what?
30-50 seconds
Forces protocols to behave as if they were classless
EIGRP - OSPF - RIP
Updates all DROTHER Routers when a change occurs


43. Explain how routing loops occur with RIP?
90
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
...
1


44. With OSPF - there must always be a area......
Adjacency
...
Data Link Connection Identifier
0


45. What address is FE80:/10
Private: link local
The update only includes info about the route change
To select the best path to the destination
Forces protocols to behave as if they were classless


46. By default OSPF uses what type of authentication?
Convergence
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Null


47. Every ACL will need what?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A permit statement
224.0.0.10
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.


48. What is the Wildcard mask
The inverse of a subnet mask.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Select the routing protocol - then specify the network.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication


49. What is ::1
The lower MAC address
Aka Subnet mask
Loopback
Every 10 seconds


50. How does Link-State work?
Each router builds a map of the network and determines the shortest path to every network.
A link is an interface on a router
30-50 seconds
2^n-2