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CCNA

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. Admin distance of EIGRP?
90
Packet Header
Domain
All backup routes for destinations.

2. Can a Router exchange routing information if they are using different Routing Protocols?
No
Every 30 minutes by default
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
120

3. What is an ABR
Connects the different areas
4
Routes First/ Tests second
Area Border Router

4. How does EIGRP work with regards to Load Balancing
...
To select the best path to the destination
Supports both unequal metric load balancing and equal metric balancing.
Layers 1 & 2

5. VTP Server Mode does what?

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6. What is an Autonomous System?
Every 30 minutes by default
...
A link is an interface on a router
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

7. For a VLAN to span across multiple switches What is required?
A trunk
Dijkstra's Algorithm
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Unspecified

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

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9. Who designed OSPF?
A trunk
1.) Enter the Routing Manually 2.) Use Dymamic Routing
IETF
Advance Distance Vector

10. The AS number must what?
224.0.0.5
Match on all routers or it will not work
Autonomous System
Scalable and fast convergence

11. How many hops are allowed with RIP?
15.....16 hops and the interface is down
Routes First/ Tests second
120
Checks the source and destination address then permits or denies specific protocols

12. In regards to troubleshooting OSPF what should you check?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Between areas?
Match on all routers or it will not work
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

13. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
The Root bridge is the bridge with the lowest bridge ID
16
110
TRUE

14. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Null
Telnet connectivity - authentication and extended ACLs
16
2^n-2

15. What Layer does Frame Relay operate at?
Layers 1 & 2
RIPv2 and EIGRP
MD5 and you have to enable it if you want to use it.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

16. Exterior Gateway Protocols are designed for use between
A permit statement
Different Autonomous Systems
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
EIGRP - OSPF - RIP

17. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
IETF
0
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.
224.0.0.10

18. What does the DR do?
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.
TRUE
Every 30 Seconds
Updates all DROTHER Routers when a change occurs

19. What is the default Bridge priority?
Checks the source address and then permits or denies the entire protocol suite
Area Border Router
32768
4 times the hello interval

20. Formula for determining Subnets
Propagation of partial updates that are sent only to those routers that the changes affect.
Unicast - Multicast - Anycast
Autonomous System
2^n

21. What is the dead interval
Every 30 Seconds
Updates all DROTHER Routers when a change occurs
Carry's traffic for multiple VLANS
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

22. What type of algorithm does RIP use?
Multicast
Distance Vector
0
One ACL per protocol - One ACL per direction - Once ACL per interface

23. What is prefix length?
Aka Subnet mask
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
224.0.0.10
To select the best path to the destination

24. What are two OSPF authentication methods?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
4
Plaintext and MD5
15.....16 hops and the interface is down

25. How does an outbound ACL work?
1Gb/s
Routes First/ Tests second
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.
Autonomous System

26. What type of algorithm does OSPF & IS-IS use?
Aka Subnet mask
Link-State
16
Advance Distance Vector

27. Normal time for STP convergence
1Gb/s
Port based
30-50 seconds
Routes First/ Tests second

28. Admin distance of OSPF?
EIGRP - OSPF - RIP
It combines the advantages of Link-State and Distance vector routing protocols.
110
Packets are processed before they are routed to an outbound interface.

29. Benefits of OSPF?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
DROTHER
Inter-VLAN routing
Scalable and fast convergence

30. What is passing VLAN traffic to another called?
A group of end stations with a common set of requirements - independent of their physical location
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
32768
Inter-VLAN routing

31. In regards to ACL's What are the three protocols?
1
To reduce OSPF traffic
No
One ACL per protocol - One ACL per direction - Once ACL per interface

32. What three types of IPv6 address types are there?
Unicast - Multicast - Anycast
Domain
Forces protocols to behave as if they were classless
1Gb/s

33. Break down the word Link-State

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34. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
The update only includes info about the route change
Advertised Distance & Feasible distance
Port based

35. Routing protocol is what?
Susceptible to routing loops
16
A protocol on how to communicate with other routers
IP

36. Example of a Routing Protocol?
EIGRP - OSPF - RIP
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Packets are processed before they are routed to an outbound interface.
A protocol on how to communicate with other routers

37. How do you apply the ACL to an interface
224.0.0.5
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Updates all DROTHER Routers when a change occurs
A permit statement

38. Classful Protocols summarize
4
Checks the source address and then permits or denies the entire protocol suite
10Mb/s
Automatically

39. What are the three LMI standards
A permit statement
TRUE
It is never useful to send information about a route back in the direction from which the original info came.
Cisco - ANSI - Q.933A

40. What is one to nearest
Anycast
Connects the different areas
All backup routes for destinations.
0

41. What is ::
Unspecified
Only topology within their respective area.
Every 5 seconds
30-50 seconds

42. With ACL's where does the router extract information
Carry's traffic for multiple VLANS
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Packet Header
...

43. How often are periodic updates sent out via RIP
2^n
Every 30 Seconds
32768
RIPv2 & EIGRP

44. Example of a Routed Protocol?
Individual or group IP's
IP
Plaintext and MD5
Reduce the link-state database and routing table

45. How often are LMI's sent out?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
TRUE
2^n-2
Every 10 Seconds

46. What does DLCI stand for?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Multicast
Every 30 minutes by default
Data Link Connection Identifier

47. Describe features of RIPv2
Autonomous System
Between areas?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Only with Cisco IOS software release 12.3 (2) T

48. Why is it important to have a loopback address when using OSPF?
Inter-VLAN routing
Maximizing address efficiency - organization - summarization
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

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

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50. How often are BPDU's sent?
Multiple virtual interfaces that are associated with one physical interface
224.0.0.5
Ever 2 seconds
Between areas?

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