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CCNA

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. With ACL's where does the router extract information
TRUE
Select the routing protocol - then specify the network.
Packet Header
0

2. What do area's do?
MD5 and you have to enable it if you want to use it.
Advance Distance Vector
Connects the different areas
Reduce the link-state database and routing table

3. By default OSPF uses what type of authentication?
TRUE
16
Null
Individual or group IP's

4. What do you need to do if there are discontigous networks with EIGRP?
Disable auto summarization
Area Border Router
Dijkstra's Algorithm
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

5. How does an outbound ACL work?
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Routes First/ Tests second
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
For line vty 0 4

6. Problem with static routes
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
32768
Not scalable - hard to maintain as the network grows
224.0.0.5

7. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
Multicast
Loopback
For line vty 0 4

8. Routers are used for what?
To select the best path to the destination
Convergence
It combines the advantages of Link-State and Distance vector routing protocols.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

9. What are subinterfaces?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
90
Multiple virtual interfaces that are associated with one physical interface
Select the routing protocol - then specify the network.

10. Admin distance of RIPv2
The Root bridge is the bridge with the lowest bridge ID
Connects the different areas
A permit statement
120

11. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
The lower MAC address
It is the signaling standard that maintains connection and statues between the DCE and DTE
Every 10 seconds
A backbone area...Also known as Area 0

12. Admin distance of a connected Network?
Every 5 seconds
Unspecified
0
MAC based

13. How many hops are allowed with RIP?
15.....16 hops and the interface is down
EIGRP - OSPF - RIP
Make sure you are in interface mode - then use this command ip access-group 1 out/in
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.

14. Static VLAN is what?
Port based
Link-State
4 times the hello interval
Unicast - Multicast - Anycast

15. Explain how routing loops occur with RIP?
Telnet connectivity - authentication and extended ACLs
...
90
A combination of Link-state and distance vector

16. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
Designated Router (DR) and a Back-up designated Router (BDR)
4
By DLCI's

17. In Link state terminology - What is a link?
TRUE
Susceptible to routing loops
Multiple virtual interfaces that are associated with one physical interface
A link is an interface on a router

18. What are two statements that are true of IPv6 address representation?
The Root bridge is the bridge with the lowest bridge ID
Every 5 seconds
Unspecified
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

19. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
DROTHER
One ACL per protocol - One ACL per direction - Once ACL per interface
Advance Distance Vector

20. Can a Router exchange routing information if they are using different Routing Protocols?
Cisco - ANSI - Q.933A
224.0.0.5
No
Plaintext and MD5

21. Every ACL will need what?
0
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A permit statement
Private: link local

22. Normal time for STP convergence
Propagation of partial updates that are sent only to those routers that the changes affect.
30-50 seconds
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
2^n

23. Dynamic ACL's are dependent on what?
Telnet connectivity - authentication and extended ACLs
A group of end stations with a common set of requirements - independent of their physical location
Select the routing protocol - then specify the network.
224.0.0.10

24. What is the spilt horizon rule?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
It is never useful to send information about a route back in the direction from which the original info came.
10Mb/s
...

25. What is the purpose of LMI
It is the signaling standard that maintains connection and statues between the DCE and DTE
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
0
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

26. Describe an Outbound ACL
110
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Cisco - ANSI - Q.933A
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

27. What is the default Bridge priority?
Packet Header
32768
View
Bandwidth & Delay

28. What is one to nearest
Designated Router (DR) and a Back-up designated Router (BDR)
Anycast
IP
110

29. What is ::1
Scalable and fast convergence
Loopback
RIPv2 and EIGRP
Area Border Router

30. How are Frame Relay Circuits identified?

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31. With OSPF - there must always be a area......
Between areas?
DROTHER
Test Firsts/ Routes Second
0

32. What does a trunk do?

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33. What address is FE80:/10
Maximizing address efficiency - organization - summarization
Packets are processed before they are routed to an outbound interface.
Private: link local
10Mb/s

34. Admin distance of OSPF?
110
Every 5 seconds
10Mb/s
Ever 2 seconds

35. Max_age time for BPDU's

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36. What Layer does Frame Relay operate at?
IETF
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
All backup routes for destinations.
Layers 1 & 2

37. Describe features of RIPv1
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
A permit statement
DROTHER

38. Benefits of OSPF?
Area Border Router
16
Scalable and fast convergence
Convergence

39. What is ::
Unspecified
Link-State
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Six equal cost paths

40. What are non designated routers called?
Unicast - Multicast - Anycast
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
DROTHER
1

41. 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.
10Mb/s
A backbone area...Also known as Area 0
Loopback

42. What is an ABR
Area Border Router
Only with Cisco IOS software release 12.3 (2) T
Convergence
A link is an interface on a router

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

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44. In regards to ACL's What are the three protocols?
Distance Vector
To select the best path to the destination
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
One ACL per protocol - One ACL per direction - Once ACL per interface

45. What three types of IPv6 address types are there?
Data Link Connection Identifier
Unicast - Multicast - Anycast
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Every 10 Seconds

46. How does the SPF determine the shortest path?
Determines the cost which is the bandwidth
Dijkstra's Algorithm
Multiple virtual interfaces that are associated with one physical interface
Unspecified

47. What type of algorithm does RIP use?
Distance Vector
16
MAC based
Packets are processed before they are routed to an outbound interface.

48. How does inbound ACL work?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A protocol on how to communicate with other routers
120
Test Firsts/ Routes Second

49. How often are BPDU's sent?
...
20 seconds: 10 missed BPDU's
4 times the hello interval
Ever 2 seconds

50. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Associating the network address with a local DLCI.
Reduce the link-state database and routing table
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

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