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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. Can a Router exchange routing information if they are using different Routing Protocols?
No
Carry's traffic for multiple VLANS
Anycast
Determines the cost which is the bandwidth

2. Summarization of network information usually occurs where?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
100Mb/s
15.....16 hops and the interface is down
Between areas?

3. What is ::1
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
32768
RIPv2 & EIGRP
Loopback

4. What are subinterfaces?
Only topology within their respective area.
Loopback
Multiple virtual interfaces that are associated with one physical interface
DROTHER

5. What is the purpose of LMI
It is the signaling standard that maintains connection and statues between the DCE and DTE
Plaintext and MD5
Individual or group IP's
A permit statement

6. What do area's do?
Cisco - ANSI - Q.933A
Reduce the link-state database and routing table
It combines the advantages of Link-State and Distance vector routing protocols.
...

7. What type of algorithm does OSPF & IS-IS use?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
110
Link-State
Packet Header

8. For a VLAN to span across multiple switches What is required?
A trunk
Area Border Router
224.0.0.10
Every 30 Seconds

9. What do you need to do if there are discontigous networks with EIGRP?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Aka Subnet mask
Disable auto summarization
Packet Header

10. In frame relay What is Inverse Arp
A protocol on how to communicate with other routers
DROTHER
IETF
Associating the network address with a local DLCI.

11. What is one to many?
Multicast
The inverse of a subnet mask.
TRUE
Routes First/ Tests second

12. What two things need to be done to enable dynamic routing?
Not scalable - hard to maintain as the network grows
Select the routing protocol - then specify the network.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Every 30 minutes by default

13. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Multicast
Packets are processed before they are routed to an outbound interface.
Reduce the link-state database and routing table

14. Describe a Inbound ACL
Every 30 Seconds
Different Autonomous Systems
Packets are processed before they are routed to an outbound interface.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

15. What is the default Bridge priority?
Between areas?
2^n
32768
Connects the different areas

16. How is the root bridge determined?
...
4
Every 5 seconds
The Root bridge is the bridge with the lowest bridge ID

17. Example of a Routed Protocol?
A link is an interface on a router
IP
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Layers 1 & 2

18. How often are OSPF hello packets sent out?
TRUE
Reduce the link-state database and routing table
Every 10 seconds
The Diffusing Update Algorithm (DUAL)

19. What is an ABR
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
By DLCI's
Area Border Router

20. How often are BPDU's sent?
Different Autonomous Systems
Ever 2 seconds
Packets are processed before they are routed to an outbound interface.
To select the best path to the destination

21. Spanning-Tree coast of 4
Private: link local
1Gb/s
RIPv2 and EIGRP
The update only includes info about the route change

22. How many hops are allowed with RIP?
15.....16 hops and the interface is down
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Only with Cisco IOS software release 12.3 (2) T
...

23. What is Frame Relay?
Plaintext and MD5
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Individual or group IP's

24. Problem with RIP
Susceptible to routing loops
Distance Vector
Different Autonomous Systems
Connects the different areas

25. Advance Distance Vector or Hybrid uses what?
Determines the cost which is the bandwidth
A combination of Link-state and distance vector
The Root bridge is the bridge with the lowest bridge ID
A trunk

26. How do you apply the ACL to an interface
It combines the advantages of Link-State and Distance vector routing protocols.
Susceptible to routing loops
100Mb/s
Make sure you are in interface mode - then use this command ip access-group 1 out/in

27. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Each router builds a map of the network and determines the shortest path to every network.
4
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
The lower MAC address

28. Admin distance of a connected Network?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
0
Inter-VLAN routing
32768

29. An OSPF neighbor relationship can also be called what?
To reduce OSPF traffic
Null
Dijkstra's Algorithm
Adjacency

30. What algorithm does EIGRP use?
Ever 2 seconds
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
10Mb/s
The Diffusing Update Algorithm (DUAL)

31. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
A permit statement
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Multiple virtual interfaces that are associated with one physical interface

32. What are two OSPF authentication methods?
Plaintext and MD5
Checks the source address and then permits or denies the entire protocol suite
It combines the advantages of Link-State and Distance vector routing protocols.
10Mb/s

33. Why is EIGRP considered a Hybrid routing protocol?
Reduce the link-state database and routing table
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.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

34. How long is the dead interval
4 times the hello interval
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Not scalable - hard to maintain as the network grows
0

35. Example of a Routing Protocol?
IETF
10Mb/s
A trunk
EIGRP - OSPF - RIP

36. In Link state terminology - What is a link?
A trunk
A link is an interface on a router
100Mb/s
IETF

37. How does an outbound ACL work?
Port based
Routes First/ Tests second
Designated Router (DR) and a Back-up designated Router (BDR)
All backup routes for destinations.

38. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Dijkstra's Algorithm
View
The lower MAC address
Susceptible to routing loops

39. How are Frame Relay Circuits identified?

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40. What are the major components of OSPF troubleshooting?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
110
Data Link Connection Identifier
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

41. How often are periodic updates sent out via RIP
Every 30 Seconds
4 times the hello interval
Checks the source and destination address then permits or denies specific protocols
Because a loopback interface is always active and cannot be in a down state like a real interface can.

42. An autonomous system could also be referred to as what?
Scalable and fast convergence
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Domain
4 times the hello interval

43. A router running EIGRP will store what?
Autonomous System
DROTHER
Determines the cost which is the bandwidth
All backup routes for destinations.

44. How often does a router send link-state advertisements?
A layer 3 switch or router
Unicast - Multicast - Anycast
Every 30 minutes by default
110

45. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Between areas?
A layer 3 switch or router
90
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.

46. What does the DR do?
Every 5 seconds
Updates all DROTHER Routers when a change occurs
The lower MAC address
4

47. What two parameters does EIGRP use to determine the best route?
A protocol on how to communicate with other routers
Advertised Distance & Feasible distance
Propagation of partial updates that are sent only to those routers that the changes affect.
10Mb/s

48. What does a trunk do?

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49. Formula for determining Subnets
32768
2^n
...
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

50. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
20 seconds: 10 missed BPDU's
Telnet connectivity - authentication and extended ACLs

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