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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. Nonbackbone - internal routers are aware of what topology
32768
Only topology within their respective area.
Aka Subnet mask
Routes First/ Tests second

2. What is Frame Relay?
Anycast
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
A group of end stations with a common set of requirements - independent of their physical location
Updates all DROTHER Routers when a change occurs

3. Describe a Inbound ACL
Packets are processed before they are routed to an outbound interface.
Reduce the link-state database and routing table
TRUE
Between areas?

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

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5. Admin distance of a Static Route?
1
Because a loopback interface is always active and cannot be in a down state like a real interface can.
It is the signaling standard that maintains connection and statues between the DCE and DTE
Match on all routers or it will not work

6. How does the SPF determine the shortest path?
Determines the cost which is the bandwidth
Every 10 seconds
Cisco - ANSI - Q.933A
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

7. OSPF routes packets within a single?
Distance Vector
To reduce OSPF traffic
Autonomous System
Designated Router (DR) and a Back-up designated Router (BDR)

8. What is passing VLAN traffic to another called?
1
Aka Subnet mask
Port based
Inter-VLAN routing

9. What is the dead interval
90
The inverse of a subnet mask.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Different Autonomous Systems

10. How often are LMI's sent out?
Layers 1 & 2
Every 10 Seconds
Data Link Connection Identifier
Because a loopback interface is always active and cannot be in a down state like a real interface can.

11. Problem with RIP
Susceptible to routing loops
A permit statement
20 seconds: 10 missed BPDU's
Packet Header

12. VTP Transparent Mode does what?

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13. What type of algorithm does EIGRP use?
Each router builds a map of the network and determines the shortest path to every network.
Private: link local
Advance Distance Vector
224.0.0.5

14. How do you configure a sub interface?
Plaintext and MD5
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
Bandwidth & Delay
Updates all DROTHER Routers when a change occurs

15. What does the DR do?
Every 10 Seconds
Updates all DROTHER Routers when a change occurs
16
Not scalable - hard to maintain as the network grows

16. What does a trunk do?

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17. With ACL's where does the router extract information
Multicast
View
Packet Header
The lower MAC address

18. Who designed OSPF?
IETF
Every 30 minutes by default
Unicast - Multicast - Anycast
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

19. How long is the dead interval
4 times the hello interval
The inverse of a subnet mask.
15.....16 hops and the interface is down
10Mb/s

20. Describe features of RIPv2
TRUE
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Dijkstra's Algorithm
Private: link local

21. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Not scalable - hard to maintain as the network grows
2^n
View

22. In regards to ACL's What are the three protocols?
By DLCI's
TRUE
One ACL per protocol - One ACL per direction - Once ACL per interface
Associating the network address with a local DLCI.

23. Spanning-Tree coast of 4
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
By DLCI's
1Gb/s
...

24. How does an outbound ACL work?
Routes First/ Tests second
15.....16 hops and the interface is down
A backbone area...Also known as Area 0
Because a loopback interface is always active and cannot be in a down state like a real interface can.

25. What does bounded refer to?
The Diffusing Update Algorithm (DUAL)
Propagation of partial updates that are sent only to those routers that the changes affect.
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Area Border Router

26. What does the back bone router do?
TRUE
Area Border Router
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Connects the different areas

27. Routing protocol is what?
A protocol on how to communicate with other routers
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Domain

28. Admin distance of RIPv2
120
Data Link Connection Identifier
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
0

29. Admin distance of a connected Network?
DROTHER
0
110
Match on all routers or it will not work

30. How many hops are allowed with RIP?
One ACL per protocol - One ACL per direction - Once ACL per interface
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
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.
15.....16 hops and the interface is down

31. An OSPF neighbor relationship can also be called what?
Adjacency
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
10Mb/s
Unicast - Multicast - Anycast

32. What is the spilt horizon rule?
Updates all DROTHER Routers when a change occurs
It is never useful to send information about a route back in the direction from which the original info came.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Aka Subnet mask

33. Advance Distance Vector or Hybrid uses what?
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
A combination of Link-state and distance vector
Every 30 minutes by default
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

34. Classful Protocols summarize
Determines the cost which is the bandwidth
Automatically
Data Link Connection Identifier
Convergence

35. What two things need to be done to enable dynamic routing?
Select the routing protocol - then specify the network.
Determines the cost which is the bandwidth
Checks the source address and then permits or denies the entire protocol suite
Supports both unequal metric load balancing and equal metric balancing.

36. For an adjacency to occur what do the routers have to agree on?
10Mb/s
To reduce OSPF traffic
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

37. What two parameters does EIGRP use to determine the best route?
0
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Advertised Distance & Feasible distance
TRUE

38. Every ACL will need what?
A permit statement
Every 5 seconds
Convergence
Susceptible to routing loops

39. What do area's do?
224.0.0.5
Reduce the link-state database and routing table
It is the signaling standard that maintains connection and statues between the DCE and DTE
IP

40. How does EIGRP work with regards to Load Balancing
The update only includes info about the route change
Cisco - ANSI - Q.933A
MAC based
Supports both unequal metric load balancing and equal metric balancing.

41. How do you apply the ACL to an interface
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
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
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

42. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
The Diffusing Update Algorithm (DUAL)
Every 30 Seconds
16
One ACL per protocol - One ACL per direction - Once ACL per interface

43. Explain how routing loops occur with RIP?
Select the routing protocol - then specify the network.
...
View
Unspecified

44. How does an Extended ACL work?
Autonomous System
Select the routing protocol - then specify the network.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Checks the source and destination address then permits or denies specific protocols

45. What are two statements that are true of IPv6 address representation?
1Gb/s
Maximizing address efficiency - organization - summarization
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Cisco - ANSI - Q.933A

46. What is the default for equal cost paths for load balancing with OSPF?
TRUE
224.0.0.10
Ever 2 seconds
4

47. Why is this done?
Port based
To reduce OSPF traffic
All backup routes for destinations.
Each router builds a map of the network and determines the shortest path to every network.

48. The advantages of VLSM
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Maximizing address efficiency - organization - summarization
Susceptible to routing loops

49. An autonomous system could also be referred to as what?
Reduce the link-state database and routing table
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Checks the source address and then permits or denies the entire protocol suite
Domain

50. What is the multicast address for EIGRP?
Convergence
Autonomous System
224.0.0.10
Layers 1 & 2

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