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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. Dynamic ACL's are dependent on what?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Telnet connectivity - authentication and extended ACLs
Link-State
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

2. What are two OSPF authentication methods?
Aka Subnet mask
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Plaintext and MD5
No

3. What is OSPF multicast address?
224.0.0.5
Unspecified
Convergence
Plaintext and MD5

4. In frame relay What is Inverse Arp
32768
TRUE
Associating the network address with a local DLCI.
Between areas?

5. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
0
TRUE
224.0.0.10
For line vty 0 4

6. With OSPF - what must be defined?
A backbone area...Also known as Area 0
The inverse of a subnet mask.
2^n-2
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.

7. What is prefix length?
110
Aka Subnet mask
IETF
It is never useful to send information about a route back in the direction from which the original info came.

8. How often are periodic updates sent out via RIP
16
Supports both unequal metric load balancing and equal metric balancing.
Every 30 Seconds
20 seconds: 10 missed BPDU's

9. What are non designated routers called?
DROTHER
View
Connects the different areas
A protocol on how to communicate with other routers

10. What two classless protocols act classful by default?
32768
Different Autonomous Systems
RIPv2 & EIGRP
Reduce the link-state database and routing table

11. What is the default for equal cost paths for load balancing with OSPF?
4
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

12. For an adjacency to occur what do the routers have to agree on?
Connects the different areas
The Diffusing Update Algorithm (DUAL)
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Automatically

13. Problem with RIP
MD5 and you have to enable it if you want to use it.
Convergence
Susceptible to routing loops
RIPv2 and EIGRP

14. A router running EIGRP will store what?
IP
RIPv2 & EIGRP
All backup routes for destinations.
Loopback

15. Formula for determining hosts
Associating the network address with a local DLCI.
20 seconds: 10 missed BPDU's
2^n-2
Packets are processed before they are routed to an outbound interface.

16. Explain how routing loops occur with RIP?
4 times the hello interval
...
The Diffusing Update Algorithm (DUAL)
Cisco - ANSI - Q.933A

17. What address is FE80:/10
Private: link local
TRUE
Not scalable - hard to maintain as the network grows
...

18. Admin distance of OSPF?
To select the best path to the destination
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
110
IETF

19. What is the dead interval
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Null
All backup routes for destinations.
1

20. With OSPF - there must always be a area......
EIGRP - OSPF - RIP
A protocol on how to communicate with other routers
0
Between areas?

21. What does the back bone router do?
Autonomous System
Connects the different areas
Six equal cost paths
20 seconds: 10 missed BPDU's

22. Admin distance of a connected Network?
Cisco - ANSI - Q.933A
IETF
A link is an interface on a router
0

23. What does bounded refer to?
Maximizing address efficiency - organization - summarization
4 times the hello interval
Propagation of partial updates that are sent only to those routers that the changes affect.
A group of end stations with a common set of requirements - independent of their physical location

24. What does EIGRP use to calculate it's metric?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Bandwidth & Delay
4
Automatically

25. What is Frame Relay?
2^n-2
Distance Vector
Convergence
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

26. For a VLAN to span across multiple switches What is required?
Different Autonomous Systems
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
A trunk
Supports both unequal metric load balancing and equal metric balancing.

27. How often are LMI's sent out?
Every 10 Seconds
A permit statement
Designated Router (DR) and a Back-up designated Router (BDR)
4

28. VTP Transparent Mode does what?

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29. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Unspecified
A layer 3 switch or router

30. An autonomous system could also be referred to as what?
Layers 1 & 2
Data Link Connection Identifier
For line vty 0 4
Domain

31. Max_age time for BPDU's

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32. What do area's do?
To select the best path to the destination
Dijkstra's Algorithm
Reduce the link-state database and routing table
RIPv2 and EIGRP

33. Spanning-Tree coast of 4
Only topology within their respective area.
1Gb/s
Maximizing address efficiency - organization - summarization
It combines the advantages of Link-State and Distance vector routing protocols.

34. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
RIPv2 & EIGRP
15.....16 hops and the interface is down
Telnet connectivity - authentication and extended ACLs

35. How many hops are allowed with RIP?
15.....16 hops and the interface is down
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Susceptible to routing loops

36. What are two statements that are true of IPv6 address representation?
Forces protocols to behave as if they were classless
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.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

37. The time delay for a router to match a network change?
Convergence
Scalable and fast convergence
1.) Enter the Routing Manually 2.) Use Dymamic Routing
It is the signaling standard that maintains connection and statues between the DCE and DTE

38. What type of algorithm does EIGRP use?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Dijkstra's Algorithm
Advance Distance Vector
The update only includes info about the route change

39. What is the multicast address for EIGRP?
224.0.0.10
Link-State
RIPv2 & EIGRP
10Mb/s

40. What type of algorithm does RIP use?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Cisco - ANSI - Q.933A
224.0.0.5
Distance Vector

41. By default OSPF uses what type of authentication?
Susceptible to routing loops
Dijkstra's Algorithm
Null
Multicast

42. How do you apply the ACL to an interface
Different Autonomous Systems
Every 30 Seconds
Make sure you are in interface mode - then use this command ip access-group 1 out/in
The update only includes info about the route change

43. Rip is capable of load balancing over as many as?
0
4 times the hello interval
Six equal cost paths
Loopback

44. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
Telnet connectivity - authentication and extended ACLs
Connects the different areas
RIPv2 & EIGRP

45. Describe features of RIPv2
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
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

46. What is passing VLAN traffic to another called?
Anycast
Inter-VLAN routing
Port based
Telnet connectivity - authentication and extended ACLs

47. Admin distance of EIGRP?
Multicast
Telnet connectivity - authentication and extended ACLs
90
Susceptible to routing loops

48. VTP Server Mode does what?

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49. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
2^n-2
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.

50. In Link state terminology - What is a link?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Between areas?
A link is an interface on a router
Each router builds a map of the network and determines the shortest path to every network.

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