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CCNA

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. How long is the dead interval
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Null
4 times the hello interval
Bandwidth & Delay

2. What are subinterfaces?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Multiple virtual interfaces that are associated with one physical interface
No
IP

3. How often are BPDU's sent?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
4
Anycast
Ever 2 seconds

4. What address is FE80:/10
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Private: link local
Ever 2 seconds
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

5. What is OSPF multicast address?
A permit statement
Layers 1 & 2
224.0.0.5
Six equal cost paths

6. Spanning-Tree cost of 100
30-50 seconds
Propagation of partial updates that are sent only to those routers that the changes affect.
100Mb/s
10Mb/s

7. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
20 seconds: 10 missed BPDU's
Aka Subnet mask
Anycast

8. Describe features of RIPv1
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
20 seconds: 10 missed BPDU's
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
120

9. What is one to many?
Scalable and fast convergence
Telnet connectivity - authentication and extended ACLs
Multicast
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.

10. Nonbackbone - internal routers are aware of what topology
Bandwidth & Delay
Only topology within their respective area.
224.0.0.10
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

11. The no auto-summary command does what?
Forces protocols to behave as if they were classless
110
By DLCI's
...

12. An OSPF neighbor relationship can also be called what?
By DLCI's
Private: link local
Adjacency
...

13. Static VLAN is what?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
For line vty 0 4
Unspecified
Port based

14. VTP Client Mode does what?

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15. What are non designated routers called?
100Mb/s
DROTHER
Not scalable - hard to maintain as the network grows
Private: link local

16. How does EIGRP work with regards to Load Balancing
Updates all DROTHER Routers when a change occurs
A protocol on how to communicate with other routers
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.
Supports both unequal metric load balancing and equal metric balancing.

17. What is an ABR
Area Border Router
EIGRP - OSPF - RIP
It is the signaling standard that maintains connection and statues between the DCE and DTE
4

18. How does inbound ACL work?
Between areas?
30-50 seconds
Anycast
Test Firsts/ Routes Second

19. What is a VLAN
Routes First/ Tests second
A protocol on how to communicate with other routers
A group of end stations with a common set of requirements - independent of their physical location
MAC based

20. Admin distance of RIPv2
A combination of Link-state and distance vector
TRUE
The Root bridge is the bridge with the lowest bridge ID
120

21. Describe a Inbound ACL
Inter-VLAN routing
Checks the source address and then permits or denies the entire protocol suite
Anycast
Packets are processed before they are routed to an outbound interface.

22. How often are LMI's sent out?
Every 10 Seconds
15.....16 hops and the interface is down
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
Routes First/ Tests second

23. Classful Protocols summarize
120
Automatically
20 seconds: 10 missed BPDU's
Multicast

24. Rip is capable of load balancing over as many as?
Only topology within their respective area.
Multiple virtual interfaces that are associated with one physical interface
Six equal cost paths
1Gb/s

25. What is an Autonomous System?
...
DROTHER
A combination of Link-state and distance vector
A trunk

26. What does bounded refer to?
Propagation of partial updates that are sent only to those routers that the changes affect.
15.....16 hops and the interface is down
TRUE
224.0.0.10

27. With OSPF - there must always be a area......
Multicast
Advertised Distance & Feasible distance
0
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

28. 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.
Six equal cost paths
A protocol on how to communicate with other routers
IETF

29. In regards to ACL's What are the three protocols?
Designated Router (DR) and a Back-up designated Router (BDR)
Multiple virtual interfaces that are associated with one physical interface
One ACL per protocol - One ACL per direction - Once ACL per interface
Every 5 seconds

30. Explain how routing loops occur with RIP?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
...
Cisco - ANSI - Q.933A
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

31. What type of algorithm does RIP use?
Every 5 seconds
Distance Vector
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

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

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33. In Link state terminology - What is a link?
To reduce OSPF traffic
2^n-2
A trunk
A link is an interface on a router

34. How do you configure OSPF
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.
Maximizing address efficiency - organization - summarization
Disable auto summarization

35. How is the root bridge determined?
2^n-2
Scalable and fast convergence
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
The Root bridge is the bridge with the lowest bridge ID

36. What does the DR do?
The update only includes info about the route change
Updates all DROTHER Routers when a change occurs
Aka Subnet mask
Cisco - ANSI - Q.933A

37. Wildcard masks filter

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38. What are the two ways routers can learn about the destination information?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Routes First/ Tests second
IP
By DLCI's

39. Why is it important to have a loopback address when using OSPF?
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.
Multiple virtual interfaces that are associated with one physical interface
Because a loopback interface is always active and cannot be in a down state like a real interface can.
4

40. How do you apply the ACL to an interface
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Ever 2 seconds
...
It is the signaling standard that maintains connection and statues between the DCE and DTE

41. What type of algorithm does EIGRP use?
120
Automatically
To select the best path to the destination
Advance Distance Vector

42. What does EIGRP use to calculate it's metric?
224.0.0.10
Bandwidth & Delay
It is never useful to send information about a route back in the direction from which the original info came.
Data Link Connection Identifier

43. How many hops are allowed with RIP?
Distance Vector
15.....16 hops and the interface is down
30-50 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.

44. For an adjacency to occur what do the routers have to agree on?
90
A layer 3 switch or router
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Packets are processed before they are routed to an outbound interface.

45. What are two statements that are true of IPv6 address representation?
To reduce OSPF traffic
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
10Mb/s
MD5 and you have to enable it if you want to use it.

46. What two parameters does EIGRP use to determine the best route?
Propagation of partial updates that are sent only to those routers that the changes affect.
Advertised Distance & Feasible distance
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
Determines the cost which is the bandwidth

47. What Layer does Frame Relay operate at?
Layers 1 & 2
For line vty 0 4
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Unspecified

48. What does a trunk do?

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49. How often are OSPF hello packets sent out?
A group of end stations with a common set of requirements - independent of their physical location
Autonomous System
Disable auto summarization
Every 10 seconds

50. Admin distance of EIGRP?
90
No
A group of end stations with a common set of requirements - independent of their physical location
30-50 seconds