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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. VTP Client Mode does what?

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2. Spanning-Tree coast of 4
15.....16 hops and the interface is down
Every 30 minutes by default
A trunk
1Gb/s

3. What is an Autonomous System?
No
Checks the source address and then permits or denies the entire protocol suite
...
Every 30 minutes by default

4. How is the root bridge determined?
Layers 1 & 2
A group of end stations with a common set of requirements - independent of their physical location
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
The Root bridge is the bridge with the lowest bridge ID

5. With OSPF - there must always be a area......
0
224.0.0.5
Forces protocols to behave as if they were classless
Loopback

6. An OSPF neighbor relationship can also be called what?
Adjacency
A layer 3 switch or router
90
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. With ACL's where does the router extract information
Packet Header
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
90
MAC based

8. VTP Server Mode does what?

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9. What is the default for equal cost paths for load balancing with OSPF?
Plaintext and MD5
2^n
RIPv2 & EIGRP
4

10. Why is this done?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
30-50 seconds
Ever 2 seconds
To reduce OSPF traffic

11. What three types of IPv6 address types are there?
Unicast - Multicast - Anycast
The update only includes info about the route change
All backup routes for destinations.
120

12. The AS number must what?
Carry's traffic for multiple VLANS
Match on all routers or it will not work
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Only with Cisco IOS software release 12.3 (2) T

13. By default OSPF uses what type of authentication?
Link-State
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Null
1

14. In frame relay What is Inverse Arp
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
Associating the network address with a local DLCI.
Disable auto summarization
Private: link local

15. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Loopback
The inverse of a subnet mask.
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.
Private: link local

16. How often are periodic updates sent out via RIP
A link is an interface on a router
Every 30 Seconds
Aka Subnet mask
Updates all DROTHER Routers when a change occurs

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

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18. Dynamic VLAN is what?
MAC based
Updates all DROTHER Routers when a change occurs
TRUE
Area Border Router

19. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
Only topology within their respective area.
To reduce OSPF traffic
Individual or group IP's

20. What are subinterfaces?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Determines the cost which is the bandwidth
Multiple virtual interfaces that are associated with one physical interface
30-50 seconds

21. What algorithm does EIGRP use?
Telnet connectivity - authentication and extended ACLs
Routes First/ Tests second
Between areas?
The Diffusing Update Algorithm (DUAL)

22. What is an ABR
A combination of Link-state and distance vector
Propagation of partial updates that are sent only to those routers that the changes affect.
Loopback
Area Border Router

23. For a VLAN to span across multiple switches What is required?
Cisco - ANSI - Q.933A
Carry's traffic for multiple VLANS
A trunk
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

24. How does inbound ACL work?
A combination of Link-state and distance vector
Between areas?
Test Firsts/ Routes Second
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

25. Describe a Inbound ACL
Supports both unequal metric load balancing and equal metric balancing.
Link-State
Packets are processed before they are routed to an outbound interface.
1

26. Static VLAN is what?
Port based
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Every 30 Seconds
2^n

27. Admin distance of EIGRP?
30-50 seconds
...
It combines the advantages of Link-State and Distance vector routing protocols.
90

28. Normal time for STP convergence
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Ever 2 seconds
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
30-50 seconds

29. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
EIGRP - OSPF - RIP
TRUE
The Root bridge is the bridge with the lowest bridge ID
Distance Vector

30. What type of algorithm does RIP use?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
90
Distance Vector

31. Nonbackbone - internal routers are aware of what topology
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Only topology within their respective area.
Dijkstra's Algorithm
Because a loopback interface is always active and cannot be in a down state like a real interface can.

32. How are Frame Relay Circuits identified?

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33. What are two OSPF authentication methods?
MAC based
Unspecified
All backup routes for destinations.
Plaintext and MD5

34. What are the two ways routers can learn about the destination information?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Loopback
Propagation of partial updates that are sent only to those routers that the changes affect.
1.) Enter the Routing Manually 2.) Use Dymamic Routing

35. Formula for determining hosts
Layers 1 & 2
2^n-2
Multicast
...

36. What does EIGRP use to calculate it's metric?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Bandwidth & Delay
Supports both unequal metric load balancing and equal metric balancing.
Scalable and fast convergence

37. What type of algorithm does EIGRP use?
Updates all DROTHER Routers when a change occurs
Inter-VLAN routing
Every 5 seconds
Advance Distance Vector

38. How is an EUI-64 format interface ID created from a 48-Bit MAC address
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
IP
Advertised Distance & Feasible distance
Adjacency

39. Example of a Routing Protocol?
2^n-2
Layers 1 & 2
Area Border Router
EIGRP - OSPF - RIP

40. Every ACL will need what?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
A permit statement
Designated Router (DR) and a Back-up designated Router (BDR)
Automatically

41. How does an Extended ACL work?
Every 5 seconds
Forces protocols to behave as if they were classless
Checks the source and destination address then permits or denies specific protocols
IP

42. Admin distance of RIPv2
120
4
Every 10 seconds
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

43. What is a VLAN
Because a loopback interface is always active and cannot be in a down state like a real interface can.
A group of end stations with a common set of requirements - independent of their physical location
Adjacency
Aka Subnet mask

44. The time delay for a router to match a network change?
Loopback
Convergence
4
Every 30 minutes by default

45. What is the multicast address for EIGRP?
Every 10 seconds
No
Propagation of partial updates that are sent only to those routers that the changes affect.
224.0.0.10

46. The advantages of VLSM
EIGRP - OSPF - RIP
Maximizing address efficiency - organization - summarization
Checks the source and destination address then permits or denies specific protocols
Select the routing protocol - then specify the network.

47. With OSPF - what must be defined?
Layers 1 & 2
Every 10 Seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.
A backbone area...Also known as Area 0

48. Exterior Gateway Protocols are designed for use between
Maximizing address efficiency - organization - summarization
Different Autonomous Systems
Select the routing protocol - then specify the network.
Disable auto summarization

49. Describe features of RIPv1
Loopback
The update only includes info about the route change
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

50. What is the dead interval
Cisco - ANSI - Q.933A
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
To reduce OSPF traffic