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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. Formula for determining hosts
Advertised Distance & Feasible distance
A link is an interface on a router
It combines the advantages of Link-State and Distance vector routing protocols.
2^n-2

2. In Link state terminology - What is a link?
A link is an interface on a router
IP
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Every 10 Seconds

3. What does partial refer to?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Automatically
The update only includes info about the route change
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.

4. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
EIGRP - OSPF - RIP
A backbone area...Also known as Area 0
Checks the source address and then permits or denies the entire protocol suite

5. What type of authentication does EIGRP use?
Select the routing protocol - then specify the network.
MD5 and you have to enable it if you want to use it.
Six equal cost paths
Convergence

6. What is an Autonomous System?
...
Port based
1
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. Benefits of OSPF?
MAC based
Connects the different areas
100Mb/s
Scalable and fast convergence

8. How often are OSPF hello packets sent out?
...
EIGRP - OSPF - RIP
Every 10 seconds
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

9. The AS number must what?
A link is an interface on a router
It is the signaling standard that maintains connection and statues between the DCE and DTE
Match on all routers or it will not work
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

10. What does DLCI stand for?
Data Link Connection Identifier
Determines the cost which is the bandwidth
Area Border Router
Link-State

11. Admin distance of a Static Route?
1
View
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Individual or group IP's

12. What two things need to be done to enable dynamic routing?
Autonomous System
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.
EIGRP - OSPF - RIP
Select the routing protocol - then specify the network.

13. OSPF routes packets within a single?
A trunk
Autonomous System
Domain
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

14. What is a VLAN
32768
A group of end stations with a common set of requirements - independent of their physical location
To select the best path to the destination
The Diffusing Update Algorithm (DUAL)

15. What are the three LMI standards
IETF
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Cisco - ANSI - Q.933A
Every 30 minutes by default

16. 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
Disable auto summarization
For line vty 0 4
Every 30 minutes by default

17. What is ::1
Loopback
Checks the source address and then permits or denies the entire protocol suite
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
RIPv2 & EIGRP

18. What type of algorithm does EIGRP use?
Data Link Connection Identifier
Link-State
Advance Distance Vector
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

19. What are non designated routers called?
Adjacency
DROTHER
Six equal cost paths
1.) Enter the Routing Manually 2.) Use Dymamic Routing

20. Spanning-Tree cost of 19
Designated Router (DR) and a Back-up designated Router (BDR)
Six equal cost paths
Maximizing address efficiency - organization - summarization
100Mb/s

21. Static VLAN is what?
MAC based
Six equal cost paths
Advertised Distance & Feasible distance
Port based

22. VTP Server Mode does what?

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23. Why is it important to have a loopback address when using OSPF?
Ever 2 seconds
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Match on all routers or it will not work

24. What is prefix length?
110
Aka Subnet mask
2^n-2
Multiple virtual interfaces that are associated with one physical interface

25. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Different Autonomous Systems
MAC based
16
0

26. Explain how routing loops occur with RIP?
16
Inter-VLAN routing
...
1.) Enter the Routing Manually 2.) Use Dymamic Routing

27. What is passing VLAN traffic to another called?
224.0.0.5
Inter-VLAN routing
No
One ACL per protocol - One ACL per direction - Once ACL per interface

28. How does Link-State work?
20 seconds: 10 missed BPDU's
Each router builds a map of the network and determines the shortest path to every network.
TRUE
Advertised Distance & Feasible distance

29. An OSPF neighbor relationship can also be called what?
A permit statement
1
Every 30 Seconds
Adjacency

30. Can a Router exchange routing information if they are using different Routing Protocols?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
No
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Adjacency

31. What algorithm does EIGRP use?
The Diffusing Update Algorithm (DUAL)
Advertised Distance & Feasible distance
Convergence
All backup routes for destinations.

32. How many hops are allowed with RIP?
15.....16 hops and the interface is down
RIPv2 and EIGRP
Every 30 minutes by default
30-50 seconds

33. Why is this done?
To reduce OSPF traffic
Autonomous System
Multiple virtual interfaces that are associated with one physical interface
Adjacency

34. What is Frame Relay?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Carry's traffic for multiple VLANS
Associating the network address with a local DLCI.
TRUE

35. Routing protocol is what?
Ever 2 seconds
IP
A protocol on how to communicate with other routers
0

36. The advantages of VLSM
Forces protocols to behave as if they were classless
Telnet connectivity - authentication and extended ACLs
MD5 and you have to enable it if you want to use it.
Maximizing address efficiency - organization - summarization

37. How long is the dead interval
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.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Individual or group IP's
4 times the hello interval

38. What is the dead interval
Disable auto summarization
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Convergence
Packet Header

39. How often are BPDU's sent?
Packet Header
Ever 2 seconds
30-50 seconds
Updates all DROTHER Routers when a change occurs

40. Describe features of RIPv2
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
The inverse of a subnet mask.
4
Adjacency

41. How does an outbound ACL work?
Individual or group IP's
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Routes First/ Tests second
Determines the cost which is the bandwidth

42. How does inbound ACL work?
Not scalable - hard to maintain as the network grows
The update only includes info about the route change
Inter-VLAN routing
Test Firsts/ Routes Second

43. What do area's do?
Reduce the link-state database and routing table
30-50 seconds
The lower MAC address
A backbone area...Also known as Area 0

44. The no auto-summary command does what?
Forces protocols to behave as if they were classless
Every 30 minutes by default
Reduce the link-state database and routing table
Area Border Router

45. OSPF will elect a what?
Every 30 minutes by default
Select the routing protocol - then specify the network.
Designated Router (DR) and a Back-up designated Router (BDR)
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

46. What is the Wildcard mask
4 times the hello interval
30-50 seconds
EIGRP - OSPF - RIP
The inverse of a subnet mask.

47. What three types of IPv6 address types are there?
Different Autonomous Systems
Ever 2 seconds
Unicast - Multicast - Anycast
Checks the source and destination address then permits or denies specific protocols

48. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Only with Cisco IOS software release 12.3 (2) T
It is the signaling standard that maintains connection and statues between the DCE and DTE
The lower MAC address

49. Example of a Routing Protocol?
Six equal cost paths
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
EIGRP - OSPF - RIP
Inter-VLAN routing

50. Admin distance of EIGRP?
Updates all DROTHER Routers when a change occurs
The Diffusing Update Algorithm (DUAL)
90
Dijkstra's Algorithm