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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. When do you use Access-Class
Ever 2 seconds
110
For line vty 0 4
...

2. Every ACL will need what?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Checks the source address and then permits or denies the entire protocol suite
Dijkstra's Algorithm
A permit statement

3. The AS number must what?
By DLCI's
To reduce OSPF traffic
MD5 and you have to enable it if you want to use it.
Match on all routers or it will not work

4. What does EIGRP use to calculate it's metric?
The inverse of a subnet mask.
Forces protocols to behave as if they were classless
Bandwidth & Delay
Inter-VLAN routing

5. What is the Wildcard mask
The Diffusing Update Algorithm (DUAL)
The inverse of a subnet mask.
Packet Header
A backbone area...Also known as Area 0

6. Rip is capable of load balancing over as many as?
By DLCI's
Null
Determines the cost which is the bandwidth
Six equal cost paths

7. How often does a router send link-state advertisements?
Every 30 minutes by default
The Diffusing Update Algorithm (DUAL)
Checks the source address and then permits or denies the entire protocol suite
Telnet connectivity - authentication and extended ACLs

8. What is ::
Bandwidth & Delay
Unspecified
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Susceptible to routing loops

9. What is ::1
Test Firsts/ Routes Second
Loopback
MD5 and you have to enable it if you want to use it.
Dijkstra's Algorithm

10. Describe features of RIPv1
Every 5 seconds
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Packets are processed before they are routed to an outbound interface.
A protocol on how to communicate with other routers

11. What is the dead interval
Every 10 seconds
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
To select the best path to the destination
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

12. Can a Router exchange routing information if they are using different Routing Protocols?
No
IETF
It combines the advantages of Link-State and Distance vector routing protocols.
1Gb/s

13. How is the root bridge determined?
90
Packet Header
The Root bridge is the bridge with the lowest bridge ID
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

14. What three types of IPv6 address types are there?
Unicast - Multicast - Anycast
Unspecified
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Supports both unequal metric load balancing and equal metric balancing.

15. What is passing VLAN traffic to another called?
The Diffusing Update Algorithm (DUAL)
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Advertised Distance & Feasible distance
Inter-VLAN routing

16. What are the two ways routers can learn about the destination information?
MAC based
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Link-State
EIGRP - OSPF - RIP

17. Break down the word Link-State

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18. How is an EUI-64 format interface ID created from a 48-Bit MAC address
Aka Subnet mask
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Autonomous System
Updates all DROTHER Routers when a change occurs

19. Spanning-Tree cost of 100
Connects the different areas
Aka Subnet mask
0
10Mb/s

20. The no auto-summary command does what?
Telnet connectivity - authentication and extended ACLs
0
4 times the hello interval
Forces protocols to behave as if they were classless

21. Spanning-Tree cost of 19
Automatically
To reduce OSPF traffic
100Mb/s
Distance Vector

22. Formula for determining hosts
Multiple virtual interfaces that are associated with one physical interface
Unspecified
Every 10 seconds
2^n-2

23. An OSPF neighbor relationship can also be called what?
Reduce the link-state database and routing table
For line vty 0 4
Inter-VLAN routing
Adjacency

24. Describe an Outbound ACL
2^n
4 times the hello interval
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
1Gb/s

25. What does the DR do?
16
Propagation of partial updates that are sent only to those routers that the changes affect.
0
Updates all DROTHER Routers when a change occurs

26. What type of algorithm does RIP use?
One ACL per protocol - One ACL per direction - Once ACL per interface
Distance Vector
Between areas?
Every 30 minutes by default

27. How often are periodic updates sent out via RIP
View
Telnet connectivity - authentication and extended ACLs
A backbone area...Also known as Area 0
Every 30 Seconds

28. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
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 group of end stations with a common set of requirements - independent of their physical location
Convergence

29. How long is the dead interval
The inverse of a subnet mask.
Select the routing protocol - then specify the network.
4 times the hello interval
90

30. Benefits of OSPF?
Scalable and fast convergence
Adjacency
Connects the different areas
RIPv2 and EIGRP

31. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Every 5 seconds
4
TRUE

32. How do you configure a sub interface?
Distance Vector
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
A backbone area...Also known as Area 0
Scalable and fast convergence

33. OSPF routes packets within a single?
Propagation of partial updates that are sent only to those routers that the changes affect.
The lower MAC address
Autonomous System
Updates all DROTHER Routers when a change occurs

34. What is the default load balancing for RIP
4 times the hello interval
Routes First/ Tests second
4
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

35. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Only with Cisco IOS software release 12.3 (2) T
Private: link local
Ever 2 seconds
TRUE

36. What two things need to be done to enable dynamic routing?
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.
All backup routes for destinations.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Select the routing protocol - then specify the network.

37. Spanning-Tree coast of 4
1Gb/s
TRUE
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Null

38. Classful Protocols summarize
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
TRUE
Automatically
Layers 1 & 2

39. What are non designated routers called?
Anycast
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
4
DROTHER

40. Problem with RIP
Anycast
Susceptible to routing loops
Bandwidth & Delay
...

41. Explain how routing loops occur with RIP?
Connects the different areas
...
Determines the cost which is the bandwidth
The Root bridge is the bridge with the lowest bridge ID

42. Routing protocol is what?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
A protocol on how to communicate with other routers
Inter-VLAN routing
Match on all routers or it will not work

43. In frame relay What is Inverse Arp
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.
Associating the network address with a local DLCI.
Different Autonomous Systems
The Diffusing Update Algorithm (DUAL)

44. Nonbackbone - internal routers are aware of what topology
Cisco - ANSI - Q.933A
Only topology within their respective area.
Convergence
It is never useful to send information about a route back in the direction from which the original info came.

45. Formula for determining Subnets
10Mb/s
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
2^n

46. What is the default for equal cost paths for load balancing with OSPF?
To reduce OSPF traffic
4
Supports both unequal metric load balancing and equal metric balancing.
100Mb/s

47. Problem with static routes
Only topology within their respective area.
Not scalable - hard to maintain as the network grows
Forces protocols to behave as if they were classless
Every 5 seconds

48. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Carry's traffic for multiple VLANS
Null
16
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

49. What is a VLAN
Each router builds a map of the network and determines the shortest path to every network.
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.
Reduce the link-state database and routing table
A group of end stations with a common set of requirements - independent of their physical location

50. For a VLAN to span across multiple switches What is required?
IP
A trunk
RIPv2 & EIGRP
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL