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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 does the SPF determine the shortest path?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Determines the cost which is the bandwidth
4
Area Border Router

2. What is Frame Relay?
Data Link Connection Identifier
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
MAC based
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.

3. What is an ABR
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.
Area Border Router
120
Supports both unequal metric load balancing and equal metric balancing.

4. What is the default load balancing for RIP
120
4
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Each router builds a map of the network and determines the shortest path to every network.

5. Admin distance of EIGRP?
No
By DLCI's
90
Every 5 seconds

6. What is the default for equal cost paths for load balancing with OSPF?
Match on all routers or it will not work
A protocol on how to communicate with other routers
To select the best path to the destination
4

7. Problem with static routes
Not scalable - hard to maintain as the network grows
Inter-VLAN routing
For line vty 0 4
TRUE

8. What does bounded refer to?
Autonomous System
Propagation of partial updates that are sent only to those routers that the changes affect.
The Root bridge is the bridge with the lowest bridge ID
Domain

9. 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.
Every 30 minutes by default
It combines the advantages of Link-State and Distance vector routing protocols.
Routes First/ Tests second

10. An OSPF neighbor relationship can also be called what?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Adjacency
To select the best path to the destination
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

11. Summarization of network information usually occurs where?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
4 times the hello interval
Between areas?

12. What is an Autonomous System?
Layers 1 & 2
...
Forces protocols to behave as if they were classless
Link-State

13. Static VLAN is what?
Port based
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
...

14. VTP Client Mode does what?

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15. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
Determines the cost which is the bandwidth
Plaintext and MD5
Test Firsts/ Routes Second

16. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
A layer 3 switch or router
The Diffusing Update Algorithm (DUAL)
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

17. How does an outbound ACL work?
Routes First/ Tests second
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Match on all routers or it will not work
IP

18. Spanning-Tree coast of 4
Match on all routers or it will not work
224.0.0.5
Plaintext and MD5
1Gb/s

19. Formula for determining hosts
2^n-2
The inverse of a subnet mask.
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Not scalable - hard to maintain as the network grows

20. Describe features of RIPv2
Null
Multicast
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
EIGRP - OSPF - RIP

21. Admin distance of OSPF?
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
0
A trunk
110

22. What distant vector protocols exhibit classless behavior?
RIPv2 and EIGRP
2^n-2
Each router builds a map of the network and determines the shortest path to every network.
Routes First/ Tests second

23. How do you apply the ACL to an interface
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Different Autonomous Systems
Select the routing protocol - then specify the network.

24. How does a Standard ACL work?
120
Reduce the link-state database and routing table
Checks the source address and then permits or denies the entire protocol suite
Cisco - ANSI - Q.933A

25. How often are LMI's sent out?
Reduce the link-state database and routing table
Updates all DROTHER Routers when a change occurs
1
Every 10 Seconds

26. When do you use Access-Class
A link is an interface on a router
All backup routes for destinations.
It is never useful to send information about a route back in the direction from which the original info came.
For line vty 0 4

27. What is passing VLAN traffic to another called?
Multicast
No
Inter-VLAN routing
0

28. How is the root bridge determined?
10Mb/s
Every 10 Seconds
Maximizing address efficiency - organization - summarization
The Root bridge is the bridge with the lowest bridge ID

29. Purpose of a Routing Protocol?
DROTHER
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Cisco - ANSI - Q.933A
Loopback

30. Dynamic ACL's are dependent on what?
110
...
Data Link Connection Identifier
Telnet connectivity - authentication and extended ACLs

31. A router running EIGRP will store what?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Anycast
To reduce OSPF traffic
All backup routes for destinations.

32. What does the DR do?
Updates all DROTHER Routers when a change occurs
RIPv2 & EIGRP
A permit statement
Layers 1 & 2

33. How often does a router send link-state advertisements?
To reduce OSPF traffic
2^n
Every 30 minutes by default
Make sure you are in interface mode - then use this command ip access-group 1 out/in

34. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
Make sure you are in interface mode - then use this command ip access-group 1 out/in
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs

35. What is the purpose of LMI
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Layers 1 & 2
It is the signaling standard that maintains connection and statues between the DCE and DTE
Convergence

36. OSPF routes packets within a single?
Different Autonomous Systems
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
32768
Autonomous System

37. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Dijkstra's Algorithm
TRUE
RIPv2 and EIGRP
Layers 1 & 2

38. What two things need to be done to enable dynamic routing?
Between areas?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Select the routing protocol - then specify the network.
Carry's traffic for multiple VLANS

39. What are subinterfaces?
Link-State
Multiple virtual interfaces that are associated with one physical interface
16
2^n-2

40. Describe an Outbound ACL
Port based
0
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Carry's traffic for multiple VLANS

41. How often does EIGRP send hellow packets?
Updates all DROTHER Routers when a change occurs
Routes First/ Tests second
Every 5 seconds
...

42. How does an Extended ACL work?
30-50 seconds
...
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Checks the source and destination address then permits or denies specific protocols

43. Normal time for STP convergence
30-50 seconds
Area Border Router
Updates all DROTHER Routers when a change occurs
No

44. With OSPF - what must be defined?
Inter-VLAN routing
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Reduce the link-state database and routing table
A backbone area...Also known as Area 0

45. Can a Router exchange routing information if they are using different Routing Protocols?
32768
100Mb/s
No
MAC based

46. What type of algorithm does EIGRP use?
For line vty 0 4
Test Firsts/ Routes Second
Advance Distance Vector
Null

47. What does EIGRP use to calculate it's metric?
Updates all DROTHER Routers when a change occurs
Different Autonomous Systems
Bandwidth & Delay
Autonomous System

48. Wildcard masks filter

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49. VTP Server Mode does what?

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50. What are non designated routers called?
Area Border Router
DROTHER
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Different Autonomous Systems