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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 is the root bridge determined?
Packets are processed before they are routed to an outbound interface.
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
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.
The Root bridge is the bridge with the lowest bridge ID

2. In Link state terminology - What is a link?
Autonomous System
A link is an interface on a router
Different Autonomous Systems
Aka Subnet mask

3. How does inbound ACL work?
Test Firsts/ Routes Second
A combination of Link-state and distance vector
Adjacency
A backbone area...Also known as Area 0

4. Describe features of RIPv1
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Individual or group IP's
Plaintext and MD5

5. What does partial refer to?
Advance Distance Vector
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
The update only includes info about the route change
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

6. Can a Router exchange routing information if they are using different Routing Protocols?
No
1
Between areas?
2^n

7. Spanning-Tree cost of 100
A protocol on how to communicate with other routers
10Mb/s
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Adjacency

8. How are Frame Relay Circuits identified?

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9. What are two OSPF authentication methods?
IP
The inverse of a subnet mask.
Plaintext and MD5
Inter-VLAN routing

10. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
Adjacency
1.) Enter the Routing Manually 2.) Use Dymamic Routing
TRUE
224.0.0.5

11. What does the back bone router do?
Connects the different areas
Forces protocols to behave as if they were classless
Cisco - ANSI - Q.933A
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

12. With OSPF - what must be defined?
Associating the network address with a local DLCI.
A backbone area...Also known as Area 0
Convergence
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

13. What is OSPF multicast address?
Disable auto summarization
224.0.0.5
Only topology within their respective area.
Adjacency

14. Who designed OSPF?
Automatically
...
IETF
Test Firsts/ Routes Second

15. By default OSPF uses what type of authentication?
To select the best path to the destination
Null
4 times the hello interval
MAC based

16. How often are BPDU's sent?
It combines the advantages of Link-State and Distance vector routing protocols.
Checks the source address and then permits or denies the entire protocol suite
Every 10 Seconds
Ever 2 seconds

17. How do you configure a sub interface?
Scalable and fast convergence
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
Forces protocols to behave as if they were classless
TRUE

18. How does an outbound ACL work?
Routes First/ Tests second
Dijkstra's Algorithm
For line vty 0 4
Each router builds a map of the network and determines the shortest path to every network.

19. How does an Extended ACL work?
Checks the source and destination address then permits or denies specific protocols
Private: link local
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.

20. Classful Protocols summarize
Every 30 Seconds
Test Firsts/ Routes Second
Automatically
IP

21. What two classless protocols act classful by default?
Autonomous System
RIPv2 & EIGRP
4 times the hello interval
View

22. Admin distance of a connected Network?
Checks the source address and then permits or denies the entire protocol suite
Disable auto summarization
0
View

23. What two parameters does EIGRP use to determine the best route?
Advertised Distance & Feasible distance
Multiple virtual interfaces that are associated with one physical interface
MAC based
By DLCI's

24. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
It is the signaling standard that maintains connection and statues between the DCE and DTE
16
0
Between areas?

25. What is an ABR
...
Area Border Router
Supports both unequal metric load balancing and equal metric balancing.
It is never useful to send information about a route back in the direction from which the original info came.

26. OSPF will elect a what?
Designated Router (DR) and a Back-up designated Router (BDR)
Anycast
Every 10 Seconds
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

27. Explain OSPF

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28. How many hops are allowed with RIP?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
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
MAC based

29. What is the default for equal cost paths for load balancing with OSPF?
4
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
RIPv2 & EIGRP
Reduce the link-state database and routing table

30. Describe a Inbound ACL
It combines the advantages of Link-State and Distance vector routing protocols.
Packets are processed before they are routed to an outbound interface.
EIGRP - OSPF - RIP
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

31. Rip is capable of load balancing over as many as?
Dijkstra's Algorithm
Every 10 seconds
Six equal cost paths
Reduce the link-state database and routing table

32. What is the purpose of LMI
To select the best path to the destination
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
It is the signaling standard that maintains connection and statues between the DCE and DTE
The inverse of a subnet mask.

33. What is prefix length?
Aka Subnet mask
Plaintext and MD5
The lower MAC address
A combination of Link-state and distance vector

34. What is the dead interval
Data Link Connection Identifier
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
EIGRP - OSPF - RIP
It is never useful to send information about a route back in the direction from which the original info came.

35. An OSPF neighbor relationship can also be called what?
Adjacency
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Anycast
For line vty 0 4

36. Break down the word Link-State

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37. What is the multicast address for EIGRP?
224.0.0.10
Carry's traffic for multiple VLANS
1
Advertised Distance & Feasible distance

38. Admin distance of RIPv2
32768
A protocol on how to communicate with other routers
Because a loopback interface is always active and cannot be in a down state like a real interface can.
120

39. What is one to many?
...
Multicast
4
Reduce the link-state database and routing table

40. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
View
Every 5 seconds
Convergence

41. Formula for determining Subnets
224.0.0.5
Every 5 seconds
2^n
Match on all routers or it will not work

42. Wildcard masks filter

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43. What does bounded refer to?
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.
1
Every 30 Seconds
Propagation of partial updates that are sent only to those routers that the changes affect.

44. What is a VLAN
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A group of end stations with a common set of requirements - independent of their physical location
224.0.0.10

45. Formula for determining hosts
Advertised Distance & Feasible distance
2^n-2
The update only includes info about the route change
Every 30 Seconds

46. How often are LMI's sent out?
Every 10 Seconds
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Adjacency

47. Purpose of a Routing Protocol?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
By DLCI's
Autonomous System
Every 5 seconds

48. Describe an Outbound ACL
1
A backbone area...Also known as Area 0
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Checks the source address and then permits or denies the entire protocol suite

49. Summarization of network information usually occurs where?
It is never useful to send information about a route back in the direction from which the original info came.
Updates all DROTHER Routers when a change occurs
Between areas?
Area Border Router

50. What is the spilt horizon rule?
Link-State
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Unspecified
It is never useful to send information about a route back in the direction from which the original info came.