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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. What are two OSPF authentication methods?
Reduce the link-state database and routing table
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
By DLCI's
Plaintext and MD5

2. What is the default load balancing for RIP
It is never useful to send information about a route back in the direction from which the original info came.
Dijkstra's Algorithm
Every 30 Seconds
4

3. How does an outbound ACL work?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Updates all DROTHER Routers when a change occurs
Routes First/ Tests second
A backbone area...Also known as Area 0

4. What address is FE80:/10
Every 10 seconds
A trunk
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Private: link local

5. How do you apply the ACL to an interface
Updates all DROTHER Routers when a change occurs
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
A backbone area...Also known as Area 0

6. In frame relay What is Inverse Arp
Associating the network address with a local DLCI.
Every 10 seconds
Susceptible to routing loops
Only topology within their respective area.

7. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
By DLCI's
Telnet connectivity - authentication and extended ACLs
Each router builds a map of the network and determines the shortest path to every network.

8. Classful Protocols summarize
Only topology within their respective area.
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Each router builds a map of the network and determines the shortest path to every network.
Automatically

9. Admin distance of a connected Network?
Between areas?
0
Distance Vector
Not scalable - hard to maintain as the network grows

10. What do area's do?
Packet Header
It combines the advantages of Link-State and Distance vector routing protocols.
4
Reduce the link-state database and routing table

11. Admin distance of OSPF?
A permit statement
Anycast
1.) Enter the Routing Manually 2.) Use Dymamic Routing
110

12. Advance Distance Vector or Hybrid uses what?
A combination of Link-state and distance vector
30-50 seconds
4 times the hello interval
2^n-2

13. Explain how routing loops occur with RIP?
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.
...
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Plaintext and MD5

14. OSPF will elect a what?
Reduce the link-state database and routing table
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Designated Router (DR) and a Back-up designated Router (BDR)
For line vty 0 4

15. Spanning-Tree cost of 19
A backbone area...Also known as Area 0
100Mb/s
Private: link local
2^n-2

16. With OSPF - what must be defined?
A backbone area...Also known as Area 0
Distance Vector
2^n-2
0

17. What is passing VLAN traffic to another called?
One ACL per protocol - One ACL per direction - Once ACL per interface
Every 30 minutes by default
Inter-VLAN routing
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

18. Formula for determining hosts
2^n-2
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Routes First/ Tests second
A backbone area...Also known as Area 0

19. Can a Router exchange routing information if they are using different Routing Protocols?
Associating the network address with a local DLCI.
The update only includes info about the route change
No
Packets are processed before they are routed to an outbound interface.

20. How does inbound ACL work?
Test Firsts/ Routes Second
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.
Null
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

21. In Link state terminology - What is a link?
Not scalable - hard to maintain as the network grows
Match on all routers or it will not work
A link is an interface on a router
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

22. With OSPF - there must always be a area......
Different Autonomous Systems
4
0
Determines the cost which is the bandwidth

23. What two classless protocols act classful by default?
RIPv2 & EIGRP
1Gb/s
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
A protocol on how to communicate with other routers

24. Rip is capable of load balancing over as many as?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Area Border Router
Six equal cost paths

25. What is needed to pass traffic from one VLAN to another?
A layer 3 switch or router
100Mb/s
Private: link local
IP

26. How does an Extended ACL work?
Inter-VLAN routing
Unicast - Multicast - Anycast
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Checks the source and destination address then permits or denies specific protocols

27. Describe an Outbound ACL
1Gb/s
View
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
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

28. How often does a router send link-state advertisements?
A group of end stations with a common set of requirements - independent of their physical location
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Every 30 minutes by default
224.0.0.10

29. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
32768
Telnet connectivity - authentication and extended ACLs
Six equal cost paths
16

30. Break down the word Link-State

31. How many hops are allowed with RIP?
15.....16 hops and the interface is down
0
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

32. Routers are used for what?
To select the best path to the destination
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
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

33. What type of algorithm does OSPF & IS-IS use?
Telnet connectivity - authentication and extended ACLs
It is the signaling standard that maintains connection and statues between the DCE and DTE
Every 5 seconds
Link-State

34. What two things need to be done to enable dynamic routing?
Advance Distance Vector
...
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Select the routing protocol - then specify the network.

35. How is the root bridge determined?
16
Different Autonomous Systems
Scalable and fast convergence
The Root bridge is the bridge with the lowest bridge ID

36. What three types of IPv6 address types are there?
Unicast - Multicast - Anycast
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
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.
Domain

37. What is the multicast address for EIGRP?
To reduce OSPF traffic
The update only includes info about the route change
Test Firsts/ Routes Second
224.0.0.10

38. What does DLCI stand for?
Data Link Connection Identifier
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 permit statement
Forces protocols to behave as if they were classless

39. What is the Wildcard mask
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Not scalable - hard to maintain as the network grows
The inverse of a subnet mask.

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

41. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
Every 5 seconds
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.
Advertised Distance & Feasible distance
Unicast - Multicast - Anycast

42. What algorithm does EIGRP use?
View
Adjacency
The Diffusing Update Algorithm (DUAL)
TRUE

43. What is the purpose of LMI
It is the signaling standard that maintains connection and statues between the DCE and DTE
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
90
Null

44. What is one to nearest
Because a loopback interface is always active and cannot be in a down state like a real interface can.
16
MD5 and you have to enable it if you want to use it.
Anycast

45. What Layer does Frame Relay operate at?
0
100Mb/s
4
Layers 1 & 2

46. What is the default Bridge priority?
Determines the cost which is the bandwidth
2^n
32768
EIGRP - OSPF - RIP

47. Describe features of RIPv2
For line vty 0 4
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Every 10 Seconds
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

48. Benefits of OSPF?
Scalable and fast convergence
1
Routes First/ Tests second
Forces protocols to behave as if they were classless

49. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
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
...
TRUE
Convergence

50. An autonomous system could also be referred to as what?
Domain
Not scalable - hard to maintain as the network grows
224.0.0.10
...