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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 many hops are allowed with RIP?
0
15.....16 hops and the interface is down
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

2. What does a trunk do?

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

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4. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
A backbone area...Also known as Area 0
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Bandwidth & Delay

5. What 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.
Advertised Distance & Feasible distance
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Checks the source and destination address then permits or denies specific protocols

6. Why is EIGRP considered a Hybrid routing protocol?
15.....16 hops and the interface is down
It combines the advantages of Link-State and Distance vector routing protocols.
Dijkstra's Algorithm
1.) Enter the Routing Manually 2.) Use Dymamic Routing

7. What are the two ways routers can learn about the destination information?
4
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Each router builds a map of the network and determines the shortest path to every network.
1.) Enter the Routing Manually 2.) Use Dymamic Routing

8. What is an ABR
2^n-2
Area Border Router
Plaintext and MD5
For line vty 0 4

9. Explain how routing loops occur with RIP?
...
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
No
90

10. Admin distance of OSPF?
RIPv2 and EIGRP
IP
Advertised Distance & Feasible distance
110

11. Wildcard masks filter

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12. What two classless protocols act classful by default?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Loopback
RIPv2 & EIGRP
Multicast

13. How often does EIGRP send hellow packets?
MD5 and you have to enable it if you want to use it.
Every 10 seconds
Private: link local
Every 5 seconds

14. How do you apply the ACL to an interface
Make sure you are in interface mode - then use this command ip access-group 1 out/in
One ACL per protocol - One ACL per direction - Once ACL per interface
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Multicast

15. In Link state terminology - What is a link?
Unicast - Multicast - Anycast
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
A link is an interface on a router
IETF

16. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
Forces protocols to behave as if they were classless
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
16
1Gb/s

17. The time delay for a router to match a network change?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Inter-VLAN routing
Convergence

18. How often are BPDU's sent?
Ever 2 seconds
All backup routes for destinations.
Bandwidth & Delay
Layers 1 & 2

19. Describe features of RIPv1
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
MD5 and you have to enable it if you want to use it.
Routes First/ Tests second
Connects the different areas

20. In frame relay What is Inverse Arp
It combines the advantages of Link-State and Distance vector routing protocols.
Associating the network address with a local DLCI.
Loopback
Packets are processed before they are routed to an outbound interface.

21. An OSPF neighbor relationship can also be called what?
Test Firsts/ Routes Second
Adjacency
Advance Distance Vector
2^n-2

22. What type of algorithm does RIP use?
Distance Vector
RIPv2 & EIGRP
Packet Header
To reduce OSPF traffic

23. Rip is capable of load balancing over as many as?
IP
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
2^n
Six equal cost paths

24. What is ::
Supports both unequal metric load balancing and equal metric balancing.
RIPv2 and EIGRP
110
Unspecified

25. Admin distance of a connected Network?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
The Root bridge is the bridge with the lowest bridge ID
The Diffusing Update Algorithm (DUAL)
0

26. How often are LMI's sent out?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Every 10 Seconds
Link-State
TRUE

27. Example of a Routed Protocol?
RIPv2 & EIGRP
Telnet connectivity - authentication and extended ACLs
The inverse of a subnet mask.
IP

28. Every ACL will need what?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
A combination of Link-state and distance vector
It is the signaling standard that maintains connection and statues between the DCE and DTE
A permit statement

29. What is the Wildcard mask
The update only includes info about the route change
16
Domain
The inverse of a subnet mask.

30. For an adjacency to occur what do the routers have to agree on?
TRUE
110
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
Autonomous System

31. An autonomous system could also be referred to as what?
110
Individual or group IP's
100Mb/s
Domain

32. What distant vector protocols exhibit classless behavior?
Every 10 seconds
Telnet connectivity - authentication and extended ACLs
0
RIPv2 and EIGRP

33. What are non designated routers called?
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
4
Each router builds a map of the network and determines the shortest path to every network.
DROTHER

34. Explain OSPF

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35. What address is FE80:/10
Private: link local
Select the routing protocol - then specify the network.
Reduce the link-state database and routing table
Aka Subnet mask

36. What type of authentication does EIGRP use?
MD5 and you have to enable it if you want to use it.
A trunk
One ACL per protocol - One ACL per direction - Once ACL per interface
Advertised Distance & Feasible distance

37. How is the root bridge determined?
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
Every 30 Seconds
A protocol on how to communicate with other routers

38. Why is it important to have a loopback address when using OSPF?
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
IETF
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Loopback

39. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Test Firsts/ Routes Second
Make sure you are in interface mode - then use this command ip access-group 1 out/in
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

40. How does the SPF determine the shortest path?
The Diffusing Update Algorithm (DUAL)
Determines the cost which is the bandwidth
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
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

41. What are subinterfaces?
Multiple virtual interfaces that are associated with one physical interface
Loopback
2^n
Anycast

42. How do you configure a sub interface?
Anycast
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
RIPv2 and EIGRP

43. Problem with static routes
Connects the different areas
Maximizing address efficiency - organization - summarization
Not scalable - hard to maintain as the network grows
Every 10 Seconds

44. What is the default load balancing for RIP
Checks the source address and then permits or denies the entire protocol suite
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
4
Susceptible to routing loops

45. In regards to troubleshooting OSPF what should you check?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
It combines the advantages of Link-State and Distance vector routing protocols.
Adjacency
Dijkstra's Algorithm

46. What three types of IPv6 address types are there?
Packets are processed before they are routed to an outbound interface.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Unicast - Multicast - Anycast

47. What is the default Bridge priority?
30-50 seconds
32768
Checks the source and destination address then permits or denies specific protocols
1Gb/s

48. What does the back bone router do?
Six equal cost paths
Connects the different areas
Automatically
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

49. For a VLAN to span across multiple switches What is required?
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
100Mb/s
A trunk
Unicast - Multicast - Anycast

50. OSPF routes packets within a single?
Autonomous System
The Root bridge is the bridge with the lowest bridge ID
Test Firsts/ Routes Second
...