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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. Nonbackbone - internal routers are aware of what topology
Only topology within their respective area.
Match on all routers or it will not work
Reduce the link-state database and routing table
The lower MAC address

2. Advance Distance Vector or Hybrid uses what?
Advertised Distance & Feasible distance
Domain
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
A combination of Link-state and distance vector

3. What two parameters does EIGRP use to determine the best route?
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Advertised Distance & Feasible distance
RIPv2 and EIGRP
IP

4. What is passing VLAN traffic to another called?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Autonomous System
Six equal cost paths
Inter-VLAN routing

5. Example of a Routing Protocol?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
EIGRP - OSPF - RIP
TRUE
Checks the source and destination address then permits or denies specific protocols

6. How long is the dead interval
Null
4 times the hello interval
The inverse of a subnet mask.
The update only includes info about the route change

7. Problem with static routes
0
Private: link local
Not scalable - hard to maintain as the network grows
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication

8. What does a trunk do?

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9. Admin distance of a Static Route?
2^n-2
1
EIGRP - OSPF - RIP
For line vty 0 4

10. VTP Client Mode does what?

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11. What algorithm does EIGRP use?
The Diffusing Update Algorithm (DUAL)
...
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
Distance Vector

12. Formula for determining Subnets
Different Autonomous Systems
2^n
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Null

13. What does the DR do?
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
A protocol on how to communicate with other routers
224.0.0.5
Updates all DROTHER Routers when a change occurs

14. What is the dead interval
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Multicast
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

15. What does the back bone router do?
4 times the hello interval
Connects the different areas
Six equal cost paths
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.

16. Exterior Gateway Protocols are designed for use between
Ever 2 seconds
Every 5 seconds
Different Autonomous Systems
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

17. In regards to troubleshooting OSPF what should you check?
Carry's traffic for multiple VLANS
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Layers 1 & 2
Unspecified

18. What is the default load balancing for RIP
It is the signaling standard that maintains connection and statues between the DCE and DTE
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
View
4

19. By default - EIGRP will perform automatic summarization on classful boundaries. True or False
Plaintext and MD5
Maximizing address efficiency - organization - summarization
TRUE
Inter-VLAN routing

20. A router running EIGRP will store what?
Dijkstra's Algorithm
A backbone area...Also known as Area 0
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
All backup routes for destinations.

21. What do you need to do if there are discontigous networks with EIGRP?
Disable auto summarization
4 times the hello interval
DROTHER
Supports both unequal metric load balancing and equal metric balancing.

22. What are subinterfaces?
Propagation of partial updates that are sent only to those routers that the changes affect.
Not scalable - hard to maintain as the network grows
Multiple virtual interfaces that are associated with one physical interface
MAC based

23. What three types of IPv6 address types are there?
The lower MAC address
Unicast - Multicast - Anycast
Carry's traffic for multiple VLANS
Convergence

24. What does bounded refer to?
4
Propagation of partial updates that are sent only to those routers that the changes affect.
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

25. What is the maximum number of paths EIGRP can have for the same destination in it's routing table?
16
A trunk
90
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

26. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
Designated Router (DR) and a Back-up designated Router (BDR)
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Supports both unequal metric load balancing and equal metric balancing.
View

27. How often are LMI's sent out?
Telnet connectivity - authentication and extended ACLs
By DLCI's
Every 10 Seconds
Loopback

28. What distant vector protocols exhibit classless behavior?
Autonomous System
All backup routes for destinations.
The inverse of a subnet mask.
RIPv2 and EIGRP

29. Normal time for STP convergence
Different Autonomous Systems
4
30-50 seconds
Routes First/ Tests second

30. What are non designated routers called?
DROTHER
Supports both unequal metric load balancing and equal metric balancing.
It is the signaling standard that maintains connection and statues between the DCE and DTE
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

31. What do area's do?
Reduce the link-state database and routing table
All backup routes for destinations.
16
120

32. What are two statements that are true of IPv6 address representation?
Scalable and fast convergence
MAC based
2^n
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

33. What is the default for equal cost paths for load balancing with OSPF?
Select the routing protocol - then specify the network.
Checks the source and destination address then permits or denies specific protocols
4
Susceptible to routing loops

34. An autonomous system could also be referred to as what?
Cisco - ANSI - Q.933A
Domain
Every 30 minutes by default
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.

35. Summarization of network information usually occurs where?
Distance Vector
All backup routes for destinations.
90
Between areas?

36. Describe an Outbound ACL
Routes First/ Tests second
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.
A link is an interface on a router
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL

37. How does an outbound ACL work?
The Root bridge is the bridge with the lowest bridge ID
Adjacency
To select the best path to the destination
Routes First/ Tests second

38. Break down the word Link-State

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39. What is the purpose of LMI
1
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
A combination of Link-state and distance vector
It is the signaling standard that maintains connection and statues between the DCE and DTE

40. Classful Protocols summarize
30-50 seconds
4 times the hello interval
Automatically
Checks the source and destination address then permits or denies specific protocols

41. What is the multicast address for EIGRP?
224.0.0.10
16
A permit statement
90

42. By default OSPF uses what type of authentication?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Port based
Null
Packets are processed before they are routed to an outbound interface.

43. With OSPF - there must always be a area......
0
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
A trunk
It combines the advantages of Link-State and Distance vector routing protocols.

44. Admin distance of OSPF?
110
Not scalable - hard to maintain as the network grows
Connects the different areas
120

45. Explain how routing loops occur with RIP?
To select the best path to the destination
...
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Every 30 minutes by default

46. VTP Server Mode does what?

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47. What does this mean? R 192.168.1.0/24 [120/2] via 10.1.1.2
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.
1Gb/s
One ACL per protocol - One ACL per direction - Once ACL per interface
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.

48. Formula for determining hosts
2^n-2
View
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

49. How many hops are allowed with RIP?
15.....16 hops and the interface is down
A link is an interface on a router
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
A layer 3 switch or router

50. The no auto-summary command does what?
Forces protocols to behave as if they were classless
Packet Header
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL