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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?
1Gb/s
Updates all DROTHER Routers when a change occurs
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Determines the cost which is the bandwidth

2. What two classless protocols act classful by default?
Packet Header
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
RIPv2 & EIGRP

3. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
A link is an interface on a router
MD5 and you have to enable it if you want to use it.
1

4. What are two statements that are true of IPv6 address representation?
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
Data Link Connection Identifier
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
100Mb/s

5. Break down the word Link-State

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6. Admin distance of a Static Route?
1
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Select the routing protocol - then specify the network.
224.0.0.10

7. With OSPF - there must always be a area......
IP
Designated Router (DR) and a Back-up designated Router (BDR)
View
0

8. What is an Autonomous System?
Forces protocols to behave as if they were classless
...
Different Autonomous Systems
30-50 seconds

9. What does EIGRP use to calculate it's metric?
The lower MAC address
Bandwidth & Delay
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Every 10 seconds

10. Describe an Outbound ACL
It is the signaling standard that maintains connection and statues between the DCE and DTE
Not scalable - hard to maintain as the network grows
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.

11. How does Link-State work?
30-50 seconds
Each router builds a map of the network and determines the shortest path to every network.
Domain
Loopback

12. Exterior Gateway Protocols are designed for use between
120
Different Autonomous Systems
4
2^n-2

13. By default OSPF uses what type of authentication?
Forces protocols to behave as if they were classless
Null
Ever 2 seconds
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration

14. Max_age time for BPDU's

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15. In Link state terminology - What is a link?
Bandwidth & Delay
1Gb/s
Updates all DROTHER Routers when a change occurs
A link is an interface on a router

16. What is ::
Private: link local
Determines the cost which is the bandwidth
Unspecified
IETF

17. Advance Distance Vector or Hybrid uses what?
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 combination of Link-state and distance vector
Place the extended ACL's as close to the source as possible and the standard ACL's as close to the destination as possible.
224.0.0.5

18. Admin distance of OSPF?
Unicast - Multicast - Anycast
2^n
IETF
110

19. What two parameters does EIGRP use to determine the best route?
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Advertised Distance & Feasible distance
Null
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers

20. What does the DR do?
Updates all DROTHER Routers when a change occurs
Plaintext and MD5
Match on all routers or it will not work
Advance Distance Vector

21. Rip is capable of load balancing over as many as?
It is the signaling standard that maintains connection and statues between the DCE and DTE
Six equal cost paths
...
30-50 seconds

22. What is OSPF multicast address?
Every 30 minutes by default
Dijkstra's Algorithm
The Root bridge is the bridge with the lowest bridge ID
224.0.0.5

23. What is one to nearest
Disable auto summarization
Adjacency
Anycast
Test Firsts/ Routes Second

24. What is one to many?
32768
Multicast
10Mb/s
The lower MAC address

25. What type of algorithm does OSPF & IS-IS use?
A layer 3 switch or router
Link-State
For line vty 0 4
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0

26. What type of authentication does EIGRP use?
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
Every 5 seconds
MD5 and you have to enable it if you want to use it.

27. What is the Wildcard mask
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
The inverse of a subnet mask.
10Mb/s
Connects the different areas

28. Dynamic VLAN is what?
Multicast
MAC based
Inter-VLAN routing
A group of end stations with a common set of requirements - independent of their physical location

29. Classful Protocols summarize
No
The Root bridge is the bridge with the lowest bridge ID
Automatically
A protocol on how to communicate with other routers

30. Admin distance of RIPv2
100Mb/s
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
Select the routing protocol - then specify the network.
120

31. Summarization of network information usually occurs where?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Between areas?
Updates all DROTHER Routers when a change occurs
30-50 seconds

32. What is ::1
Match on all routers or it will not work
Loopback
For line vty 0 4
Convergence

33. What is the default for equal cost paths for load balancing with OSPF?
32768
4
Reduce the link-state database and routing table
Checks the source address and then permits or denies the entire protocol suite

34. What are the three LMI standards
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
100Mb/s
Cisco - ANSI - Q.933A
Automatically

35. Purpose of a Routing Protocol?
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
The Root bridge is the bridge with the lowest bridge ID
IETF
Aka Subnet mask

36. The AS number must what?
Determines the cost which is the bandwidth
Anycast
4
Match on all routers or it will not work

37. A router running EIGRP will store what?
Bandwidth & Delay
All backup routes for destinations.
Layers 1 & 2
One ACL per protocol - One ACL per direction - Once ACL per interface

38. What is a VLAN
IP
MD5 and you have to enable it if you want to use it.
4 times the hello interval
A group of end stations with a common set of requirements - independent of their physical location

39. Admin distance of a connected Network?
Unspecified
...
Disable auto summarization
0

40. In Link state terminology - What is a link?

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41. What does partial refer to?
20 seconds: 10 missed BPDU's
It is never useful to send information about a route back in the direction from which the original info came.
Associating the network address with a local DLCI.
The update only includes info about the route change

42. Dynamic ACL's are dependent on what?
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 group of end stations with a common set of requirements - independent of their physical location
Test Firsts/ Routes Second
Telnet connectivity - authentication and extended ACLs

43. Spanning-Tree cost of 19
View
Maximizing address efficiency - organization - summarization
100Mb/s
EIGRP - OSPF - RIP

44. What do you need to do if there are discontigous networks with EIGRP?
2^n-2
...
Checks the source and destination address then permits or denies specific protocols
Disable auto summarization

45. Spanning-Tree cost of 100
10Mb/s
The Root bridge is the bridge with the lowest bridge ID
View
Unspecified

46. How do you configure a sub interface?
A combination of Link-state and distance vector
Is a classless link-state protocol - creates a neighbor relationship by exchanging hello packets - propagates LSA's rather than routing table updates.
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
Designated Router (DR) and a Back-up designated Router (BDR)

47. Why is this done?
IETF
Unicast - Multicast - Anycast
Anycast
To reduce OSPF traffic

48. VTP Server Mode does what?

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49. What distant vector protocols exhibit classless behavior?
4
By DLCI's
EIGRP - OSPF - RIP
RIPv2 and EIGRP

50. An OSPF neighbor relationship can also be called what?
To select the best path to the destination
224.0.0.10
Adjacency
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL