Test your basic knowledge |

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. Describe an Outbound ACL
1
Packet Header
Incoming packets are routed to the outbound interface - and then they are processed through the outbound ACL
Every 30 Seconds

2. Nonbackbone - internal routers are aware of what topology
Individual or group IP's
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Only topology within their respective area.
Not scalable - hard to maintain as the network grows

3. Purpose of a Routing Protocol?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Null
100Mb/s

4. Break down the word Link-State

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5. What Layer does Frame Relay operate at?
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Port based
Layers 1 & 2

6. Problem with static routes
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
Not scalable - hard to maintain as the network grows
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
224.0.0.5

7. Routers running distances vector routing protocol send periodic updates even if there are no changes in the network. True or False?
TRUE
Automatically
Packet Header
Individual or group IP's

8. In Link state terminology - What is a link?
Checks the source and destination address then permits or denies specific protocols
EIGRP - OSPF - RIP
A link is an interface on a router
Maximizing address efficiency - organization - summarization

9. What is one to nearest
Anycast
All backup routes for destinations.
Aka Subnet mask
Layers 1 & 2

10. What is one to many?
Multicast
Checks the source and destination address then permits or denies specific protocols
Private: link local
The update only includes info about the route change

11. How is an EUI-64 format interface ID created from a 48-Bit MAC address
4
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
For line vty 0 4
Designated Router (DR) and a Back-up designated Router (BDR)

12. Formula for determining hosts
Checks the source address and then permits or denies the entire protocol suite
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
2^n-2
30-50 seconds

13. What is Frame Relay?
Match on all routers or it will not work
Make sure you are in interface mode - then use this command ip access-group 1 out/in
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Packets are processed before they are routed to an outbound interface.

14. What is the default Bridge priority?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
4
32768
Scalable and fast convergence

15. Spanning-Tree cost of 19
100Mb/s
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Port based
Designated Router (DR) and a Back-up designated Router (BDR)

16. What three types of IPv6 address types are there?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
Unicast - Multicast - Anycast
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.
32768

17. What is the dead interval
Different Autonomous Systems
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
15.....16 hops and the interface is down
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.

18. Dynamic VLAN is what?
MAC based
Data Link Connection Identifier
1Gb/s
4

19. How does an outbound ACL work?
The update only includes info about the route change
Every 10 Seconds
Automatically
Routes First/ Tests second

20. How often does EIGRP send hellow packets?
Disable auto summarization
Every 5 seconds
Bandwidth & Delay
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

21. Max_age time for BPDU's

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22. 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.
DROTHER
Carry's traffic for multiple VLANS
Cisco - ANSI - Q.933A

23. Spanning-Tree cost of 100
10Mb/s
Packet Header
Six equal cost paths
Aka Subnet mask

24. For an adjacency to occur what do the routers have to agree on?
Updates all DROTHER Routers when a change occurs
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Propagation of partial updates that are sent only to those routers that the changes affect.
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

25. By default OSPF uses what type of authentication?
Layers 1 & 2
Null
Multiple virtual interfaces that are associated with one physical interface
Checks the source and destination address then permits or denies specific protocols

26. How does Link-State work?
Between areas?
Each router builds a map of the network and determines the shortest path to every network.
A single interface may be assigned multiple IPv6 addresses - and every IPv6 interface contains at least one loopback address.
It is never useful to send information about a route back in the direction from which the original info came.

27. Rip is capable of load balancing over as many as?
Six equal cost paths
Telnet connectivity - authentication and extended ACLs
Carry's traffic for multiple VLANS
30-50 seconds

28. What address is FE80:/10
Private: link local
Every 10 seconds
RIPv2 & EIGRP
4

29. Formula for determining Subnets
224.0.0.5
2^n
To reduce OSPF traffic
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.

30. Normal time for STP convergence
30-50 seconds
EIGRP - OSPF - RIP
The inverse of a subnet mask.
Dijkstra's Algorithm

31. What is an Autonomous System?
A trunk
...
120
For line vty 0 4

32. What is prefix length?
A combination of Link-state and distance vector
Only topology within their respective area.
Unicast - Multicast - Anycast
Aka Subnet mask

33. What is the multicast address for EIGRP?
Aka Subnet mask
Automatically
MD5 and you have to enable it if you want to use it.
224.0.0.10

34. Can a Router exchange routing information if they are using different Routing Protocols?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
No
For line vty 0 4

35. What two things need to be done to enable dynamic routing?
It combines the advantages of Link-State and Distance vector routing protocols.
Select the routing protocol - then specify the network.
MAC based
Only with Cisco IOS software release 12.3 (2) T

36. Who designed OSPF?
100Mb/s
2^n-2
IETF
A protocol on how to communicate with other routers

37. Admin distance of a Static Route?
Checks the source and destination address then permits or denies specific protocols
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available
Private: link local
1

38. What type of algorithm does RIP use?
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
The inverse of a subnet mask.
Distance Vector

39. What type of algorithm does EIGRP use?
Area Border Router
Advance Distance Vector
DROTHER
Domain

40. Summarization of network information usually occurs where?
Link is the router interface and State is the description of an interface and it's relationship to neighboring routers
Between areas?
Make sure you are in interface mode - then use this command ip access-group 1 out/in
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.

41. Admin distance of a connected Network?
TRUE
A layer 3 switch or router
0
4

42. How often are BPDU's sent?
Every 10 Seconds
Convergence
Ever 2 seconds
Individual or group IP's

43. What is ::
Every 30 Seconds
Creates - Modifies - and deletes local VLAN's only - Forwards advertisements - Does not synchronize VLAN configs
Unspecified
To reduce OSPF traffic

44. What are two OSPF authentication methods?
Plaintext and MD5
Advance Distance Vector
Forces protocols to behave as if they were classless
Susceptible to routing loops

45. A router running EIGRP will store what?
Port based
15.....16 hops and the interface is down
0
All backup routes for destinations.

46. Every ACL will need what?
Different Autonomous Systems
The Diffusing Update Algorithm (DUAL)
A layer 3 switch or router
A permit statement

47. What do you need to do if there are discontigous networks with EIGRP?
Cisco - ANSI - Q.933A
RIPv2 & EIGRP
Reduce the link-state database and routing table
Disable auto summarization

48. How often are periodic updates sent out via RIP
Data Link Connection Identifier
120
Every 30 Seconds
2^n-2

49. What is the purpose of LMI
It is the signaling standard that maintains connection and statues between the DCE and DTE
Between areas?
1.) Enter the Routing Manually 2.) Use Dymamic Routing
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.

50. Problem with RIP
Susceptible to routing loops
A backbone area...Also known as Area 0
Associating the network address with a local DLCI.
Supports both unequal metric load balancing and equal metric balancing.