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. What is one to many?
Multicast
View
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
1

2. Dynamic ACL's are dependent on what?
Every 30 minutes by default
Telnet connectivity - authentication and extended ACLs
Area Border Router
View

3. What are two OSPF authentication methods?
To reduce OSPF traffic
Plaintext and MD5
32768
To select the best path to the destination

4. How do you configure a sub interface?
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.
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
Loopback
Data Link Connection Identifier

5. What address is FE80:/10
Connects the different areas
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Private: link local
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication

6. What is OSPF multicast address?
110
Data Link Connection Identifier
120
224.0.0.5

7. Describe features of RIPv1
...
4 times the hello interval
Only with Cisco IOS software release 12.3 (2) T
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication

8. Spanning-Tree cost of 19
A permit statement
Associating the network address with a local DLCI.
100Mb/s
TRUE

9. Admin distance of RIPv2
120
A combination of Link-state and distance vector
0
Discovery of Remote Networks - Maintaining Up to date information - Choosing the best path available

10. What does EIGRP use to calculate it's metric?
Forces protocols to behave as if they were classless
TRUE
10Mb/s
Bandwidth & Delay

11. What is an ABR
Area Border Router
Only topology within their respective area.
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
Match on all routers or it will not work

12. Every ACL will need what?
Checks the source and destination address then permits or denies specific protocols
Distance Vector
A permit statement
A backbone area...Also known as Area 0

13. What is prefix length?
Automatically
Only with Cisco IOS software release 12.3 (2) T
If int status is UP/UP..Check to make sure OSPF is enabled on the interface
Aka Subnet mask

14. What is the default Bridge priority?
100Mb/s
32768
TRUE
224.0.0.10

15. What are non designated routers called?
Unicast - Multicast - Anycast
4
DROTHER
Convergence

16. Admin distance of EIGRP?
No
16
0
90

17. Problem with static routes
Data Link Connection Identifier
Unicast - Multicast - Anycast
Not scalable - hard to maintain as the network grows
To reduce OSPF traffic

18. What is ::1
Loopback
Every 30 Seconds
Automatically
Area-ID - hello/dead intervals - authentication - and stub area flag and same IP subnet.

19. With OSPF - there must always be a area......
TRUE
0
It is a means for statistically multiplexing many logical data conversations also known as virtual circuits on a single physical transmission link.
Dijkstra's Algorithm

20. What type of algorithm does EIGRP use?
It combines the advantages of Link-State and Distance vector routing protocols.
Advance Distance Vector
4
Connects the different areas

21. A router running EIGRP will store what?
100Mb/s
RIPv2 & EIGRP
By insereting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
All backup routes for destinations.

22. What type of authentication does EIGRP use?
It is the signaling standard that maintains connection and statues between the DCE and DTE
TRUE
Loopback
MD5 and you have to enable it if you want to use it.

23. How does a Standard ACL work?
The Diffusing Update Algorithm (DUAL)
Associating the network address with a local DLCI.
Checks the source address and then permits or denies the entire protocol suite
1Gb/s

24. VTP Server Mode does what?

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25. Wildcard masks filter

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26. Why is EIGRP considered a Hybrid routing protocol?
Telnet connectivity - authentication and extended ACLs
0
Link-State
It combines the advantages of Link-State and Distance vector routing protocols.

27. What is the purpose of LMI
TRUE
20 seconds: 10 missed BPDU's
It is the signaling standard that maintains connection and statues between the DCE and DTE
MAC based

28. With OSPF - each router builds its SPF tree using the same link-state information - but each will have a separate ________ of the topology
View
DROTHER
1
Area Border Router

29. What is the spilt horizon rule?
IETF
Advance Distance Vector
It is never useful to send information about a route back in the direction from which the original info came.
To reduce OSPF traffic

30. What does the back bone router do?
Only with Cisco IOS software release 12.3 (2) T
Connects the different areas
Null
4 times the hello interval

31. What does the DR do?
Because a loopback interface is always active and cannot be in a down state like a real interface can.
Updates all DROTHER Routers when a change occurs
Between areas?
For line vty 0 4

32. How often are LMI's sent out?
Unspecified
Every 10 Seconds
Six equal cost paths
One ACL per protocol - One ACL per direction - Once ACL per interface

33. In bridge root selection - if the bridge prioritys are the same - what determines root selection?
The lower MAC address
Only topology within their respective area.
1Gb/s
Supports both unequal metric load balancing and equal metric balancing.

34. Exterior Gateway Protocols are designed for use between
Different Autonomous Systems
Packet Header
Only with Cisco IOS software release 12.3 (2) T
Susceptible to routing loops

35. Benefits of OSPF?
View
Forces protocols to behave as if they were classless
Automatically
Scalable and fast convergence

36. What is the multicast address for EIGRP?
224.0.0.10
A layer 3 switch or router
TRUE
DROTHER

37. What does a trunk do?

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38. Can a Router exchange routing information if they are using different Routing Protocols?
No
Classless - VLSM capable - Subnet mask sent in routing update - Multicast addressing - Supports route summarization - and authentication
A link is an interface on a router
Bandwidth & Delay

39. Admin distance of a Static Route?
Rouer OSPF 100 - then network xx.xx.xx.xx. area 0
1
...
Packets are processed before they are routed to an outbound interface.

40. How does inbound ACL work?
Match on all routers or it will not work
Cisco - ANSI - Q.933A
Test Firsts/ Routes Second
It is the signaling standard that maintains connection and statues between the DCE and DTE

41. Example of a Routed Protocol?
Classful - No VLSM - Broadcast addressing - No route summarization - or Authentication
Maximizing address efficiency - organization - summarization
100Mb/s
IP

42. What are the major components of OSPF troubleshooting?
1
Connects the different areas
OSPF Neighbor adjacencies - OSPF routing table - and OSPF authentication
Link-State

43. What does DLCI stand for?
It combines the advantages of Link-State and Distance vector routing protocols.
Creates - Modifies - and deletes VLAN's - Sends and forwards advertisements - Synchronizes VLAN configuration
Unicast - Multicast - Anycast
Data Link Connection Identifier

44. In regards to troubleshooting OSPF what should you check?
...
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
Cannot create - modify or delete VLAN's - sends and forwards advertisements - synchronizes VLAn configurations.
If int status is UP/UP..Check to make sure OSPF is enabled on the interface

45. The no auto-summary command does what?
Forces protocols to behave as if they were classless
1.) Enter the Routing Manually 2.) Use Dymamic Routing
A group of end stations with a common set of requirements - independent of their physical location
The Root bridge is the bridge with the lowest bridge ID

46. VTP Transparent Mode does what?

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47. What do you need to do if there are discontigous networks with EIGRP?
A permit statement
Disable auto summarization
4
By DLCI's

48. Who designed OSPF?
The Root bridge is the bridge with the lowest bridge ID
IETF
Private: link local
32768

49. How does Link-State work?
Loopback
Is the time in seconds that a router waits to hear from a neighbor before declaring the router out of service.
It combines the advantages of Link-State and Distance vector routing protocols.
Each router builds a map of the network and determines the shortest path to every network.

50. 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.
...
For line vty 0 4
The lower MAC address