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Certification Question Papers


CCNA Study Questions

 

Some CCNA Certification Exam questions

1. The five steps of Encapsulation:

1) User information is converted to data.
2) Data is converted to segments.
3) Segments are converted to packets or datagrams.
4) Packets or datagrams are converted to frames.
5) Frames are converted to bits.

2. What kind of services are provided by the Presentation layer ?

JPEG, TIFF, PICT, EBCDIC to ASCII, MIDI, MPEG, QuickTime

3. What kind of services are provided by the Session layer ?

NFS, SQL, RPC, X Windows, ASP, DNA SCP

4. How to enable a Banner on a Cisco Router ?

Router(Config#) banner motd #

5. What are the three ways to display IPX interface e0 ?

sh ipx int e0
sh ipx interface e0
sh ipx interface ethernet0

6. What's the default subnet mask for Class A, B and C IP adresses ?
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0

7. Which IP-class provides the least number of Hosts?

Class C

8. How to define access-list commands ?

wrong: Router(config-if)# access-list 1 permit 172.16.20.1 0.0.0.0
right: Router(config) # access-list 1 permit 172.16.20.1 0.0.0.0
The access list will be defined at global level, not at the interface level. It?s a small but important detail. The access group command will be defined at interface level:
Router(config) # int e0
Router(config-if) # access-group 1 out

9. What are the access-list ranges of IP (standard and extended) ?

1-99 IP standard access list
100-199 IP extended access list
know also:
600-699 Appletalk access list
800-899 IPX standard access list
900-999 IPX extended access list
1000-1099 IPX SAP access list

10. What happens to a packet which receives the end of an access list ?

There is an implicit deny any at the end of an access list. So if the packet is not allowed, it will be dropped.

11. Which command is used to view the access-list on serial0 interface ?

show access-lists s0

12. How many access-lists are possible on an interface per protocol ?

There can be only one access list for in and one for out on each interface per protocol.

13. What is the FrameRelay configuration command for the second subinterface ?

interface s0.2 point-to-point
interface s0.2 multipoint
point-to-point is a direct link between two routers. multipoint is a router in the center as a star of virtual circuits.

14. How to change the Enable Secret password to CCNA ?

Router(config)# enable secret CCNA

15. How to change the Enable password to CCNP ?

Router(config)# enable password CCNP
How to change the Virtual Terminal password to CCIE ?
Router(config)# line vty 0 4
Router(config-line)# login
Router(config-line)# password CCIE

16. How to change the Auxiliary password to Cisco ?

Router(config)# line aux 0
Router(config-line)# login
Router(config-line)# password Cisco
How to change the Console password to Cisco ?
Router(config)# line con 0
Router(config-line)# login
Router(config-line)# password Cisco

17. How to change the Console password to Cisco ?

Router(config)# line con 0
Router(config-line)# login
Router(config-line)# password Cisco

18. What is the command to show you both source and destination DLCI's in one command ?

I'm thinking it is show frame-relay route but I'm not sure.
What is the command to show both source and destination addresses in ipx ?
debug ipx routing activity (not sure)

19. How are the ISDN protocols defined ?

I stands for concepts, terminology and services
E stands for existing telephone network
Q stands for switching and signaling

20. What are the correct encapsulation type of frame-relay ?

Cisco (default), IETF

21. How to monitor Frame-relay activity on a Cisco router ?

show interface s0
show frame-relay map

22. What command copies a backup of the ISO image?

copy running-config tftp albert

23 .Session layer standards? What are some? (ASCII, NFS, SQL, MIDI, JPEG, etc...)

24. How do you change the admin password on the console? line con o

25. What is the host config file type?

26. How do you load the sys image "beta" from a tftp server?

2c.000.0c56.de34 <-- What protocol, Node, Network id, etc?

27. What are the characteristics of ISDN? (two identical questions with different answer choices)

28. How do you set the frame relay interface s1 bandwidth to 56k?

29. Transport layer functionality?

router#cl (Get ambiguous command) (how do you get the choices from here?)

30. How do you move the cursor to the beginning of the line? CTRL + A

31. Session Layer functionality?

32. Presentation Layer Functionality?

33. How do you display an ip address assigned to specific host names?

34. How do you turn on the motd on the router? banner motd #

35. What is the wildcard mask (subnet mask) for this situation?

36. How to display the ipx address on ethernet 0?

37. What protocol is used to convert IP addresses to MAC addresses? ARP

38. What is flow control?

Technique for ensuring that a transmitting entity, such as a modem, does not overwhelm a receiving entity with data. When the buffers on receiving device are full, a message is sent to the sending device to suspend the transmission until the data in the buffers has been processed.

39. How do you display the ipx routing updates in or out between routers?
(I didn't really understand this question)

40. What password types control access to a router?
(pw to access line, password to access EXEC mode, etc...)

41. What are the default encapsulation and LMI type options?

42. What is the ICMP protocol for? Management protocol and messaging service provider for IP. Network Layer internet protocol that reports errors and provides other information relvant to IP packets processing.

43. ISDN protocol standards? (Key in on the categories based on what letter the protocol starts with -- Q, I, E, etc...)

44. What two commands can be used to verify the address config.

Match the IPX encapsulation with the IOS encapsulation (i.e. Ethernet_II -> arpa, Ethernet_802.3 -> SAP, etc...)

45. How do you get help with a command syntax? leave a space? type the question mark Reliable transport layer connections support? (acknowledgments, route selection, checkpoints, etc...?) End-to-end communication
Responsible for hiding the communications from the higher layers. TCP / UDP

46. How are routing lops prevented?

47. How do you enable IPX on a router?

48. Which technology is appropriate for serial communications?
(CPE, Demarc, DTE, CO, etc...)

49. What are the technology implications of 1/2 duplex Ethernet cards?

50. How do you log onto EXEC mode?
You have to log in to the router before an Exec command can be entered

51. How do you enter commands on a router? (terminal, a file on a tftp server, etc?)

52. What is a MAC? Error Detection. Responsible for framing and media access

53. How do we deny telnet traffic from <ip address> on S0?

54. What does a manual shutdown look like when you run "show s1 status"?

55. With an ip address and access list, how do you display what interface a list has set?

56. What specifies a second sub-interface on S0?

57. How do you define an interface on a Cisco 7000 or 7500 with a VIP card installed?

58. What are the components of the route command?

59. Which class allows for the fewest hosts?

60. What does the MAC layer of the Datalink layer do?

61. What is actually on the test?

According to Cisco you need to be able to configure and manage "simple" networks. What defines "simple" networks (according to Cisco): IP, IGRP, IPX, Serial, AppleTalk, Frame Relay, IP RIP, VLANs, IPX RIP, Ethernet, Access Lists In addition to the recommended study topics you should be very fluent with several other (not all listed) topics. A few examples of these would be: The OSI model, and Cisco Discovery Protocol. A lot of the questions deal specifically with the Cisco IOS, such as installing, logging in, navigating, backing up, and debugging.

62. What is the command to show you both source and destination dlci's in one command.

I'm thinking it is show frame-relay route but I'm not sure.

63. What is the command to show both source and destination addresses in ipx.

I'm thinking it is "debug ipx activity".

64. What is half duplex?

I know it is you can tx & rx in both directions but only one at a time, but the way they word it is confusing. They say it is transmit connected to receive circuit or vice-versa or they say it is like a one way bridge. The closest answer I could find in the multiple choice it the one way bridge?

65. What are the three ways you could display ipx E0 interfaces:

commands are: SHOW IPX INTERFACE ETHERNET 0, SHOW IPX INTERFACE E 0,& SHOW >IPX INT E0.

66. How to define a range of access list: For example, 172.16.10.0 - 172.16.40.0. what is the wild mask you will use.

Study Complex subnetting thoroughly. Meaning if you cross 8-bit boundary. For example: take an ip address 172.16.0.0. It is a Class-B network. You use 11-bit for subnetting. You will be asked to choose the correct range of host addresses. Todd has shown the chart which will help you a lot.

67. What's the default subnet mask for Class A, B and C.

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