Notes

CHAPTER 3
1. What application layer protocol is commonly used to support for file transfers between a client and a server?
FTP
2. What are two forms of application layer software? (Choose two.)
applications , services
3. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client-server model? (Choose two.)
centralized administration , security is easier to enforce
4. What is the purpose of resource records in DNS?
used by the server to resolve names
5. What is the automated service that matches resource names with the required IP address?
DNS
6. What three protocols operate at the Application layer of the OSI model? (Choose three.)
DNS, SMTP, POP
7. What are three properties of peer-to-peer applications? (Choose three.)
acts as both a client and server within the same communication.
hybrid mode includes a centralized directory of files.
can be used in client-server networks.
8. Which application layer protocols correctly match a corresponding function? (Choose two.)
HTTP transfers data from a web server to a client
Telnet provides a virtual connection for remote access
9. Which email components are used to forward mail between servers? (Choose two.)
MTA
SMTP
10. As compared to SSH, what is the primary disadvantage of telnet?
does not support encryption
11. Which statements are correct concerning the role of the MTA in handling email? (Choose three.)
receives email from the client’s MUA
passes email to the MDA for final delivery
uses SMTP to route email between servers
12. Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)
HTTP
HTTPS
13. A small home network has been installed to interconnect three computers together for gaming and file sharing. What two properties represent this network type? (Choose two.)
Security is difficult to enforce.
A computer that responds to a file sharing request is functioning as a server.
14. Which layer of the OSI model supplies services that allow user to interface with the network?
application
15. Refer to the exhibit. What is the destination port for the communication that is represented on line 5?
80
16. What are two characteristics of peer-to-peer networks? (Choose two.)
decentralized resources
resource sharing without a dedicated server
17. What application layer protocol describes the services that are used for file sharing in Microsoft networks?
SMB
18. What are two characteristics of clients in data networks? (Choose two.)
initiate data exchanges
may upload data to servers
19. What is the role of the OSI application layer?
provides the interface between the applications on either end of the network
20. How does the application layer on a server usually process multiple client request for services?
uses support from lower layer functions to distinguish between connections to the service

CCNA FINAL EXAM
1. Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)
Router(config)# line vty 0 3
Router(config-line)# password c13c0
Router(config-line)# login
-The entries specify four Telnet lines for remote access.
-Access will be permitted for Telnet using "c13c0" as the password.

2. Which two actions could be taken by a router if a specific match is not made to a route in the routing table? (Choose two.)
-Neighboring routers are polled to find the best path.
-The packet will be forwarded to a default route if one is present.

3. Refer to the exhibit. The network administrator remotely accesses the CLI of RouterB from PC1 using a secure connection. Which statement is true about this connection?
-Only the exchange of the Telnet username and password is encrypted.

4. Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.)
-The network on which this computer resides can have 30 hosts.
-The address that is assigned to the computer represents private addressing.
-The IP address that is assigned as the default gateway is valid for this host.

5. What information can be gathered by using the command netstat?
-active TCP connections

6. Refer to the exhibit. The nslookup command that is shown was issued on a Windows PC host. What does the 10.32.5.74 address represent?
-the primary DNS server for the host

7. Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1 using Telnet. Which statement is true about this connection?
-The connection is made through a VTY session on the router.

8. Which three addresses are private IP addresses? (Choose three.)
-10.0.0.1
-192.168.8.8

9. Refer to the exhibit. Host C is able to ping 127.0.0.1 successfully, but is unable to communicate with hosts A and B in the organization. What is the likely cause of the problem?
-Hosts A and B are not on the same subnet as host C.

10. Which OSI layer addressing is required to route packets between two networks?
-Layer 3

11. What is the effect of using the Router# copy running-config startup-config command on a router?
-The contents of NVRAM will change.

12. A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?
-Use the ping 127.0.0.1 command at the command prompt.

13. Which subnet mask will allow 2040 hosts per subnet on the IP network
-255.255.248.0

14. Refer to the exhibit. When computer A sends a frame to computer D, what computers receive the frame?
-only computer D

15. Refer to the exhibit. While configuring a network, a technician wired each end of a Category 5e cable as shown. Which two statements are true about this setup? (Choose two.)
-The cable is suitable for connecting a switch to a router Ethernet port.
-The cable is suitable for connecting dissimilar types of devices.

16. Refer to the exhibit. Which layered network model is shown in the diagram?
-TCP/IP

17. An administrator makes changes to the default configuration of a router and saves them to NVRAM. After testing, it is discovered that the configurations did not have the desired effect and must be removed. What steps must be taken to remove the changes and return the router to the default configuration?
-Issue the erase startup-config command, and then reboot the router.

18. Refer to the exhibit. Host A and B are unable to communicate with each other. What is the reason for this?
-The gateway addresses are network addresses.

19. Refer to the exhibit. A network technician has made several changes to R1 since the configuration has last been saved. The modified configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configuration on a TFTP server before reloading. Which action will cause the unmodified data to be saved on the TFTP server?
- basta ung may 192.168.3.2 tapos R1-config

20. What can the user do from the command prompt, Router(config-line)# ?
-Configure one of the physical or virtual lines.

21. Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with its default gateway?
-Use the ping 10.0.0.254 command.

22. Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are shown. The router cannot ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this problem?
- Configure an IP address on interface serial 0/0/0.

23. A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?
-enable secret

24. What are two purposes for configuring a banner on a router? (Choose two.)
-to assist in legal prosecution for unauthorized access
-to provide a welcome message to users who access the router

25. Refer to the exhibit. A PC is communicating with another PC on a remote network. The two networks are connected by three routers. Which action will help to identify the path between the hosts?
- Use the tracert command at the host.

26. Refer to the exhibit. Which list refers only to end devices?
-D,E,F,G

27. When must a router serial interface be configured with the clock rate command?
-when the interface is functioning as a DCE device

28. Which table accurately associates the RFC 1918 private IP addresses with the correct network mask?
- 192.168.0.0 |255.255.255.0
172.16.0.0 |255.240.0.0
10.0.0.0 | 255.0.0.0

29. Refer to the exhibit. Which two layers of the OSI model describe the same functions as the transport and internet layers of the TCP/IP model? (Choose two.)
-transport layer
-network layer

30. What happens when a host station receives a frame that contains its own MAC address in the destination field?
-The Layer 2 information is removed and the frame is pushed up to Layer 3.

31. Refer to the exhibit. Host A is configured with the correct IP address for the default gateway of the router R1 FastEthernet0/1 interface. How will a packet that is sent from host A to host B be handled by the devices on the network?
- R1 will forward the packet to its default gateway, the next hop router R2. R2 will forward the packet to the directly connected network 10.1.1.0/24.

32. What type of network is maintained if a server takes no dedicated role in the network?
-peer-to-peer

33. In a network design project, a network designer needs to select a device to provide collision free connections to 40 hosts on the LAN. Which device should be selected?
-switch

34. Which TCP/IP model layer creates additional overhead on network resources due to acknowledgments, tracking, and retransmission of data?
-transport

35. How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0?
-2046

36. Which service is used when the nslookup command is issued on a computer?
-DNS

37. Which process provides the means to send and receive data when running multiple applications at the same time on a computer?
-sequencing

38. Which three IPv4 addresses represent valid host addresses for a subnet? (Choose three.)
-10.1.12.113/28
-10.1.11.5/27
-10.1.11.97/27

39. What is the consequence of issuing the erase startup-config command in privileged EXEC mode on a Cisco router?
-Data stored in NVRAM will be erased.

40. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?
-IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17

41. What is the Cisco IOS?
-system software for Cisco devices

42. Which router configuration mode will require user authentication if an administrator issues the enable secret command?
-privileged executive mode

43. Which command or commands will require authentication to access the privileged exec mode?
RTRA(config)# line vty 0 4
RTRA(config-line)# login
RTRA(config-line)# password cisco

44. A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?
-router

45. Which statement is true about Layer 3 addresses?
-They are used in routing decisions.

46. Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server. Which client application will allow this request to be started?
-basta ung internet explorer

47. Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission?
- transport

48. Refer to the exhibit. PC1 is unable to access PC2. To troubleshoot this problem, the technician needs to confirm that the next hop interface is operational. Which default gateway address should the technician ping from PC1 to confirm this?
-10.0.0.254

49. An administrator is in the middle of entering a lengthy command when suddenly output from the IOS appears stating that an interface has gone down and then up again. Consequently, the command that the administrator was typing is no longer legible on the terminal. What CLI keystrokes can be entered to return to the line that the administrator was typing?
-Ctrl-Z

50. Which option represents a point-to-point logical topology diagram?
-ung dalawang pc na nakakabit sa router na naka serial dte

51. Which physical component is used to access and perform the initial configuration on a new unconfigured router?
-ung may console na pic

52. Which option shows how a router will route packets to a remote network?
- ung may D C C D