Notes

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

1. What is the purpose of the TCP three-way handshake?
to adjust the size of the sliding window
to establish the presence of the destination host
to confirm the availability of the destination port
to synchronize sequence numbers prior to data transmission


2. What are the features of the User Datagram Protocol (UDP). (Choose three.)
no guaranteed delivery of datagrams
connection-oriented
provides reliable full-duplex data transmission
reliability provided by the application layer
connectionless
utilizes sliding windowing techniques


3. Which protocol is used by FTP to transfer files over the Internet?
TCP
SMTP
UDP
SNMP


4. How does windowing ensure that a data packet will be delivered to the recipient in the same order, undamaged, and reliably? (Choose two.)
acknowledgements
collision avoidance
window size adjustment
dynamic packet size adjustment
encapsulation packet size


5. The network administrator for ABC company needs to send large amounts of information to many destinations at one time and does not need any verification that the data has been received. Which transport protocol would the administrator use?
TCP
IP
UDP
IGRP
SMTP
SNMP


6.
Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
This is a UDP header.
This contains a Telnet request.
This contains a TFTP data transfer.
The return packet from this remote host will have an Acknowledgement Number of 43693.
This is a TCP header.


7.
Which of the following best describe the transport layer three-way handshake? (Choose two.)
TCP is established by using the three-way handshake to synchronize sequence numbers.
UDP is established by using the three-way handshake to synchronize sequence numbers.
The three-way handshake is used to establish a maximum data packet size to be sent, thus minimizing the error rate.
The three-way handshake provides a global clock to establish window sizes.
TCP may have different mechanisms to choose initial sequence numbers, and therefore without the three-way handshake, sequence numbers would be out of sync.


8. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
0 to 255
256 to 1022
0 to 1023
1024 to 2047
49153 to 65535


9. What is dynamically assigned by the source host when forwarding data?
destination IP address
destination port number
default gateway address
source IP address
source port number


10. Why are port numbers included in the TCP header of a segment?
to indicate the correct router interface that should be used to forward a segment
to identify which switch ports should receive or forward the segment
to determine which Layer 3 protocol should be used to encapsulate the data
to enable a receiving host to forward the data to the appropriate application
to allow the receiving host to assemble the packet in the proper order


11. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?
application
presentation
session
transport
network


12.
Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?
create a Layer 1 jam signal
reach a timeout and resend the data that needs to be acknowledged
send a RESET bit to the host
change the window size in the Layer 4 header


13. Why is flow control used for TCP data transfer?
to synchronize equipment speed for sent data
to synchronize and order sequence numbers so data is sent in complete numerical order
to prevent the receiver from being overwhelmed by incoming data
to synchronize window size on the server
to simplify data transfer to multiple hosts