CCNA 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.)
–> Application
–> 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? (Be careful its asking in Microsoft network)
–> 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 Chapter 2

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1.Which statements correctly identify the role of intermediary devices in the network? (Choose three.)

–> determine pathways for data
–> retime and retransmit data signals
–> manage data flows

2.Select the statements that are correct concerning network protocols. (Choose three.)

–> define the structure of layer specific PDU’s
–> outline the functions necessary for communications between layers
–> require layer dependent encapsulations

3.What are the key functions of encapsulation? (Choose three.)

–> identifies pieces of data as part of the same communication
–> ensures that data pieces can be directed to the correct receiving end device
–> enables the reassembly of complete messages

4.What is a primary function of the trailer information added by the data link layer encapsulation?

–> supports error detection

5.Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)

–> Physical
–> Data Link

6.What is a PDU?

–> a layer specific encapsulation

7.Which characteristic correctly refers to end devices in a network?

–> originate data flow

8.Refer to the exhibit. “Cell A” at IP address 10.0.0.34 has established an IP session with “IP Phone 1″ at IP address 172.16.1.103. Based upon the graphic, which device type best describes the function of wireless device “Cell A?”

–> an end device

9.Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)

–> Network B — WAN
–> Network C — LAN
–> Network A — LAN

10.Which three statements best describe a Local Area Network (LAN)? (Choose three.)

–> A LAN is usually in a single geographical area.
–> The network is administered by a single organization.
–> A LAN provides network services and access to applications for users within a common organization.

11.Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?

–> multiplexing

12.What is the primary purpose of Layer 4 port assignment?

–> to identify the processes or services that are communicating within the end devices

13.What device is considered an intermediary device?

–> Switch

14.Refer to the exhibit. Which term correctly identifies the device type that is included in the area B (GREEN AREA)?

–> intermediary

15.Refer to the exhibit. What type of network is shown?

–> LAN

16.Which layer encapsulates the segment into packets?

–> network

17.What can be identified by examining the network layer header?

–> the destination host address

18.Refer to the exhibit. Which set of devices contains only end devices?

–> E, F, H, I, J

19.During the encapsulation process, what occurs at the data link layer?

–> The physical address is added.

20.What is the purpose of the TCP/IP Network Access layer?

–> detailing the components that make up the physical link and how to access it

21.What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?

–> application, presentation, session, transport, network, data link, physical

CCNA Chapter 1

1. If a router cannot find a valid configuration file during the startup sequence, what will occur?
- The router will prompt the user for a response to enter setup mode.

2. Refer to the exhibit. The network administrator has configured the router with the interface IP  addresses shown for the directly connected networks. Pings from the router to hosts on the  connected networks or pings between router interfaces are not working. What is the most likely problem?

• The interfaces must be enabled with the no shutdown command.

3.Refer to the exhibit. What can be concluded from the routing table output in the exhibit? (Choose two.)
-The FastEthernet0/0 and Serial0/0/0 interfaces of this router were configured with an IP address and the no shutdown command.

• An IP packet received by this router with a destination address of 198.18.9.1 will be forwarded out of the Serial0/0/0 interface.

4.Refer to the exhibit. The frame shown in the exhibit was received by the router. The router interfaces are operational. How will the router process this frame? (Choose two.

-The router will change the frame type to one supported by the WAN link before forwarding the frame.

• The frame was received on the Fa0/0 interface of the router and will be switched to the S0/0/0 interface.

5. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

• VTY interface

-console interface
-privileged EXEC mode

6. Which two statements correctly describe the components of a router? (Choose two.)

• ROM contains diagnostics executed on hardware modules.
• Flash memory does not lose its contents during a reboot.

7.Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem?

• Host 1 and host 2 are on different networks.

8. Which are functions of a router? (Choose three.)

• packet switching
• segmentation of broadcast domains
• selection of best path based on logical addressing

9.Refer to the exhibit. All routers have a route in its routing table to each network that is shown in the exhibit. Default routes have not been issued on these routers. What can be concluded about how packets are forwarded in this network? (Choose two.)

• If RouterA receives a packet that is destined for 192.168.3.146, it will be forwarded out interface S0/0/1.
• If RouterB receives a packet that is destined for 10.5.27.15, it will be forwarded out interface S0/0/1.

10.The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)

• Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
• Sydney(config-if)# no shutdown
• Sydney(config-if)# clock rate 56000

11.Refer to the exhibit. What can be concluded from the output of the running-configuration of a router?

• The commands that are displayed determine the current operation of the router.

12.Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.)

• destination IP address: 192.168.10.134
• destination MAC address: 9999.DADC.1234

13. What is the outcome of entering these commands?

R1(config)# line vty 0 4
R1(config-line)# password check123
R1(config-line)# login

• sets the password to be used for connecting to this router via Telnet

14. Which of the following is the correct flow of routines for a router startup?

• load bootstrap, load IOS, apply configuration

15. What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.)

• decapsulates the Layer 3 packet by stripping off the Layer 2 frame header
• uses the destination IP Address in the IP header to look up the next-hop address in the routing table
• encapsulates the Layer 3 packet into the new Layer 2 frame and forwards it out the exit interface

16. The network administrator needs to connect two routers directly via their FastEthernet ports. What cable should the network administrator use?

• cross-over

17. Which two statements describe characteristics of load balancing? (Choose two.)

• Load balancing allows a router to forward packets over multiple paths to the same destination network.

-Unequal cost load balancing is supported by EIGRP.

18. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.)

• the last restart method

-the configuration register settings

• the location from where the IOS loaded

19.Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.)

• 1

-4

20. From what location can a router load the Cisco IOS during the boot process? (Choose two.)

• TFTP server
• Flash memory

21. A network administrator has just entered new configurations into Router1. Which command should be executed to save configuration changes to NVRAM?

• Router1(config)# copy running-config startup-config

22. What is the default sequence for loading the configuration file?

• NVRAM, TFTP, CONSOLE

23. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface?

• the Layer 2 source and destination address