CCNA1 Chapter 4 Exam Study Guide

1. What is dynamically selected by the source host when forwarding data?

                destination logical address

                source physical address

                default gateway address

                source port

2. Which three features allow TCP to reliably and accurately track the transmission of data from source to destination? (Choose three.)

                flow control

                urgent pointer

                best effort delivery

                session establishment

                connectionless services

                numbering and sequencing

3. Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)

                The local host is using three client sessions.

                The local host is using web sessions to a remote server.

                The local host is listening for TCP connections using public addresses.

                The local host is using well-known port numbers to identify the source ports.

                The local host is performing the three-way handshake with 192.168.1.101:1037.

    
4. 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.

               

5. Which event occurs during the transport layer three-way handshake?

                The two applications exchange data.

                TCP initializes the sequence numbers for the sessions.

                UDP establishes the maximum number of bytes to be sent.

                The server acknowledges the bytes of data received from the client.

6. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?

                application

                presentation

                session

                transport

                network

7. Which is an important characteristic of UDP?

                acknowledgement of data delivery

                minimal delays in data delivery

                high reliability of data delivery

                same order data delivery

8. Which information is found in both the TCP and UDP header information?

                sequencing

                flow control

                acknowledgments

                source and destination port

9. 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

10. After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?

                13

                53

                80

                1024

                1728

11. Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data delivery?

                TCP

                IP

                UDP

                HTTP

                DNS

12. What mechanism is used by TCP to provide flow control as segments travel from source to destination?

                sequence numbers

                session establishment

                window size

                acknowledgments

13. 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

14. During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?

                The packets will not be delivered.

                The packets will be retransmitted from the source.

                The packets will be delivered and reassembled at the destination.

                The packets will be delivered and not reassembled at the destination.

        

     

15. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?

                Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.

                Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.

                Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.

                Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.

                Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.

                Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.

16. What are two features of the User Datagram Protocol (UDP)? (Choose two.)

                flow control

                low overhead

                connectionless

                connection-oriented

                sequence and acknowledgements

               

17. 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

18. Which two options represent Layer 4 addressing? (Choose two.)

                identifies the destination network

                identifies source and destination hosts

                identifies the communicating applications

                identifies multiple conversations between the hosts

                identifies the devices communicating over the local media

19. 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

20. Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?

                session establishment

                segment retransmit

                data transfer

                session disconnect

CCNA1 Chapter 3 Exam Study Guide

1. Which layer of the OSI model supplies services that allow user to interface with the network?

                physical

                session

                network

                presentation

                application

                transport

               

2. What are two forms of application layer software? (Choose two.)

                applications

                dialogs

                requests

                services

                syntax

               

3. As compared to SSH, what is the primary disadvantage of telnet?

                not widely available

                does not support encryption

                consumes more network bandwidth

                does not support authentication

               

4. What is the purpose of resource records in DNS?

                temporarily holds resolved entries

                used by the server to resolve names

                sent by the client to during a query

                passes authentication information between the server and client

               

5. What is the automated service that matches resource names with the required IP address?

                HTTP

                SSH

                FQDN

                DNS

                Telnet

                SMTP

6. Which email components are used to forward mail between servers? (Choose two.)

                MDA

                IMAP

                MTA

                POP

                SMTP

                MUA

               

7. Which application layer protocols correctly match a corresponding function? (Choose two.)

                DNS dynamically allocates IP addresses to hosts

                HTTP transfers data from a web server to a client

                POP delivers email from the client to the server email server

                SMTP supports file sharing

                Telnet provides a virtual connection for remote access

               

8. What is the role of the OSI application layer?

                provides segmentation of data

                provides encryption and conversion of data

                provides the interface between the applications on either end of the network

                provides control of all the data flowing between the source and destination devices

               

9. Refer to the exhibit. What is the destination port for the communication that is represented on line 5?

                80

                1261

                15533

                3912

                65520

               

10. 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.)

                User accounts are centralized.

                Security is difficult to enforce.

                Specialized operating system software is required.

                File permissions are controlled by a single computer.

                A computer that responds to a file sharing request is functioning as a server.

               

11. What are two characteristics of peer-to-peer networks? (Choose two.)

                scalable

                one way data flow

                decentralized resources

                centralized user accounts

                resource sharing without a dedicated server

               

12. Which two protocols are used to control the transfer of web resources from a web server to a client browser? (Choose two.)

                ASP

                FTP

                HTML

                HTTP

                HTTPS

                IP

               

13. 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

                does not require specialized software

                security is easier to enforce

                lower cost implementation

                provides a single point of failure

               

14. What are two characteristics of clients in data networks? (Choose two.)

                use daemons

                initiate data exchanges

                are repositories of data

                may upload data to servers

                listen for requests from servers

               

15. What three protocols operate at the Application layer of the OSI model? (Choose three.)

                ARP

                DNS

                PPP

                SMTP

                POP

                ICMP

               

16. What are three properties of peer-to-peer applications? (Choose three.)

                acts as both a client and server within the same communication

                requires centralized account administration

                hybrid mode includes a centralized directory of files

                can be used in client-server networks

                requires a direct physical connection between devices

                centralized authentication is required

17. What application layer protocol describes the services that are used for file sharing in Microsoft networks?

                DHCP

                DNS

                SMB

                SMTP

                Telnet

18. What application layer protocol is commonly used to support for file transfers between a client and a server?

                HTML

                HTTP

                FTP

                Telnet

19. Which statements are correct concerning the role of the MTA in handling email? (Choose three.)

                routes email to the MDA on other servers

                receives email from the client's MUA

                receives email via the POP3 protocol

                passes email to the MDA for final delivery

                uses SMTP to route email between servers

                delivers email to clients via the POP3 protocol   

20. How does the application layer on a server usually process multiple client request for services?

                ceases all connections to the service

                denies multiple connections to a single daemon

                suspends the current connection to allow the new connection

                uses support from lower layer functions to distinguish between connections to the service

CNNA1 Chapter 2 Exam Study Guide

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

            determine pathways for data

            initiate data communications

            retime and retransmit data signals

            originate the flow of data

            manage data flows

            final termination point for data flow

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

            define the structure of layer specific PDU's

            dictate how to accomplish layer functions

            outline the functions necessary for communications between layers

            limit the need for hardware compatibility

            require layer dependent encapsulations

            eliminate standardization among vendors

3. What are two functions of encapsulation? (Choose two.)

            tracks delay between end devices

            enables consistent network paths for communication

            allows modification of the original data before transmission

            identifies pieces of data as part of the same communication

            ensures that data pieces can be directed to the correct receiving end device

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

            supports error detection

            ensures ordered arrival of data

            provides delivery to correct destination

            identifies the devices on the local network

            assists intermediary devices with processing and path selection

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

            Network

            Transport

            Physical

            Data Link

            Session

6. What is a PDU?

            corruption of a frame during transmission

            data reassembled at the destination

            retransmitted packets due to lost communication

            a layer specific encapsulation

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

            manage data flows

            originate data flow

            retime and retransmit data signals

            determine pathways for data

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?"

            the destination device

            an end device

            an intermediate device

            a media device

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

            Network A -- WAN

            Network B -- WAN

            Network C -- LAN

            Network B -- MAN

            Network C -- WAN

            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.

            The connection between segments in the LAN is usually through a leased connection.

            The security and access control of the network are controlled by a service provider.

            A LAN provides network services and access to applications for users within a common    organization.

            Each end of the network is generally connected to a Telecommunication Service Provider (TSP).

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

            piping

            PDU

            streaming

            multiplexing

            encapsulation

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

            to identify devices on the local media

            to identify the hops between source and destination

            to identify to the intermediary devices the best path through the network

            to identify the source and destination end devices that are communicating

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

13. What device is considered an intermediary device?

            file server

            IP phone

            laptop

            printer

            switch

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

            source

            end

            transfer

            intermediary

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

            WAN

            MAN

            LAN

            WLAN

16. Which layer encapsulates the segment into packets?

            physical

            data link

            network

            transport

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

            the destination device on the local media

            the destination host address

            the bits that will be transferred over the media

            the source application or process creating the data

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

            A, C, D

            B, E, G, H

            C, D, G, H, I, J

            D, E, F, H, I, J

            E, F, H, I, J

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

            No address is added.

            The logical address is added.

            The physical address is added.

            The process port number is added.

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

            path determination and packet switching

            data presentation

            reliability, flow control, and error detection

            network media control

            the division of segments into packets

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

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

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

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

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

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