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2)
1)
Which devices connect individual hosts to the network and can connect multiple individual networks to form an internetwork? (Choose three.) communication server firewall network printer PDA router VoIP phone
2)
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
3)
What is true of data as it flows across the internetwork? (Choose three.) A single email transaction segmented into multiple packets will take the same path across a WAN from source to destination. Overhead is used to notify devices on a network that errors have been detected in data transmission. Path selection is important for optimizing data flow and increasing performance. Managing data flow and regulating traffic types is handled by intermediary devices. Application data is altered as network devices analyze and determine the best path to the destination. End devices such as hubs and routers are used to originate the flow of data.
4)
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 hardware compatibility require layer dependent encapsulations eliminate standardization among vendors






5)
What are the key functions of encapsulation? (Choose three.) allows modification of the original data before transmission identifies pieces of data as part of the same communication enables consistent network paths for communication ensures that data pieces can be directed to the correct receiving end device enables the reassembly of complete messages tracks delay between end devices
6)
What are the primary functions of the header and trailer information resulting from encapsulation? (Choose three.) prevent data from being captured or altered assist intermediary devices with processing and path selection uniquely identifies source and destination devices ensure ordered arrival of data assist intermediary devices with the modification of data manage error recovery and data integrity
7)
According to the OSI model, FTP, TFTP, Telnet, and HTTP are used to check connectivity up to which layer? Network Transport Session Presentation Application
8)
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
9)
What is true regarding information that travels from the source to the destination? (Choose two.) The addressing process is dependent upon the data content. Headers are added to uniquely identify hosts. Protocols determine the type, structure and purpose of labels and addressing. The process of removing labels is called encapsulation. Each layers addressing is dependent upon other layers of the OSI model.

10)
What are the benefits of using a layered approach to assist with network troubleshooting? (Choose three.) Guarantee the delivery of sent and received Email. Prevent technology change at one layer from affecting technology at another layer of the model. To make network communication easier to understand. In order to describe how the top layer of the model communicates directly with the top layer in the communication process. Allow competitors to design products at different layer of the model and have them work together. Insure that all copy right rules are followed by all vendors.
11)
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
3)
1)
Which of the following are examples of TCP/IP application layer protocols? (Choose three.) a terminal emulation protocol that supports remote console connections with various network devices a protocol created by IBM that makes it easier for mainframes to connect to remote offices a protocol responsible for transporting electronic mail on TCP/IP networks and the Internet a protocol that controls the rate at which data is sent to another computer a protocol that exchanges network management information between a network device and a management console
2)
Which of the following are benefits of peer-to-peer networks? (Choose three.) centralized security easy to create very scalable no centralized equipment required centralized administrator not required centralized control of assets
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 does not require specialized software security is easier to enforce lower cost implementation provides a single point of failure

4)
Which are valid DNS resource record types? (Choose three.) A NS MTA MX FQDN MAU
5)
What is the automated service that matches resource names with the required IP address? HTTP SSH FQDN DNS Telnet SMTP
6)
What three protocols operate at the Application layer of the OSI model? (Choose three.) ARP DNS PPP SMTP POP ICMP
7)
What are the two forms of application layer software? (Choose two.) applications processes services dialogs syntax daemons
8)
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 does not require specialized software centralized authentication is required
9)
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
10)
What are three common HTTP message types? (Choose three.) GET PUSH POST HTML UPLOAD PUT
11)
Which email components are used to forward mail between servers? (Choose two.) MDA IMAP MTA POP SMTP MUA
12)
What is the primary disadvantage of telnet? does not support authentication consumes network bandwidth utilizes client resources not widely available does not support encryption requires remote access
13)
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
14)
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
4)
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
5)
1)
In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another? destination network address source network address source MAC address well known port destination address
2)
Which two of the following statements accurately describe a default gateway? (Choose two.) A default gateway is used when a host transfers data to another host on the same network segment. A default gateway is the IP address assigned to the near-side router interface. A default gateway is the IP address assigned to the near-side switch interface. A default gateway is used when a host transfers data to a host on another network segment.

3)
What information is added during encapsulation at OSI Layer 3? source and destination MAC source and destination application protocol source and destination port number source and destination IP address
4)
In a connectionless system, which of the following is correct? The destination is contacted before a packet is sent. The destination is not contacted before a packet is sent. The destination sends an acknowledgement to the source that indicates the packet was received. The destination sends an acknowledgement to the source that requests the next packet to be sent.
5)
Which statement below is talking about the network layer? Provides electrical, mechanical, procedural and functional means for activating and maintaining the link between systems. Establishes, maintains, and manages sessions between applications. Uses the Internet Protocol addressing scheme to determine the best way to move data from one place to another. Uses a MAC address to provide physical transmission across media and handles error notification, network topology, and flow control.
6)
Which IP packet field will prevent endless loops? type-of-service identification flags time-to-live header checksum
7)
Which portion of the network layer address does a router use to forward packets? host portion broadcast address network portion gateway address









8)
Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network? 192.135.250.1 192.31.7.1 192.133.219.0 192.133.219.1
9)
If the default gateway is configured incorrectly on the host, what is the impact on communications? The host is unable to communicate on the local network. The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks. The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network. There is no impact on communications
10)
What is the purpose of a default gateway? physically connects a computer to a network provides a permanent address to a computer identifies the network to which a computer is connected identifies the logical address of a networked computer and uniquely identifies it to the rest of the network identifies the device that allows local network computers to communicate with devices on other networks










11)
Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent? Gateway for the 192.168.1.0 network Gateway for the 192.168.3.0 network IP assigned to the serial port on Router A IP assigned to the serial port on Router B
12)
What type of routing uses information that is manually entered into the routing table? dynamic interior static standard
13)
What are the functions of a routing protocol? (Choose three.) provides the process for sharing route information between routers enables routers to manually configure the best path enables routers to maintain the routing tables enables routers to choose the best path to route the packet provides the process for sharing IP addresses between routers enables routers to change Layer 3 address header
14)
When the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (Choose two.) The router sends an ARP request to determine the required next hop address. The router discards the packet. The router forwards the packet toward the next hop indicated in the ARP table. The router forwards the packet to the interface indicated by the source address. The router forwards the packet out the interface indicated by the default route entry
6)

1)
Refer to the exhibit. Which netwo