▷ CCNA1 v7 ITN | Modules 14 - 15 Exam Answers

CCNA1 v7 Modules 14 - 15 Exam Answers

Summary

Check answers here: CCNA1 v7 ITN Modules 14 – 15: Communicating Between Networks Exam Answers. CCNA 200-301 Passed 100% !!

This exam will cover material from Modules 14- 15 Network Application Communications of the CCNA1 – Introduction to Networks v7.0 (ITN) curriculum. This exam will be scored using the Weighted Model where each MCSA (Multiple-Choice Single-Answer) is worth two points and each MCMA (Multiple-Choice Multiple-Answer) is worth one point for each correct option. Other tasks types such as fill-in-the-blank, drag and drop (matching) and Packet Tracer items may be included in this exam. For Packet Tracer tasks, you must have the latest version of Packet Tracer installed on your machine.

This exam will cover material from Modules 14 – 15 of the CCNA1 – Introduction to Networks v7.0 (ITN) curriculum.

This exam will be scored using the Weighted Model where each MCSA (Multiple-Choice Single-Answer) is worth two points and each MCMA (Multiple-Choice Multiple-Answer) is worth one point for each correct option. If more options are selected than required, the student will receive a score of zero.

CCNA1 v7 Network Application Communications Exam Answers

What is the TCP mechanism used in congestion avoidance ?

two-way handshake

sliding window

socket pair

three-way handshake

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting TFTP service. What number will be used as the destination port number in the sending packet?

Correct! Wrong!

Which two fields are included in the TCP header but not in the UDP header? (Choose two.)

Please select 2 correct answers

sequence number

source port

checksum

window

destination port

Correct! Wrong!

Which field in the TCP header indicates the status of the three-way handshake process?

control bits

checksum

reserved

window

Correct! Wrong!

What is a responsibility of transport layer protocols?

translating private IP addresses to public IP addresses

providing network access

tracking individual conversations

determining the best path to forward a packet

Correct! Wrong!

Why is DHCP preferred for use on large networks?

It prevents sharing of files that are copyrighted.

It is a more efficient way to manage IP addresses than static address assignment.

DHCP uses a reliable transport layer protocol.

Large networks send more requests for domain to IP address resolution than do smaller networks.

Hosts on large networks require more IP addressing configuration settings than hosts on small networks.

Correct! Wrong!

Which scenario describes a function provided by the transport layer?

A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.

A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

Correct! Wrong!

What is true about the Server Message Block protocol?

Different SMB message types have a different format.

SMB uses the FTP protocol for communication.

SMB messages cannot authenticate a session.

Clients establish a long term connection to servers.

Correct! Wrong!

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received four packets of data from the PC?

3001

1501

6001

1500

Correct! Wrong!

Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)

Please select 3 correct answers

presentation layer

application layer

session layer

transport layer

physical layer

data link layer

Correct! Wrong!

Which statement is true about FTP?

The client can download data from or upload data to the server.

The client can choose if FTP is going to establish one or two connections with the server.

FTP does not provide reliability during data transmission.

FTP is a peer-to-peer application.

Correct! Wrong!

Which application layer protocol uses message types such as GET, PUT, and POST?

HTTP

SMTP

POP3

DHCP

DNS

Correct! Wrong!

A wireless host needs to request an IP address. What protocol would be used to process the request?

DHCP

ICMP

HTTP

SNMP

FTP

Correct! Wrong!

Which protocol uses encryption?

HTTPS

DHCP

FTP

DNS

Correct! Wrong!

A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)

Please select 3 correct answers

SMTP

SNMP

DHCP

FTP

DNS

HTTP

Correct! Wrong!

What is a socket?

the combination of the source and destination sequence numbers and port numbers

the combination of the source and destination sequence and acknowledgment numbers

the combination of the source and destination IP address and source and destination Ethernet address

the combination of a source IP address and port number or a destination IP address and port number

Correct! Wrong!

Which protocol can be used to transfer messages from an email server to an email client?

POP3

SMTP

SNMP

HTTP

Correct! Wrong!

What type of applications are best suited for using UDP?

applications that are sensitive to packet loss

applications that are sensitive to delay

applications that require retransmission of lost segments

applications that need reliable delivery

Correct! Wrong!

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received two packets of data from the PC?

6000

4500

6001

3001

Correct! Wrong!

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?

destination and source port numbers

destination and source logical network addresses

destination and source physical addresses

timing and synchronization

Correct! Wrong!

What part of the URL, http://www.cisco.com/index.html, represents the top-level DNS domain?

.com

http

www

index

Correct! Wrong!

What does a client do when it has UDP datagrams to send?

It just sends the datagrams.

It sends a simplified three-way handshake to the server.

It queries the server to see if it is ready to receive data.

It sends to the server a segment with the SYN flag set to synchronize the conversation.

Correct! Wrong!

Which three protocols operate at the application layer of the TCP/IP model? (Choose three.)

Please select 3 correct answers

ARP

UDP

TCP

DHCP

FTP

POP3

Correct! Wrong!

Which three application layer protocols use TCP? (Choose three.)

Please select 3 correct answers

SNMP

DHCP

TFTP

FTP

HTTP

SMTP

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting SSH service. What number will be used as the destination port number in the sending packet?

Correct! Wrong!

What happens if part of an FTP message is not delivered to the destination?

The part of the FTP message that was lost is re-sent.

The entire FTP message is re-sent.

The FTP source host sends a query to the destination host.

The message is lost because FTP does not use a reliable delivery method.

Correct! Wrong!

Network congestion has resulted in the source learning of the loss of TCP segments that were sent to the destination. What is one way that the TCP protocol addresses this?

The destination decreases the window size.

The destination sends fewer acknowledgement messages in order to conserve bandwidth.

The source decreases the amount of data that it transmits before it receives an acknowledgement from the destination.

The source decreases the window size to decrease the rate of transmission from the destination.

Correct! Wrong!

On a home network, which device is most likely to provide dynamic IP addressing to clients on the home network?

a dedicated file server

an ISP DHCP server

a DNS server

a home router

Correct! Wrong!

Which OSI layer provides the interface between the applications used to communicate and the underlying network over which messages are transmitted?

session

presentation

application

transport

Correct! Wrong!

Which two characteristics are associated with UDP sessions? (Choose two.)

Please select 2 correct answers

Transmitted data segments are tracked.

Unacknowledged data packets are retransmitted.

Received data is unacknowledged.

Destination devices reassemble messages and pass them to an application.

Destination devices receive traffic with minimal delay.

Correct! Wrong!

Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?

SYN

FIN

ACK

RST

Correct! Wrong!

How are port numbers used in the TCP/IP encapsulation process?

If multiple conversations occur that are using the same service, the source port number is used to track the separate conversations.

Source port and destination port numbers are randomly generated.

Source port numbers and destination port numbers are not necessary when UDP is the transport layer protocol being used for the communication.

Destination port numbers are assigned automatically and cannot be changed.

Correct! Wrong!

Which layer in the TCP/IP model is used for formatting, compressing, and encrypting data?

network access

session

internetwork

presentation

application

Correct! Wrong!

Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?

The client sends a synchronization segment to begin the session.

The client randomly selects a source port number.

The client sends an ISN to the server to start the 3-way handshake.

The client sets the window size for the session.

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting HTTPS service. What number will be used as the destination port number in the sending packet?

161

110

443

Correct! Wrong!

Which factor determines TCP window size?

the number of services included in the TCP segment

the amount of data the destination can process at one time

the amount of data the source is capable of sending at one time

the amount of data to be transmitted

Correct! Wrong!

Which three protocols or standards are used at the application layer of the TCP/IP model? (Choose three.)

Please select 3 correct answers

TCP

GIF

HTTP

MPEG

UDP

Correct! Wrong!

In what networking model would eDonkey, eMule, BitTorrent, Bitcoin, and LionShare be used?

point-to-point

master-slave

peer-to-peer

client-based

Correct! Wrong!

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received three packets of data from the PC?

6000

6001

4501

4500

Correct! Wrong!

What information is used by TCP to reassemble and reorder received segments?

fragment numbers

port numbers

acknowledgment numbers

sequence numbers

Correct! Wrong!

What is an advantage of SMB over FTP?

SMB clients can establish a long-term connection to the server.

Only with SMB can data transfers occur in both directions.

SMB is more reliable than FTP because SMB uses TCP and FTP uses UDP.

Only SMB establishes two simultaneous connections with the client, making the data transfer faster.

Correct! Wrong!

Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?

client/server

point-to-point

peer-to-peer

master-slave

Correct! Wrong!

Which three statements characterize UDP? (Choose three.)

Please select 3 correct answers

UDP relies on application layer protocols for error detection.

UDP relies on IP for error detection and recovery.

UDP provides basic connectionless transport layer functions.

UDP provides sophisticated flow control mechanisms.

UDP provides connection-oriented, fast transport of data at Layer 3.

UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.

Correct! Wrong!

The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose three.)

Please select 3 correct answers

physical

transport

session

application

presentation

data link

network

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting SNMP service. What number will be used as the destination port number in the sending packet?

110

443

161

Correct! Wrong!

Which number or set of numbers represents a socket?

10.1.1.15

192.168.1.1:80

01-23-45-67-89-AB

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting SMTP service. What number will be used as the destination port number in the sending packet?

110

161

443

Correct! Wrong!

Which two types of applications are best suited for UDP? (Choose two.)

Please select 2 correct answers

applications that need data flow control

applications that handle reliability themselves

applications that require reliable delivery

applications that need the reordering of segments

applications that can tolerate some data loss, but require little or no delay

Correct! Wrong!

How does a networked server manage requests from multiple clients for different services?

Each request is tracked through the physical address of the client.

Each request is assigned source and destination port numbers.

The server sends all requests through a default gateway.

The server uses IP addresses to identify different services.

Correct! Wrong!

A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?

10 segments

1 segment

1000 segments

100 segments

Correct! Wrong!

What is an example of network communication that uses the client-server model?

A user prints a document by using a printer that is attached to a workstation of a coworker.

A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.

A user uses eMule to download a file that is shared by a friend after the file location is determined.

A workstation initiates an ARP to find the MAC address of a receiving host.

Correct! Wrong!

Which protocol is used by a client to communicate securely with a web server?

SMTP

SMB

HTTPS

IMAP

Correct! Wrong!

What are three responsibilities of the transport layer? (Choose three.)

Please select 3 correct answers

directing packets towards the destination network

identifying the applications and services on the client and server that should handle transmitted data

conducting error detection of the contents in frames

multiplexing multiple communication streams from many users or applications on the same network

meeting the reliability requirements of applications, if any

formatting data into a compatible form for receipt by the destination devices

Correct! Wrong!

Which two protocols may devices use in the application process that sends email? (Choose two.)

Please select 3 correct answers

POP

POP3

DNS

HTTP

SMTP

IMAP

Correct! Wrong!

What is a key characteristic of the peer-to-peer networking model?

network printing using a print server

resource sharing without a dedicated server

social networking without the Internet

wireless networking

Correct! Wrong!

What message type is used by an HTTP client to request data from a web server?

ACK

POST

PUT

GET

Correct! Wrong!

What do the client/server and peer-to-peer network models have in common?

Both models are used only in the wired network environment.

Both models support devices in server and client roles.

Both models have dedicated servers.

Both models require the use of TCP/IP-based protocols.

Correct! Wrong!

Which three fields are used in a UDP segment header? (Choose three.)

Please select 3 correct answers

Window Size

Acknowledgment Number

Length

Sequence Number

Source Port

Checksum

Correct! Wrong!

When retrieving email messages, which protocol allows for easy, centralized storage and backup of emails that would be desirable for a small- to medium-sized business?

HTTPS

POP

SMTP

IMAP

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting telnet service. What number will be used as the destination port number in the sending packet?

443

110

161

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting FTP service. What number will be used as the destination port number in the sending packet?

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting HTTP service. What number will be used as the destination port number in the sending packet?

Correct! Wrong!

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

Please select 2 correct answers

PSH

SYN

RST

URG

FIN

ACK

Correct! Wrong!

What is a characteristic of UDP?

Applications that use UDP are always considered unreliable.

UDP datagrams take the same path and arrive in the correct order at the destination.

UDP reassembles the received datagrams in the order they were received.

UDP only passes data to the network when the destination is ready to receive the data.

Correct! Wrong!

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)

Please select 2 correct answers

FTP

HTTP

POP3

VoIP

DNS

Correct! Wrong!

A client creates a packet to send to a server. The client is requesting POP3 service. What number will be used as the destination port number in the sending packet?

110

Correct! Wrong!

What is the purpose of using a source port number in a TCP communication?

to notify the remote device that the conversation is over

to inquire for a nonreceived segment

to keep track of multiple conversations between devices

to assemble the segments that arrived out of order

Correct! Wrong!

Which TCP/IP model layer is closest to the end user?

internet

network access

transport

application

Correct! Wrong!

An author is uploading one chapter document from a personal computer to a file server of a book publisher. What role is the personal computer assuming in this network model?

master

client

server

slave

transient

Correct! Wrong!

What are two roles of the transport layer in data communication on a network? (Choose two.)

Please select 2 correct answers

identifying the proper application for each communication stream

performing a cyclic redundancy check on the frame for errors

tracking the individual communication between applications on the source and destination hosts

providing the interface between applications and the underlying network over which messages are transmitted

providing frame delimiting to identify bits making up a frame

Correct! Wrong!

Which applications or services allow hosts to act as client and server at the same time?

authentication services

P2P applications

email applications

client/server applications

Correct! Wrong!

Which transport layer feature is used to guarantee session establishment?

TCP 3-way handshake

TCP port number

UDP ACK flag

UDP sequence number

Correct! Wrong!

What is the complete range of TCP and UDP well-known ports?

1024 – 49151

256 – 1023

0 to 255

0 to 1023

Correct! Wrong!

What type of information is contained in a DNS MX record?

the FQDN of the alias used to identify a service

the IP address of an authoritative name server

the IP address for an FQDN entry

the domain name mapped to mail exchange servers

Correct! Wrong!

What is a common protocol that is used with peer-to-peer applications such as WireShare, Bearshare, and Shareaza?

Ethernet

POP

Gnutella

SMTP

Correct! Wrong!

Which application layer protocol is used to provide file-sharing and print services to Microsoft applications?

SMB

DHCP

HTTP

SMTP

Correct! Wrong!

Which two operations are provided by TCP but not by UDP? (Choose two.)

Please select 2 correct answers

reconstructing data in the order received

tracking individual conversations

identifying the applications

acknowledging received data

retransmitting any unacknowledged data

Correct! Wrong!

What are two characteristics of the application layer of the TCP/IP model? (Choose two.)

Please select 2 correct answers

the creation and maintenance of dialogue between source and destination applications

closest to the end user

responsibility for logical addressing

responsibility for physical addressing

Correct! Wrong!

In what two situations would UDP be better than TCP as the preferred transport protocol? (Choose two.)

Please select 2 correct answers

when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated

when delivery overhead is not an issue

when applications do not need to guarantee delivery of the data

when a faster delivery mechanism is needed

when destination port numbers are dynamic

Correct! Wrong!

What is the function of the HTTP GET message?

to upload content to a web server from a web client

to retrieve client email from an email server using TCP port 110

to send error information from a web server to a web client

to request an HTML page from a web server

Correct! Wrong!

Which two tasks can be performed by a local DNS server? (Choose two.)

Please select 2 correct answers

retrieving email messages

allowing data transfer between two network devices

providing IP addresses to local hosts

mapping name-to-IP addresses for internal hosts

forwarding name resolution requests between servers

Correct! Wrong!

Why does HTTP use TCP as the transport layer protocol?

because HTTP is a best-effort protocol

to ensure the fastest possible download speed

because HTTP requires reliable delivery

because transmission errors can be tolerated easily

Correct! Wrong!

What kind of port must be requested from IANA in order to be used with a specific application?

private port

source port

dynamic port

registered port

Correct! Wrong!

Which three statements describe a DHCP Discover message? (Choose three.)

Please select 3 correct answers

The destination IP address is 255.255.255.255.

The message comes from a client seeking an IP address.

The message comes from a server offering an IP address.

All hosts receive the message, but only a DHCP server replies.

The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF).

Only the DHCP server receives the message.

Correct! Wrong!

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

Please select 2 correct answers

resource sharing without a dedicated server

centralized user accounts

one way data flow

scalability

decentralized resources

Correct! Wrong!

Which protocol or service uses UDP for a client-to-server communication and TCP for server-to-server communication?

HTTP

FTP

SMTP

DNS

Correct! Wrong!

ITN | Modules 14 – 15

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CCNA3 v7 ENSA | Final Exam Answers

CCNA3 v7 ENSA | Modules 13 – 14 Exam Answers

CCNA3 v7 ENSA | Modules 9 – 12 Exam Answers

CCNA1 v7 ITN | Modules 14 – 15 Exam Answers

CCNA1 v7 Modules 14 - 15 Exam Answers

CCNA1 v7 Network Application Communications Exam Answers

What is the TCP mechanism used in congestion avoidance ?

A client creates a packet to send to a server. The client is requesting TFTP service. What number will be used as the destination port number in the sending packet?

Which two fields are included in the TCP header but not in the UDP header? (Choose two.)

Which field in the TCP header indicates the status of the three-way handshake process?

What is a responsibility of transport layer protocols?

Why is DHCP preferred for use on large networks?

Which scenario describes a function provided by the transport layer?

What is true about the Server Message Block protocol?

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received four packets of data from the PC?

Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)

Which statement is true about FTP?

Which application layer protocol uses message types such as GET, PUT, and POST?

A wireless host needs to request an IP address. What protocol would be used to process the request?

Which protocol uses encryption?

A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)

What is a socket?

Which protocol can be used to transfer messages from an email server to an email client?

What type of applications are best suited for using UDP?

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received two packets of data from the PC?

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?

What part of the URL, http://www.cisco.com/index.html, represents the top-level DNS domain?

What does a client do when it has UDP datagrams to send?

Which three protocols operate at the application layer of the TCP/IP model? (Choose three.)

Which three application layer protocols use TCP? (Choose three.)

A client creates a packet to send to a server. The client is requesting SSH service. What number will be used as the destination port number in the sending packet?

What happens if part of an FTP message is not delivered to the destination?

Network congestion has resulted in the source learning of the loss of TCP segments that were sent to the destination. What is one way that the TCP protocol addresses this?

On a home network, which device is most likely to provide dynamic IP addressing to clients on the home network?

Which OSI layer provides the interface between the applications used to communicate and the underlying network over which messages are transmitted?

Which two characteristics are associated with UDP sessions? (Choose two.)

Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?

How are port numbers used in the TCP/IP encapsulation process?

Which layer in the TCP/IP model is used for formatting, compressing, and encrypting data?

Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?

A client creates a packet to send to a server. The client is requesting HTTPS service. What number will be used as the destination port number in the sending packet?

Which factor determines TCP window size?

Which three protocols or standards are used at the application layer of the TCP/IP model? (Choose three.)

In what networking model would eDonkey, eMule, BitTorrent, Bitcoin, and LionShare be used?

A PC that is communicating with a web server has a TCP window size of 6,000 bytes when sending data and a packet size of 1,500 bytes. Which byte of information will the web server acknowledge after it has received three packets of data from the PC?

What information is used by TCP to reassemble and reorder received segments?

What is an advantage of SMB over FTP?​

Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?

Which three statements characterize UDP? (Choose three.)

The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose three.)

A client creates a packet to send to a server. The client is requesting SNMP service. What number will be used as the destination port number in the sending packet?

Which number or set of numbers represents a socket?

A client creates a packet to send to a server. The client is requesting SMTP service. What number will be used as the destination port number in the sending packet?

Which two types of applications are best suited for UDP? (Choose two.)

How does a networked server manage requests from multiple clients for different services?

A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?

What is an example of network communication that uses the client-server model?

Which protocol is used by a client to communicate securely with a web server?

What are three responsibilities of the transport layer? (Choose three.)

Which two protocols may devices use in the application process that sends email? (Choose two.)

What is a key characteristic of the peer-to-peer networking model?

What message type is used by an HTTP client to request data from a web server?

What do the client/server and peer-to-peer network models have in common?

Which three fields are used in a UDP segment header? (Choose three.)

When retrieving email messages, which protocol allows for easy, centralized storage and backup of emails that would be desirable for a small- to medium-sized business?

A client creates a packet to send to a server. The client is requesting telnet service. What number will be used as the destination port number in the sending packet?

A client creates a packet to send to a server. The client is requesting FTP service. What number will be used as the destination port number in the sending packet?

A client creates a packet to send to a server. The client is requesting HTTP service. What number will be used as the destination port number in the sending packet?

Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)

What is a characteristic of UDP?

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)

A client creates a packet to send to a server. The client is requesting POP3 service. What number will be used as the destination port number in the sending packet?

What is the purpose of using a source port number in a TCP communication?

Which TCP/IP model layer is closest to the end user?

An author is uploading one chapter document from a personal computer to a file server of a book publisher. What role is the personal computer assuming in this network model?

What are two roles of the transport layer in data communication on a network? (Choose two.)

Which applications or services allow hosts to act as client and server at the same time?

Which transport layer feature is used to guarantee session establishment?

What is the complete range of TCP and UDP well-known ports?

What type of information is contained in a DNS MX record?

What is an advantage of SMB over FTP?