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Question 1

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

Answer 1

The client randomly selects a source port number.

Question 2

Which transport layer feature is used to guarantee session establishment?

Answer 2

TCP 3-way handshake

Question 3

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

Answer 3

0 to 1023

Question 4

What is a socket?

Answer 4

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

Question 5

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?

Answer 5

10 segments

Question 6

Which factor determines TCP window size?

Answer 6

the amount of data the destination can process at one time

Question 7

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

Answer 7

It just sends the datagrams.

Question 8

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

Answer 8

Length
Source Port
Checksum

Question 9

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

Answer 9

identifying the proper application for each communication stream..
tracking the individual communication between applications on the source and destination hosts

Question 10

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

Answer 10

sequence numbers

Question 11

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

Answer 11

destination and source port numbers

Question 12

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

Answer 12

Destination devices receive traffic with minimal delay.
Received data is unacknowledged.

Question 13

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

Answer 13

ACK

Question 14

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

Answer 14

DNS

Question 15

What is a characteristic of UDP?

Answer 15

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

Question 16

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

Answer 16

registered port

Question 17

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

Answer 17

SMTP
FTP
HTTP

Question 18

Which three statements characterize UDP? (Choose three.)

Answer 18

UDP provides basic connectionless transport layer functions.
UDP relies on application layer protocols for error detection.
UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.

Question 19

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

Answer 19

-Window
-Sequence number

Question 20

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

Answer 20

control bits

Question 21

Why does HTTP use TCP as the transport layer protocol?

Answer 21

because HTTP requires reliable delivery

Question 22

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

Answer 22

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

Question 23

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

Answer 23

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

Question 24

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

Answer 24

when a faster delivery mechanism is needed
when applications do not need to guarantee delivery of the data

Question 25

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

Answer 25

The destination IP address is 255.255.255.255. The message comes from a client seeking an IP address.
All hosts receive the message, but only a DHCP server replies.

Question 25

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

Answer 25

meeting the reliability requirements of applications, if any
multiplexing multiple communication streams from many users or applications on the same network
identifying the applications and services on the client and server that should handle transmitted data

Question 26

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

Answer 26

SMTP
DNS

Question 27

What is true about the Server Message Block protocol?

Answer 27

Clients establish a long term connection to servers.

Question 28

What is the function of the HTTP GET message?

Answer 28

to request an HTML page from a web server

Question 29

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

Answer 29

Application

Question 30

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

Answer 30

client/server

Question 31

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

Answer 31

Both models support devices in server and client roles.

Question 32

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

Answer 32

Peer-to-peer

Question 33

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

Answer 33

Gnutella

Question 34

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

Answer 34

resource sharing without a dedicated server

Question 35

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

Answer 35

Session
Presentation
Application