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ITT Tech Tucson NT 1210 Chapter 10 1)Which of the following answers lists a need of transport layer protocols that can be met by the TCP/IP network layer protocols? a

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ITT Tech Tucson

NT 1210

Chapter 10

1)Which of the following answers lists a need of transport layer protocols that can be met by the TCP/IP network layer protocols? a. A delivery service that recovers and resends lost data b. Segmenting data into smaller chunks of a size that can be sent through the TCP/IP network c. Delivering data to the correct destination application process on the destination host d. Delivering data to the correct destination host e. Providing communications functions to application software

2.            Which of the following answers list a need of application layer protocols that can be met by the TCP/IP transport layer protocols? (Choose three answers.) a. A delivery service that recovers and resends lost data b. Segmenting data into smaller chunks of a size that can be sent through the TCP/IP network c. Delivering data to the correct destination application process on the destination host d. Delivering data to the correct destination host e. Providing communications functions to application software

 

3.            Which of the following answers lists a service provided by an application layer protocol to the application?   a. The ability to identify the correct destination application process on the other end of an application flow b. The ability to communicate using a TCP/IP network c. Encoding data over a cable d. Encapsulating data between a header and trailer

4.            A user opens email client software on her tablet computer after connecting to the Internet. The user successfully downloads her latest email. Another student happens by and starts spouting off about how the first student has been using email, POP3, IP, TCP, HTTP, 802.11, and other acronyms all just to check email. The first student just stares at this second student, but it does cause the first student to wonder: Which of the following answers accurately describes where some of these features are implemented on the tablet? a. POP3 in the email application software

b. HTTP in the email application software c. TCP in the email application software d. UDP in the OS

5.            A user of a tablet computer goes to a coffee shop and connects to the Internet through a wireless LAN. The user then connects to a web server somewhere far away in the Internet. Which of the following statements are true about the messages that flow from the tablet’s web browser toward the web server? (Choose two answers.) a. The 802.11 frame sent by the tablet arrives at the web server. b. The IP packet sent by the tablet arrives at the web server. c. The TCP segment sent by the tablet arrives at the web server. d. The UDP segment sent by the tablet arrives at the web server.

6.            Which of the following answers accurately describe the size of the TCP, UDP, and IP headers, assuming that the headers include no additional optional fields? (Choose three answers.) a. IP:

20 b. TCP: 8 c. UDP: 8 d. TCP: 20 e. UDP: 12

7.            When thinking about the messages that flow inside a TCP/IP network, you can think about the header for a particular layer and its encapsulated data, ignoring any lower-layer headers and trailers. Which of the following answers list a protocol with the correct matching term for the name of the message that includes that protocol’s header plus its encapsulated data? (Choose two

 

answers.) a. UDP: Packet b. TCP: Connection c. UDP: Datagram d. TCP: Segment e. UDP: Flow

8.            An application running on a user’s device is currently sending data to/from an application on some server inside an enterprise TCP/IP network. According to this chapter, which of the following terms are the most common terms that refer to the idea of these two application processes communicating with each other? (Choose two answers.) a. Connection b. Pipe c. Circuit  d. Flow

9.            Which of the following answers describes a commitment that both TCP and UDP make to the application protocols that use them? a. Delivering data to the correct destination host b. Delivering data in the same order in which it was sent c. Delivering data to the correct destination application process d. Segmenting large data into sizes that flow over the network

10.          Which of the following answers lists a transport protocol with the correct size, in bits, of that protocol’s destination port field in its header? a. UDP: 8 b. TCP: 12 c. UDP: 16            d. TCP: 32 Answer: C. Both the TCP and UDP headers begin with a source and destination port field. Each field is consistently 2 bytes (16 bits) long.

11.          A user of a tablet computer has three browser tabs open, with those tabs currently using TCP port numbers 55555, 55556, and 55557. The user opens another browser tab. Which of the following port numbers could the browser use? a. 55555 b. 55558 c. 80 d. 77777

Also, port numbers can be as high as 65535, but no higher, so 77777 would not work either.

12.          A user of a tablet computer has three browser tabs open, with those tabs currently using TCP port numbers 55555, 55556, and 55557. The user opens an application that uses UDP. Which of the following port numbers could the new application use? (Choose two answers.) a. 55555 b. 55558 c. 80 d. 77777

13.          The user of host A opens a web browser and successfully loads a web page hosted on web server B. Host A’s browser uses TCP port 55555, and web server B uses the well-known HTTP port for web servers. In the messages that contain the contents of the web page that appeared in the web browser’s window, which of the following answers is true? a. The source port = 80. b.

 

The source port = 55555. c. The destination port = 80. d. The question gives too little information to determine whether the other answers are correct.

14.          The user of host A opens a web browser and successfully loads a web page hosted on web server B. Host A’s browser uses TCP port 55555, and web server B uses the well-known HTTP port for web servers. Which of the following terms refers to the category or type of port number used by the web browser (55555 in this case)? a. Plain old port b. Registered port c. Simple port d. Dynamic port

15.          Which of the following answers lists the correct transport protocol and well-known port number used by each application protocol listed? a. DNS–UDP: 53 b. HTTP–UDP: 80 c. Telnet–TCP: 110 d. POP3–UDP: 53

16.          Which of the following statements are true regarding MTU? (Choose two answers.) a. Defines the maximum size of an IP packet that can flow from host to host over the entire IP route. b. The MTU value describes the size of the entire IP packet. c. Defines the maximum size of an IP packet that can be sent out a particular interface. d. The value describes the size of the entire IP packet’s data field.

17.          Which of the following statements are true regarding MSS? (Choose two answers.) a. Defines the maximum size of a TCP segment that can flow from host to host over the entire IP route. b. The MSS value describes the size of the entire TCP segment. c. Defines the maximum size of a TCP segment that can be sent out the interface on the source host. d. The value describes the size of the entire TCP segment’s data field.

18.          A web server hosts a web page. Part of that web page includes a graphics image, in a file named fred.jpg, that shows a photo of Fred. The file size is 300 KB. The web server’s Ethernet interface has an IP MTU of 1500. Which of the following answers is true about the process that moves the contents of fred.jpg from the web server to the web browser? a. HTTP on the web server breaks the data mostly into 1500-byte chunks. b. TCP on the web server breaks the data mostly into 1480-byte chunks. c. IP on the web server breaks the data into mostly 1480-byte chunks. d. TCP on the web server breaks the data into mostly 1460-byte chunks.

 

19.          Which of the following answers best describes how TCP guarantees delivery of data over a TCP connection? a. By sending two copies of every TCP segment b. By sending a TCP checksum that allows the receiving host to correct any errors that occur during transmission c. By noticing when data is lost and then resending the lost TCP segments d. By routing packets over links that have the fewest number of errors

20.          Which of the following answers list a feature that TCP offers but that UDP does not? (Choose two answers.) a. In-order delivery of data b. Identifying servers using well-known ports c. Delivering data to the correct application processes d. Error recovery