cHAP12TO14

Question 1: Which of the following would describe Transmission Control Protocol?
A. unreliable
. connection-oriented
C. connectionless
D. Layer 3

Question 2: Since TCP reassembles segments into complete messages, what happens if a sequence number is missing in the series?
A. The segment is dropped.
. The missing segment is re-transmitted.
C. All segments are retransmitted from the beginning.
D. Sequence numbers are never checked when using TCP.

Question 3: At which OSI layer does TCP operate?
. Layer 4
B. Layer 5
C. Layer 6
D. Layer 7

Question 4: What is the correct term for the orderly initiation, termination, and managing of communication?
. dialogue separation
B. dialogue control
C. segmentation
D. expectational acknowledgement

Question 5: What type of communication is used when two messages can cross during a conversation?
. two-way simultaneous
B. two-way continuous
C. two-way alternate
D. one-way alternate

Question 6: Which simple protocol exchanges datagrams, without acknowledgements or guaranteed delivery?
A. TCP
B. ASP
C. TCP/IP
. UDP

Question 7: What file format acts as a set of directions that tell a web browser how to display and manage documents?
. HTML
B. HTTP
C. MIDI
D. JPEG

Question 8: Which of the following would be an example of an important Layer 5 protocol?
A. OSPF
. NFS
C. IGRP
D. FTP

Question 9: What is it called when the session layer decides whether to use two-way simultaneous or two-way alternate communication?
A. expectational acknowledgement
B. dialogue separation
C. resynchronization
. dialogue control

Question 10: Which layer of the OSI model is responsible for presenting data in a form that the receiving device can understand?
A. transport
B. session
. presentation
D. application

Question 11: Which of the following is a main function of the presentation layer?
A. dialogue control
B. managing applications
C. windowing
. data compression

Question 12: If one system uses EBCDIC and a second system uses ASCII, which layer provides the translation between the two different types of code?
. Layer 6
B. Layer 5
C. Layer 4
D. Layer 3

Question 13: Which layer of the OSI model is responsible for the compression of files?
A. transport
B. session
. presentation
D. application

Question 14: Which term refers to the amount of data that can be transmitted before receiving an acknowledgement?
. window size
B. closed connection
C. two way handshake
D. expectational acknowledgement

Question 15: The session layer establishes, manages, and terminates sessions between
A. networks
B. servers
. applications
D. media

Question 16: What is the term used when sound files are downloaded while they are playing?
A. Musical Instrument Digital Interface
B. EBCDIC
C. video streaming
. streaming audio

Question 17: What type of communication avoids interrupts by taking turns?
A. two-way simultaneous
B. two-way symmetric
. two-way alternate
D. one-way continuous

Question 18: Which layer is responsible for data encryption?
A. Layer 7
. Layer 6
C. Layer 5
D. Layer 4

Question 19: What is ASCII and EBCDIC used to format?
A. graphics
. text
C. digitized music
D. video

Question 20: Which of the following is a characteristic of TCP?
A. unreliable
B. connectionless
. divides outgoing messages into segments
D. provides no software checking for segments

Question 21: What is the correct term for the sequence that synchronizes a connection at both ends before any user data is exchanged?
A. closed connection
B. segment retransmission
. three-way handshake
D. sliding windows

Question 22: What are two file formats used by the Internet applications to display still images?
A. WAV and HTML
B. PICT and MIDI
. GIF and JPEG
D. MPEG and TIFF

Question 23: Which layer of the OSI model has the primary duty of regulating the flow of information from source to destination reliably and accurately?
A. presentation
B. session
. transport
D. network

Question 24: In a TCP segment, which field defines the number of octets a recipient is willing to accept?
A. flag
B. checksum
. window
D. HLEN

Question 25: Which ports are reserved by TCP ond UDP for public applications?
A. numbers from 255to 1028
. numbers below 255
C. numbers above 1023
D. numbers from 0 to 1023