Question 4: Which of the following would describe Transmission Control Protocol?
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1 Test Question 1: 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 C. transport D. network Question 2: Which of the following is a characteristic of TCP? A. unreliable B. connectionless C. divides outgoing messages into segments D. provides no software checking for segments Question 3: At which OSI layer does TCP operate? A. Layer 4 B. Layer 5 C. Layer 6 D. Layer 7 Question 4: Which of the following would describe Transmission Control Protocol? A. unreliable B. connection-oriented C. connectionless D. Layer 3 Question 5: What type of communication is used when two messages can cross during a conversation? A. two-way simultaneous B. two-way continuous C. two-way alternate D. one-way alternate Question 6: In a TCP segment, which field defines the number of octets a recipient is willing to accept? A. flag B. checksum
2 C. window D. HLEN Question 7: Which simple protocol exchanges datagrams, without acknowledgements or guaranteed delivery? A. TCP B. ASP C. TCP/IP D. UDP Question 8: Which layer of the OSI model is responsible for the compression of files? A. transport C. presentation D. application Question 9: Which ports are reserved by TCP and UDP for public applications? A. numbers from 255 to 1023 B. numbers below 255 C. numbers above 1023 D. numbers from 0 to 1023 Question 10: 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 C. three-way handshake D. sliding windows Question 11: What type of communication avoids interrupts by taking turns? A. two-way simultaneous B. two-way symmetric C. two-way alternate D. one-way continuous Question 12: Which term refers to the amount of data that can be transmitted before receiving an acknowledgement?
3 A. window size B. closed connection C. two way handshake D. expectational acknowledgement Question 13: The session layer establishes, manages, and terminates sessions between. A. networks B. servers C. applications D. media Question 14: 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 D. dialogue control Question 15: Which of the following would be an example of an important Layer 5 protocol? A. OSPF B. NFS C. IGRP D. FTP Question 16: Which layer of the OSI model is responsible for presenting data in a form that the receiving device can understand? A. transport C. presentation D. application Question 17: Which of the following is a main function of the presentation layer? A. dialogue control B. managing applications C. windowing D. data compression Question 18: What is the correct term for the orderly initiation, termination, and managing of communication?
4 A. dialogue separation B. dialogue control C. segmentation D. expectational acknowledgement Question 19: If one system uses EBCDIC and a second system uses ASCII, which layer provides the translation between the two different types of code? A. Layer 6 B. Layer 5 C. Layer 4 D. Layer 3 Question 20: What is ASCII and EBCDIC used to format? A. graphics B. text C. digitized music D. video Question 21: What are two file formats used by the Internet applications to display still images? A. WAV and HTML B. PICT and MIDI C. GIF and JPEG D. MPEG and TIFF Question 22: What is the term used when sound files are downloaded while they are playing? A. Musical Instrument Digital Interface B. EBCDIC C. video streaming D. streaming audio Question 23: Since TCP reassembles segments into complete messages, what happens if a sequence number is missing in the series? A. The segment is dropped. B. The missing segment is re-transmitted. C. All segments are retransmitted from the beginning. D. Sequence numbers are never checked when using TCP. Question 24:
5 What file format acts as a set of directions that tell a web browser how to display and manage documents? A. HTML B. HTTP C. MIDI D. JPEG Question 25: Which layer is responsible for data encryption? A. Layer 7 B. Layer 6 C. Layer 5 D. Layer 4
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