GMU IT 105 Final Exam Study Guide with Complete Solutions

GMU IT 105 Final Exam Study Guide with Complete Solutions The OSI model defines four layers used by computer systems to communicate over a network - Answer️️ -False Random access files are the same as relative access files. - Answer️️ -True In computer hardware, a port is simply a connector at the end of a bus into which a device can be plugged - Answer️️ -True The operating system provides I/O support services that can be used by every program. - Answer️️ -True The wiring on the motherboard interconnects all of the peripheral cards that are plugged in to connectors, together with circuitry that steers I/O to the CPU and memory. This arrangement is known as a: - Answer️️ -Backplane A channel that carries messages in only one direction is known as a duplex channel. Page (256), simplex, half-duplex, full-duplex - Answer️️ -False A full-duplex channel may carry messages in both directions, but only one direction at a time. - Answer️️ -False An Intranet is an organizational network, where the user interfaces and applications are based primarily on Web services. - Answer️️ -True Ethernet is called the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol. - Answer️️ -True ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM Page | 2 Ports are used in the Transport layer to identify the application that is to receive the message. - Answer️️ -True There must be a way to break long messages into smaller units. These units are called segments - Answer️️ -False The use of packets simplifies operations and increases communication efficiency. - Answer️️ -True Packet switching is also called datagram switching. - Answer️️ -True Multimedia applications require relatively few MIPS (Million Instructions Per Second). - Answer️️ -False Client-server computing typically provides easier administration of services. - Answer️️ -True A Cluster typically provides high availability and fault tolerance. - Answer️️ -True Which of the following multiplexing techniques is normally used with digital signals - Answer️️ -. Time division multiplexing (TDM Which of the following computers are mounted on a board similar to a motherboard that can be plugged into connectors on a rack? - Answer️️ -Blade Servers Which of the following is FALSE regarding fiber-optic cabling - Answer️️ -It is vulnerable to most forms of noise. Abbreviated Hz, is the unit used to measure what? - Answer️️ -Frequency The USB protocol allows packets to be scheduled for delivery at regular time intervals. This technique is known as what? - Answer️️ -Isochronous data tran