COSC 354 - Networks Chapter 7 Exam Questions and Answers Already Passed Latest Update

COSC 354 - Networks Chapter 7 Exam Questions and Answers Already Passed Latest Update What is a Local Area Network (LAN)? - Answers is a communication network that interconnects a variety of data communicating devices within a small geographic area and broadcast data at high data transfer rates. First appeared in 1970s. What are the primary function of LANs? - Answers To provide resources to perform one or more of the following: Access to the internet File Serving Print Serving Database and Application Serving Email Serving, etc. Advantages of LANs? - Answers 1. Ability to share hardware and software resources 2. Individual workstation might survive network failure. 3. Component and system evolution are possible. 4. Secure transfers at high speeds with low error rates. Disadvantages of LANs? - Answers 1. Equipment and support can be costly. 2. Level of maintenance continues to grow. 3. LAN is only as strong as its weakest link, and there are many links. What was the first LAN topology? - Answers The Bus/Tree which has a workstation that has a NIC that attaches to the bus (coaxial cable) via a tap. Characteristics of the Bus/Tree - Answers Baseband signals are bidirectional and more outward in both direction from workstation transmitting. Broadband are usually uni-directional and transmit only one direction. Bus can be split and joined, creating trees. A more modern LAN topology is the? - Answers The Star-Wired Bus: logically operates as a bus, but physically looks like a star. Characteristics of the Star-Wired Bus? - Answers Star design is based on hub, all workstation attach to hub. Originally hub takes signal and immediately broadcast it out all connected links.