Computer Networks Chapter 8 Exam Questions and Answers Graded A+

Computer Networks Chapter 8 Exam Questions and Answers Graded A+ Node - Answers Every device connected to a network Computer Network - Answers Two or more computers connected to each other to share resources Computer networks have a higher __________ than computers not in a network - Answers Start up cost Economic advantages for networks - Answers - No need to buy several peripheral devices Advantages of software for networks: - Answers You only install the software in the server If you want to update it, you only update it on the server Advantages for backup for networks: - Answers Server automatically knows what to back up Advantages for Internet for networks - Answers Share ONE internet connection throug the server Network Interface Controller (NIC) - Answers - Piece of hardware that allows computer to connect to network - On the motherboards Protocol - Answers - TCP/IP controls how data and information is shared between computers - "standard language" - Rules Ethernet Cables - Answers specialized wires with adapters that plug into the NIC The most common type of Ethernet cables is - Answers Twisted Pairs Can Ethernet cables be replaced by wireless connections? - Answers Yes Hub - Answers The central location of the network that serves to run the network smoothly Clients - Answers Computers connected to the network Network Protocols provide a ___________ for communication between computers - Answers common language The most common network protocol is... - Answers TCP/IP TCP/IP break files down into ________ - Answers Packets TCP/IP will NOT accept anything if it can NOT______ - Answers Put ALL packets together User Datagram Packets (UDP) - Answers Break large files into packets, but unlike TCP/IP, allows packet to work even if its missing some files What type of protocol does Youtube use? Why? - Answers UDP, it doesn't matter if you loose a frame What type of protocol would you need for an spreadsheet? Why? - Answers TCP/IP, every information is important Network Operating System (NOS) - Answers Software that controls an entire network What does NOS do? - Answers o Automatic hardware detection. NOS recognizes when it becomes part of a network o Supports multiprocessing which allows several processers to occur at one time o Recognizes who is using the network o Provides security Network Administrator - Answers Person who is responsible for smooth network operation, network operation and implementation of new modes and users A Network Administrator must have a _______________ - Answers Strong understanding of business Topology - Answers Refers to a mapping of a physical network and logical interconnection between nodes. The way the network is arranged Bus Topology - Answers The network is connected to a linear backbone with two endpoints Disadvantage of Bus topology - Answers If the backbone fails, the network fails Advantage of Bus topology - Answers All nodes get the information simultaneously Star Topology - Answers One central network (hub) that connects in a star like fashion What is the most common type of topology? - Answers Start Topology What is the most expensive type of topology? - Answers Star Topology Disadvantage of star topology? - Answers If the hub fails, the network fails Ring Topology - Answers Each node is connected to two other computers in the network. Data is transmitted between computers in a circular manner. Least used type of topology with microcomputers... - Answers Ring Topology Advantages of ring Topology - Answers Allows data to go two directions Local Area Network (LAN) - Answers A small network confined by a single building. (often used in small business or small parts of large business (accounting)) Campus Area Network (CAN) - Answers Connects two or more LANs Located on universities or large business (Connects MAYS LAN to Liberal Arts LAN) Metropolitan Area Network (MAN) - Answers Connects LANs and CANs to a larger network like a city Wide Area Networks (WAN) - Answers Connects LANs, CANs and MANs and can cover an entire country Peer-to-Peer Network (P2P) - Answers Connect 2 computers to each other Whats the world's largest network? - Answers The Internet is the world's largest network and connects thousands of other networks together including LANs, CANs, MANs, and WANs. The internet - Answers The interconnection of public, private, commercial, industrial, and governmental networks Network security starts with a solid understanding of ________ - Answers Threats Password - Answers A secret word typed by user to authenticate their identity and gain access Strong Password - Answers Upper case, lower case, numbers and special characters Problems with strong passwords - Answers YOu might want to write it down somewhere Passphrase - Answers Same as strong password, but a phrase that is memorable What is the most common way viruses get into networks? - Answers Employees Employees web browsing should be - Answers Monitored Email Usage - Answers All emails are saved so therefore policies should be in place regarding appropriate usage. Permissions - Answers grants and denies access to a network depending on the user Firewall - Answers Hardware and software on a proxy server that determines who is allowed on a network and who is not Intranet - Answers like a private version of the Internet that works the same way, but it is