Business Data Communications Midterm All Answers Correct

Business Data Communications Midterm All Answers Correct OSI Model ️Physical, Data link, Network, Transport, Session, Presentation, Application Internet Model ️Physical, Data link, Network, Transport, Application Sender ️Data link, Network, Transport, Application Receiver ️Frame, Packet, Segment, Data Application Architecture ️Presentation, Application, data access, Data Storage Host-Based Architecture ️Server contains all components (server based) Client-based Architecutre ️Client contains presentation, application, and data access logic Client Server Architecutre ️Most common architecture today Client and Server has Application Layer Client Side Architecture ️Thin clients are easier to manage, thick clients have more functionality Thick Client Architecture ️Application Logic on Client Thin Client Architecture ️Application Logic in Server Peer to Peer Architecture ️All devices can act as client and server Simple Mail Transfer Protocol (SMTP) ️Protocol used to send a message to a mail server Internet Message Access Protocol (IMAP) or Post Office Protocol (POP) ️Protocols used by a client to retrieve messages from a mail server POP3 ️Client/server protocol in which e-mail is received and held for you by your Internet server. IMAP ️Allows you to access your email wherever you are, from any device Point-to-Point ️When computers generate enough data to fill the capacity of the circuit Multipoint ️Only one computer can use the circuit at a time. Cheaper and most commonly used in wireless today Simplex ️Data flows in one direction Ex. Garage door opener, baby monitor Half-Duplex ️Data flows both directions Ex. Walkie talkie Full-Duplex ️Data flows simultaneously in both directions Media ️Physical matter used to carry voice or data transmissions Guided media ️Transmission flows along physical medium Wireless (radiated) media ️transmission flows through the air White Noise ️What causes it: Movement of electrons