A common phrase among IT professionals is "The world views its data through Windows."

A common phrase among IT professionals is "The world views its data through Windows." Why does Microsoft dominate the desktop and networked software market?

Is the Nyquist theorem true for optical fiber or only for copper wire? How many end office codes were there pre-1984, when each end office was named by its three-digit area code and the first three digits of the local number? Area codes started with a digit in the range 2-9, had a 0 or 1 as the second digit, and ended with any digit. The first two digits of a local number were always in the range 2-9. The third digit could be any digit. What is the percent overhead on a T1 carrier; that is what percent of the 1.544 Mbps are not delivered to the end user? What is the difference between message switching network and packet switching? Sometimes when a mobile user crosses the boundary from one cell to another the current call is abruptly terminated even though all transmitters and receivers are functioning perfectly Why? A CDMA receiver gets the following chips: (+1 +1 +1 +1 +3 -1 -1 +3). Assuming the chip sequences for four stations as defined below, which stations transmitted, and which bit did each one send?

Please see the attached file. Is the Nyquist theorem true for optical fiber or only for copper wire? How many end office codes were there pre-1984, when each end office was named by its three-digit area code and the first three digits of the local number? Area codes started with a digit in the range 2-9, had a 0 or 1 as th ...continues

6 questions inclduing character encoding, data streams, flags and parity.

Please see attached file. The following character encoding is used in a data link protocol: A: 01000111; B: 11100011; FLAG: 01111110; ESC: 11100000 Show the bit sequence transmitted (in binary) for the four-character frame: A B ESC FLAG when each of the following framing method is used: (a) Character count. (b) Fla ...continues

Scenarios detrmining which to use = Ethernet or Token Ring

Consider the following scenarios: 1. Saguaro Federal has mainframes for all of its banks and businesses. Should the company use the Ethernet or Token Ring protocol? Explain your choice. Why is this choice appropriate? 2. XYZ Technology Consultants has offices on the second, third, and fourth floors of the office building it oc ...continues

A local area network operates at 180 megabits per second. How long would it take (in seconds) to transmit a file of 50000K bytes across such a network? State any assumptions or limitations.

A local area network operates at 180 megabits per second. How long would it take (in seconds) to transmit a file of 50000K bytes across such a network? State any assumptions or limitations.

Network Topology notes 2 pages

Outline the three general network topologies (bus, ring, and star). Describe the components, devices, and arrangement of components and devices involved in each topology, as well as some of the pros and cons of each configuration.

Need of having multiple states instead of two (networking)

What is desirable about having multiple possible states instead of just two? (how does it help networking?)

Different types of wireless technologies

?Discuss four different types of wireless technologies ?Describe the characteristics and properties of each signal type, and how each can be used. ?Include a table or matrix that compares properties of the four signal types. ?Provide a hypothetical situation for each signal type that illustrates how it could be, or is being, ...continues

Networking Analysis

Connect update from 3 computers to 5 computers at eight different sites. What hardware and software will I need?

Networking

Describe the development of network architectures and its subsequent consolidation over the past 20 years. Include topologies and the TCP/IP, Internetwork Packet Exchange/Sequence Packet Exchange (IPX/SPX), Network Basic Input Output System (NetBIOS), and NetBIOS Extended User Interface (NetBEUI) architectures.