L7- Building Telecommunication System (Part 1) Flashcards
_________ are the means of electronic transmission of information over distances.
Telecommunications
The information may be in the form of voice telephone calls, data, text, images, or video. Today, telecommunications are used to organize more or less remote computer systems into ____________. These networks themselves are run by computers.
telecommunications networks
It is an arrangement of computing and telecommunications resources for communication of information between distant locations.
telecommunications network
A telecommunications includes the following components:
1. __________for accessing the network
2. _______________ that process information and are interconnected by the
network
3. __________________ that form a channel through which
information is transmitted from a sending device to a receiving device.
4. ___________________that facilitates the transmission
of information.
5. ___________________that controls message
transmission over the network.
- Terminals
- Computers
- Telecommunications links
- Telecommunications equipment
- Telecommunications software
The two principal types of telecommunications networks that can be distinguished from the point of view of their geographical scope.
- Local area networks (LAN)
- Wide area networks (WAN)
It is a privately owned network that interconnects processors, usually microcomputers, within a building
or on a campus site that includes several buildings.
Local area networks (LAN)
TRUE OR FALSE:
LANs are the principal tool of workgroup computing
True
TRUE OR FALSE:
LANs ensure high-speed communication within a limited area and enables the users to share facilities (peripherals) connected to it.
True
TRUE OR FALSE:
WANs usually include a large-capacity, secondary storage device, where database and applications software are maintained, managed by a microcomputer acting as a file server that delivers data or program files to other computers.
False - LANs
TRUE OR FALSE:
Facilities (peripherals) in a LAN may include jukebox optical memory and fast printers
True
TRUE OR FALSE:
Frequently, one of the facilities (peripherals) in a LAN is the gateway hardware and software that give the network users access to other networks.
True
TRUE OR FALSE:
Less group members may connect to the network from remote sites using wireless telecommunications in a LAN.
False - More group members
TRUE OR FALSE:
Links and equipment of LANs are owned by the user company, and these networks are generally much faster than WANs.
True
It is a telecommunications network that covers a large geographical area.
Wide area network (WAN)
TRUE OR FALSE:
The information system of an entire organization may be structured as a hierarchy. The WANs system architecture looks very much like an organization chart.
True
TRUE OR FALSE:
LANs connect all the divisional minicomputers to the headquarters mainframe with a variety of local microcomputers and terminals located at remote sites connected, in turn, to the minicomputer.
False- WANs
TRUE OR FALSE:
WANs provide the backbone through which all other nodes (computers and terminals) communicate.
True
TRUE OR FALSE:
MANs provide the backbone through which all other nodes (computers and terminals) communicate.
False- WANs
TRUE OR FALSE:
WANs serve to interconnect multiple LANs and can make specific resources available to a large number of workstations.
True
These are telecommunications networks that interconnect various local area networks within a metropolitan area, that is, within approximately a 50-mile range.
Metropolitan Area Networks (MAN)
What are the characteristics of MANs?
a. Purpose of MANs is to interconnect various LANs within a metropolitan area, that is, within approximately a 50 - mile range.
b. Generally, the speed of MANs is equal to that of LANs and they use similar technology.
What are the Characteristics of Interorganizational Information Systems?
a. These systems help several firms share information in order to coordinate their work, collaborate on common projects, or sell and buy products and services.
b. Internet has emerged as a global public network of networks
c. Some interorganizational systems are employed in knowledge work
d. Can be used to connect a firm’s computers to the information systems of its customers, suppliers, and business partners, and are also used to execute business transactions.
This may be implemented with various
communication media, with a corresponding
variety of characteristics
Telecommunications Links
The main feature of a medium is its potential transmission speed, also known as ___________, which for data transmission purposes is expressed in bits per second (bps).
channel capacity
