- Users may need to remember multiple passwords.
- Files can be duplicated and changes overwritten between the computers with the shared folder and the Server.
- Files saved on the workstation are not backed up.
Sunday, 30 June 2013
Disadvantages of Hybrid Network - peak concepts
Advantages of Hybrid Network - peak concepts
- Client Server application are still centrally located and managed.
- Users can assign local access to resources in their computers.
- Workgroups can manage resources without requiring assistance from network administrator.
What is Hybrid networks - peak concepts
- Hybrid networks are the networks that are based on both peer-to-peer & client-server relationship.
- Hybrid networks incorporate the best features of workgroups in peer-to-peer networks with the performance, security and reliability of server-based networks.
- Hybrid networks still provide all of the centralized services of servers, but they also allow users to share and manage their own resources within the workgroup.
What is packet - peak concepts
Disadvantages of Peer to Peer Networks - peak concepts
1.
In peer-to-peer network, the absence of centralized server make it
difficult to backup data as data is located on different workstations.
2. Security is weak as each system manages itself only.
3. There is no central point of data storage for file archiving.
Advantages of Peer to Peer Networks - peak concepts
1. Such networks are easy to set up and maintain as each computer manages itself.
2. It eliminates extra cost required in setting up the server.
3. Since each device is master of its own, they an: not dependent on other computers for their operations.
2. It eliminates extra cost required in setting up the server.
3. Since each device is master of its own, they an: not dependent on other computers for their operations.
What is Peer-to-Peer Networks - peak concepts
- In the peer to peer computer network model we simply use the same Workgroup for all the computers and a unique name for each computer in a computer network.
- There is no master or controller or central server in this computer network and computers join hands to share files, printers and Internet access.
- It is practical for workgroups of a dozen or less computers making it common environments, where each PC acts as an independent workstation and maintaining its own security that stores data on its own disk but which can share it with all other PCs on the network.
- Software for peer-to-peer network is included with most modern desktop operating systems such as Windows and Mac OS.
- Peer to peer relationship is suitable for small networks having less than 10 computers on a single LAN.
What is Internet - peak concepts
What is Intranet - peak concepts
Intranet : An intranet is a set of interconnected networks or Internetworking, using the Internet Protocol and uses IP-based tools such as web browsers and ftp tools, that is under the control of a single administrative entity.
That administrative entity closes the intranet to the rest of the
world, and allows only specific users. Most commonly, an intranet is the
internal network of a company or other enterprise. A large intranet
will typically have its own web server to provide users with browseable information.
What is Extranet - peak concepts
What is Internetworking - peak concepts
What is Transaction server - peak concepts
What is Database server - peak concepts
What is file server - peak concepts
computer network files or file records over a computer network to the file server.
This form of computer network data service requires large bandwidth and can slow a computer network with many users down considerably. Traditional LAN (Local area Network) computing allows users to share resources, such as data files and peripheral devices, by moving them from standalone PCUs onto a Networked File Server (NFS).
What is modem - peak concepts
Modulator converts information from digital mode to analog mode at the transmitting end and demodulator converts the same from analog to digital at receiving end.
The process of converting analog signals of one computer network into
digital signals of another computer network so they can be processed by a
receiving computer is referred to as digitizing.
What is Switching - peak concepts
For
example: - whenever a telephone called is placed, there are numerous
junctions in the communication path that perform this movement of data
from one network onto another network.
What are Network Services - peak concepts
1. Network services are the thing that a network can do. The major networking services are
2. File Services: This includes file transfer, storage, data migration, file update, synchronization and achieving.
3. Printing Services: This service produces shared access to valuable printing devices.
4. Message Services: This service facilitates email, voice mails and coordinate object oriented applications.
5. Application Services: This services allows to centralize high profile applications to increase performance and scalability
6. Database Services: This involves coordination of distributed data and replication.
Advantages of Network - peak concepts
The following are the distinct notes in favor of computer network.
1. The computers, staff and information can be well managed
2. A network provides the means to exchange data among the computers and to make programs and data available to people
3. It permits the sharing of the resources of the machine
4. Networking also provides the function of back-up.
5.
Networking provides a flexible networking environment. Employees can
work at home by using through networks ties through networks into the
computer at office.
What is a computer network - peak concepts
A computer
network consists of two or more computers that are linked in order to
share resources such as printers and CD-ROMs, exchange files, or allow
electronic communications. The computers on a computer network may be
linked through cables, telephone lines, radio waves, satellites, or
infrared light beams.
Computer network can be classified on the basis of following features :
By Scale:Computer networks may be classified according to the scale :
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)
Computer network can be classified on the basis of following features :
By Scale:Computer networks may be classified according to the scale :
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)
By Connection Method: Computer
networks can also be classified according to the hardware technology
that is used to connect the individual devices in the network such as Optical fibre, Ethernet, Wireless LAN.
By Functional Relationship (Network Architectures) : Computer
networks may be classified according to the functional relationships
which exist between the elements of the network. This classification
also called computer architecture. There are two type of network
architecture :
- Client-Server
- Peer-to-Peer Architecture
Saturday, 29 June 2013
What is a Bank ? Introduction, Definition and Features of Bank
Fiance is the life blood of trade, commerce and industry. Now-a-days,
banking sector acts as the backbone of modern business. Development of
any country mainly depends upon the banking system.
The term bank is either derived from old Italian word banca or from a French word banque both mean a Bench or money exchange table. In olden days, European money lenders or money changers used to display (show) coins of different countries in big heaps (quantity) on benches or tables for the purpose of lending or exchanging.
Image Credits © Tardiskey
The term bank is either derived from old Italian word banca or from a French word banque both mean a Bench or money exchange table. In olden days, European money lenders or money changers used to display (show) coins of different countries in big heaps (quantity) on benches or tables for the purpose of lending or exchanging.
Characteristics / Features of a Bank
Dealing in Money
Individual / Firm / Company
Acceptance of Deposit
Giving Advances
Payment and Withdrawal
Agency and Utility Services
Profit and Service Orientation
Ever increasing Functions
Connecting Link
Banking Business
