It defines the procedure of providing security on network and network resources. It contains handling the security services on a resource by using access control, authentication, confidentiality, integrity, and non-repudiation. Computer network security includes measures taken by a business or various systems to monitor and avoid unauthorized access from external attackers.Network security is the security designed to preserve the integrity of the network from unauthorized connection and threats. The network administrators are responsible for adopting various defensive measures to guard their networks from possible security risks.Computer networks are connected in daily transactions and connections inside the government, private, or corporate ... Read More

ADC represents the Application delivery controller. It handles and directs the data flow among client connections and Web or enterprise software and can be used in the design of hardware devices or application programs.ADCs are generally related to application delivery networks (AND) where their goal is to implement simple tasks like what Web sites generally do to lessen the load from the Web servers.ADCs can also be discovered between a firewall and various software servers in a Web farm within a demilitarized zone (DMZ).The application delivery controller finds the crucial position of the cloud computing network. In addition to the ... Read More

Let us understand what Frequency-Division Multiplexing (FDMA) is.FDMAFrequency-Division Multiplexing is an analog method used when the channel’s bandwidth is higher than the consolidated bandwidths of the signals to be broadcasted.In FDMA, there are several frequencies that are combined into an individual combined signal and shared on the channel. At the receiver end, the reverse procedure is used to receive the single frequencies back for operating.The entire bandwidth of the channel is divided into logical channels, and each sending device is given with the possession of a logical channel.When the signal appears at the receiver in the composite architecture, it has ... Read More

There are various physical components of a computer network which are as follows −NICNIC represents Network Interface Cards. A personal computer development board linked to a PC or server and works with the network control structure to force the network’s data stream. There are many network documentations that call NIC a network board. In this manner, all NICs are connected to a network.HubA hub is a standard network point, also referred to as a network hub, to connect devices in a network. The hub has numerous ports. If a packet develops one port, it can be considered by all the ... Read More

Computer Network is a linkage of several computers to share an operating framework, hardware, and data through a transmission approach between them.Elements of Computer NetworkA computer network involves the following elements such as follows −Nodes (Workstations) − The multiple terminals connected to the network sharing the network resources are known as nodes.Server − It can assign a specific node as a central node at a well-known and permanent address to support the network. The node supporting the service is called server.Network Interface Unit − The interpreter which facilitates connecting the server and multiple nodes, is known as the Network Interface Unit. The network interface ... Read More

Let us begin with the concept of Simple Network Management Protocol (SNMP).SNMPSNMP represents Simple Network Management Protocol. It is an Internet-standard protocol for handling machines on IP networks. The devices that generally support SNMP contain routers, switches, servers, workstations, printers, modem racks, etc.It is generally used in the network management structure to monitor network-connected computers for conditions needing regulatory attention. It is a framework for handling devices on the web using the TCP-IP protocol suite. It provides a collection of basic operations for monitoring and supporting the Internet.SNMP supports the concept of manager and agent. A manager is frequently a ... Read More

HDLC is a bit-oriented synchronous data link layer protocol that can provide the error-free transmission of data to specific destinations and control the speed at which information is sent. It supports both connection-oriented and connectionless services. It is a set of protocols that represents rules for sending data between network points. Data in HDLC is arranged into units known as frames and is transmitted across networks to specified destinations.HDLC frames are sent over synchronous links or asynchronous links, which do not indicate the beginning and end of frames. This is completed using a frame delimiter or flag, which includes a ... Read More

Let us understand what Time Division Multiple Access (TDMA) is.TDMATDMA represents Time Division Multiple Access. It is a cellular mobile technology that depends on time-division multiplexing (TDM) techniques. In TDM, each sender is provided the whole possession of the whole bandwidth of the medium for a constant duration of time. After this, the control is transferred to the next sender, and the process carries on a round-robin basis.An example of TDM is the television broadcast. In a television serial, generally, a 10 minutes serial is followed by a 5 minutes advertisement. The time in which the serial is being broadcasted; ... Read More

HDLC is a bit-oriented protocol. It was generated by the International Organization for Standardization (ISO). It can decrease under the ISO standards ISO 3309 and ISO 4335. It is used to define a packetization standard for serial connections. It has discovered itself being used throughout the world.It has been broadly executed because it provides both half-duplex and full-duplex connection lines, point-to-point (peer-to-peer) and multi-point networks, and switched or unswitched medium.HDLC provides different modes of operation, such as a simple sliding window mode for dependable delivery. This is because the internet supports retransmission at larger levels (i.e., TCP). Some Internet applications ... Read More

BlackBerry OS is a proprietary mobile operating system created particularly for Research in Motion's (RIM) BlackBerry devices. BlackBerry OS runs on Blackberry modification phones such as the BlackBerry Bold, Curve, and Pearl and Storm order.The BlackBerry OS is created for smartphone environments and is best popular for its robust provides for push Internet email. This push email service is transferred out through the dedicated BlackBerry Enterprise Server (BES), which has a variant for Microsoft Exchange, Lotus Domino, and Novell Groupwise.A BlackBerry is an end-to-end wireless email solution that enables access to your Outlook Inbox, Calendar, Contacts, and functions with complete ... Read More