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MCA Articles
Page 38 of 94
What is baseband transmission in computer networks?
Digital Modulation is the process of converting between bits and signals.Transmission MechanismsThe various modulation schemes result in various transmission mechanisms which are as follows −Baseband transmission.Passband transmission.Multiplexing TechniquesSharing of a transmission channel by various signals is called multiplexing. The different multiplexing techniques are as follows −Time division multiplexing.Frequency division multiplexing.Code division multiplexing.Now, let us discuss one of the digital modulation schemes.Baseband TransmissionBaseband transmission is transmission of the encoded signal using its own baseband frequencies i.e. without any shift to higher frequency ranges. It is used for short distances.Steps in Baseband TransmissionLet us understand the baseband transmission step by step.Step 1 ...
Read MoreWhat are wireless networks?
Digital wireless communication is not a new idea. Earlier, Morse code implemented the wireless network. Now-a-days, the modern digital systems use wireless systems of the same idea as Morse code as implemented but with better performance.Categories of Wireless NetworksWireless Networks are divided into three categories as explained below −System InterconnectionIt is all about interconnecting the components of a computer using short-range radio. Some companies together design a short-range wireless network called Bluetooth to connect various components like monitor, keyboard, mouse, printer etc, without wires.In simplest form, system interconnection networks use the master-slave concept. The system unit is normally the master. ...
Read MoreWhat are the different types of Castings in computer networks?
Transmitting the data in the form of packets over the internet is called casting.Types of CastingsThe different types of casting are as follows −Unicast − Transmitting data from one host to another host (one-one)Broad cast − Transmitting data from one host to many host (one-all)Multicast − Transmitting data from one host to a particular group of host (one-many).Let us see each casting type in detail −UnicastTransmitting data from one source host to one destination host is called a unicast. It is called as a one to one transmission.For example − source Host IP Address 192.168.20.1 sending data to destination Host ...
Read MoreWhat are the classifications of classful IP addresses?
IP addresses are generally represented by a 32-bit unsigned binary value. It is represented in a dotted decimal format. For example, 9.250.7.5 is a valid IP address.The IP address consists of a pair of numbers −IP address = Class-based IP addressesThe first bits of the IP address specify how the rest of the address should be separated into its network and host part. This IP address consists of network ID and Host ID.Classes of IP addressThere are 5 classes of IP address in computer network, which are as follows −Class AClass BClass CClass DClass EThe numbers of IP addresses possible ...
Read MoreComparison between Bluejacking and Bluesnarfing
Bluetooth is a service that helps in sharing data between multiple devices. We communicate with our computers or any other mobile devices with the help of Bluetooth. Also, it allows us to have a conversation without wires. Nowadays, Bluetooth wireless earphones are there that you can use to listen to music and for discussions. The only problem with these Bluetooth devices is that they have their specific range connected with other devices.BluejackingBluejacking works in a similar way to that of Bluetooth. It is used for sending unlicensed messages to the other Bluetooth device. Bluetooth is the shortrange wireless technology for ...
Read MoreThe Gossip Protocol in Cloud Computing
What is Gossip Protocol?Gossip protocol is a computer peer-to-peer communication mechanism or process based on how epidemics spread. To ensure that data is distributed to all group members, several distributed systems use peerto-peer gossip. Since some ad-hoc networks lack a central registry, the only method to disseminate shared data is for each member to pass it on to their neighbors.Because gossip conveys information just like how a virus spreads in a biological community, the phrase "epidemic protocol" is frequently used interchangeably with the gossip protocol.Periodic, paired inter-process interactions are at the heart of the protocol. The amount of data transferred ...
Read MoreWhat is EDGE (Enhanced Data Rate for GSM Evolution)?
Wireless data operations are expected to increase at an average of 100-200 percent per year, and the mobile communications industry agrees that it will be the cornerstone of the future business. People enjoy the benefits of non-voice services, as evidenced by the massive success of short messaging in many countries.EDGE (Enhanced Data Rate for GSM Evolution)EDGE allows for a faster transmission rate than standard GSM. It makes use of a backward-compatible GSM digital mobile technology extension. EDGE employs part of the ITU's 3G standard and has a pre-3G radio technology. With the proper modifications, it can work on any GPRS ...
Read MoreDifference between MediaFire and Mega
MediafireMediaFire is an online backup service that provides users services such as file hosting, file synchronization, and cloud storage. The company is based in Texas, United states.MediaFire was founded by Derek Labian and Tom Langridge in June 2006 and has around 43 million registered users.It is compatible with almost all platforms such as Windows, Mac OS, iOS, Android and Web Browser.MediaFire offers users 10 GB of free storage and up to 100 TB of paid storage with a maximum file size limit of 20 GB.MediaFire supports single use links, file sharing both private and public, screen capture, selective syncing, notifications ...
Read MoreDifference between Thin Clients and Thick Clients
Thin ClientsA thin client is a computer that uses resources from a central server rather than a local hard drive. Thin clients connect to a server-based computing environment via a remote connection, where most applications, sensitive data, and memory are stored.The majority of the work is done by the server, including starting software programmes, doing calculations, and storing data. Thin clients are part of a larger computing infrastructure in which multiple clients share computations with a single server or server farm.A thin client can be used in three ways; shared terminal services, desktop virtualisation, and browser-based. A graphical user interface ...
Read MoreDifference between iCloud and CloudMe
iCloudiCloud is Apple’s cloud-based ecosystem of applications and tools that you can use almost on all devices. Apple started its service on June 6th, 2011, and has managed to gain more than 850 million users and is built into every apple system.iCloud provides free 5 GB of storage and a paid storage service of up to 2 TB of data, with a maximum file size of 50 GB.It also provides features like family sharing and file sharing among friends and helps track lost devices. With iOS 5, "Find My Friends" was added to iCloud, allowing users to share their current ...
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