The correct answer is Dynamic Host Configuration Protocol.

Key Points

• DHCP is acronym of Dynamic Host Configuration Protocol.
• A Dynamic Host Configuration Protocol is a network server that automatically provides and assigns IP addresses, default gateways and or network parameters to client devices.
• It will help to prevent duplication of addresses and also help administrator keep good records.
• DHCP is designed to improve efficiency of allocating IP addresses.
• DHCP services exist for networks running both Internet Protocol version 4 (IPv4) and  Internet Protocol version 6 (IPv6).
• The IPv6 version of DHCP protocol is commonly called DHCPv6.

Additional Information

• Or common network protocols examples:
  • Address Resolution Protocol (ARP)
  • File Transfer Protocol(FTP)
  • HyperText Transfer Protocol(HTTP)
  • Post Office Protocol (POP3)
  • Simple Mail Transfer Protocol (SMTP)
  • Secure Shell Protocol (SSH)

The correct answer is Used to deliver data on World Wide Web.

Key Points

• The HTTP protocol is used to deliver data on World Wide Web 
  • It stands for Hypertext Transfer Protocol.
  • It is an application layer protocol designed within framework of Internet Protocol Suite.
  • It is base of data communication on World Wide Web.
  • It provides a standard for web browsers that facilitates users to exchange information over internet. 
  • A typical flow over HTTP involves a client machine requesting a server, which n sends a response message.
  • An HTTP request is a way internet communications platforms such as web browsers ask for information y need to load a website.
  • Each HTTP request made across Internet carries with it a series of encoded data that carries different types of information.

Additional Information

• Hypertext Transfer Protocol Secure (HTTPS)
  • It is protocol where encrypted HTTP data is transferred over a secure connection.
  • It ensures data security over network - mainly public networks like Wi-Fi. 
  • HTTPS encryption is done bi-directionally, which means that data is encrypted at both client and server sides.

The Correct Answer is "Web administration".

Important Points

• An Internet service provider (ISP), is a company that provides Internet connections and services to individuals and organizations.
• In addition to providing access to Internet, ISPs may also provide software packages and a personal Web site or home page.
• ISPs can host Web sites for businesses and can also build Web sites mselves.
• ISPs are all connected to each or through network access points and public network facilities on Internet backbone.

Some of se services include:

• Email services
• Web hosting services
• Domain Registration
• Browser and software package.                                            

Key Points

• An internet service provider (ISP) is a company that provides web access to both businesses and consumers.
• ISPs may also provide or services such as email services, domain registration, web hosting, and browser services.
• An ISP is considered to be an information service provider, storage service provider, internet network service provider (INSP), or a mix of all of m.
• Internet use has evolved from only those with university or government accounts having access to nearly everyone having access, wher it's paid or free.
• Access has gone from dial-up connections to high-speed broadband technology.

The correct answer is option 1 i.e Intranet.

Key Points

• A computer in a network cannot be accessed outside of local network unless given permission is called  intranet.
  • Intranet is established mainly with technologies for local area networks and wide area networks.
  • Larger business organizations allow users within ir intranet to access public internet through firewall servers.
  • The intranet is functionally useful only for a selected group of people.
  • Comparing to Internet, intranet is a closed network.
  • Microsoft SharePoint, Huddle, Igloo, and Jostle are common examples of Intranet service.
• Additional Information 
• The Internet is a worldwide network of computers.
  • ARPANET is considered as ancient form of internet.
  • Vinton Gray Cerf is recognized as " far of Internet",

The correct answer is Client.

Key Points

• A client is a computer that connects to and uses resources of a remote computer, or server.
• Many corporate networks comprise a client computer for each employee, each of which connects to corporate server.
• The server provides resources like files, information, Internet and Intranet access, and external processing power.
• In case of processing, any work done on server is referred to as "server-side" work. Any work done on local client is similarly called "client-side."

Additional Information

Electronic spamming is use of electronic messaging systems to send an unsolicited message (spam), especially advertising, as well as sending messages repeatedly on same site. While most widely recognized form of spam is email spam, term is applied to similar abuses in or media: instant messaging spam, Usenet newsgroup spam, Web search engine spam, spam in blogs, wiki spam, online classified ads spam, mobile phone messaging spam, Internet forum spam, junk fax transmissions, social spam, spam mobile apps, television advertising and file sharing spam. It is named after Spam, a luncheon meat, by way of a Monty Python sketch about a menu that includes Spam in every dish.

The correct answer is option 1 i.e., Trojan Horse

• Trojan Horse is a malicious program that does not replicate automatically. A user has to execute Trojans.
• A Trojan Horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer.
• A Trojan is designed to damage, disrupt, steal, or in general, inflict some or harmful action on your data or network.
• It seeks to deceive you into loading and executing malware on your device.

The correct answer is Cryptography

• Cryptography includes a set of techniques for scrambling or disguising data so that it is available only to someone who can restore data to its original form. Cryptography helps ensure data confidentiality, data integrity, auntication, and non - repudiation.
• Cryptography is associated with process of converting ordinary plain text into unintelligible text and vice-versa. It is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it. Cryptography not only protects data from ft or alteration but can also be used for user auntication.
• Earlier cryptography was effectively synonymous with encryption but nowadays cryptography is mainly based on mamatical ory and computer science practice.

The correct answer is Router.

Key Points

• A router is a networking device that forwards data packets between computer networks.
• Routers perform traffic directing functions on Internet. Data sent through internet, such as a web page or email, is in form of data packets.
• A packet is typically forwarded from one router to anor router through networks that constitute an internet work until it reaches its destination node.
• A router is connected to two or more data lines from different IP networks.
• When a data packet comes in on one of lines, router reads network address information in packet header to determine ultimate destination.
• Then, using information in its routing table or routing policy, it directs packet to next network on its journey.
• The most familiar type of IP routers are home and small office routers that simply forward IP packets between home computers and Internet.
• More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to powerful core routers that forward data at high speed along optical fiber lines of Internet backbone.

The correct answer is  hub.

Key Points

• An Ernet hub, active hub, network hub, repeater hub, multiport repeater, or simply hub is a network hardware device for connecting multiple Ernet devices toger and making m act as a single network segment.
• It has multiple input/output (I/O) ports, in which a signal introduced at input of any port appears at output of every port except original incoming.

Additional Information

• Tim Berners-Lee, a British scientist, invented World Wide Web (WWW) in 1989 while working at CERN.
• The first web page address was http://info.cern.ch/hypertext/WWW/TheProject.html.
• ARPANET adopted TCP/IP on January 1, 1983.
• NCSA Mosaic ran on Windows computers was first browser to surf internet.