INFORMATİON TECHNOLOGİES

IBM introduced the first online reservation system, SABRE (Semi-automated Business Research Environment) in 1960 after George Stibitz performed the first remote computation by using a teletype to send commands to the Complex Number Computer in New York in 1940. Therefore, the correct option is B.

Network Interface Controller (NIC) provides the computers with the ability to access the transmission media. Therefore, the correct option is D.

A modem is a device that serves as a bridge between a local network and the Internet. The primary function of a modem is to convert between analog and digital data in real time. Therefore, the correct option is B.

A router connects multiple computer networks by using wired or wireless connections. Routers forward data packets among networks by using the routing information inside these packages. Therefore, the correct option is D.

Users send HTTP requests to web servers by client programs called web browsers. Some of the most common browsers are Google Chrome, Mozilla Firefox, Internet Explorer, and Safari. Therefore, the correct option is E.

Hypertext Markup Language, HTML is the language that describes and defines the content of a web page. Therefore, the correct option is A.

Radio wave is a component of unguided media while the remaining options are components of guided media. Therefore, the correct option is E.

A coaxial cable is a type of cable that contains two parallel conductors. Although coaxial cables have high bandwidth and they can be used over long distances, they are difficult to install and expensive than twisted pair cables. Therefore, the correct option is A.

Packet switching is a technique that combines the powerful features of circuit switching and message switching. The entire message is divided into smaller parts that are called packets. The destination information is included in the header of a packet. Therefore, the correct option is C.

Transport Layer delivers data across network connections. It provides message segmentation, message acknowledgment, session multiplexing, and message traffic control. Therefore, the correct option is D.