Wireless Internet Services

 

There are two primary options for connecting your home PC or LAN to the Internet: satellite Internet service or fixed wireless Internet service.

Most people are familiar with services that provide access to television programming over a personal satellite dish. Many companies that provide satellite TV also offer Internet access.

Satellite Internet service uses satellite to transmit computer data directly to and from a satellite dish owned by an individual. A satellite Internet modem connects the satellite dish to a computer. In many rural areas, satellite Internet service is the only alternative to a dial-up connection. But on the downside, satellite data transport is subject to latency delays of one second or more, which occur as your data is routed between your computer and a satellite that orbits 22,200 miles above the Earth. Latency might not pose much of a problem for general Web surfing and downloading files, but it can become a stopper for interactive gaming that requires quick reaction. Besides, satellite data transport speeds might seem to decline when other users subscribe to the service because the satellite’s bandwidth is shared among all users.

Satellite transmission and reception can be blocked by adverse weather conditions, such as snow and rain, which makes this type of data transport less reliable than most wired options.

Fixed wireless Internet service is designed to offer Internet access to homes and businesses by broadcasting radio frequency data signals over areas large enough to cover most cities and outlying areas. Wireless technologies such as WiMAX (Worldwide Interoperability for Microwave Access) have less latency than satellite Internet service and can offer connection speeds suitable for online gaming and teleconferencing. WiMAX is an Ethernet-compatible network technology that is essentially wide-area Wi-Fi.

With a fixed wireless connection, your wireless service provider supplies you with a wireless modem that you connect to your computer. The modem includes a transceiver to send and receive signals to a wireless point of access, usually located nearby.

Вариант 5

1. Перепишите предложения, найдите в них инфинитив и подчеркните его, определите его форму. Письменно переведите предложения.

 

1. Without any visible sign or warning, hackers can infiltrate your computer to obtain personal information.

2. Natural languages are believed to be applied in the 5^th generation computers.

3.To program in a good way the programmer needs detailed data about the program and the way it is to be done.

4. Dr. H. Aiken is known to have created the first completely automatic digital computer.

5. The difficulty will be to debug the program.

 

2. Перепишите предложения, подчеркните инфинитив и определите его функцию. Письменно переведите предложения на русский язык.

 

1. It is possible to secure remote connections by setting up virtual private network access to a remote access server.

2. Your ISP attempts to assign an IP address to your high-speed connection.

3. To initiate a VPN connection you have to dial your ISP as usual.

4. Network Address Translation is a way to configure a network so that workstations are hidden from Internet intruders.

5. It is an offence to make unauthorized access to computer materials.

 

3. Перепишите предложения. Подчеркните в каждом инфинитивный оборот и определите его форму (объектный, субъектный и предложный инфинитивный оборот). Письменно переведите предложения на русский язык.

 

1. Slooping programs remove the need for other users to wait for a busy printer to become free.

2. This software allows you to discover whether any hackers are trying to break into your computer.

3. Many systems let you check to see whether the recipient has accessed your message.

4. A modem at the other end of the transmission is supposed to demodulate the signal.

5. A modem is known to transmit a 1.070 Hz tone for a 0, and a 1.270 Hz tone for a

 

4. Преобразуйте предложения, воспользовавшись инфинитивом или инфинитивным оборотом и словами в скобках, если они даны. Письменно переведите полученные предложения на русский язык.

 

1. He said: “Never make unauthorized access to computer materials”.

2. Would you be very good and forward my letters while I am away. (so)

3. There is a tendency that this method is used in all the experiments. (for)

4. He was the only one who realized the danger.

5. Is it likely that the time display on my computer is one hour slow.

 

5. Перепишите предложения, употребив нужную форму прилагательного (much – many, (a)little – (a) few). Письменно переведите предложения на русский язык.

 

1. We’ve made … progress.

2. Do computer users have … influence over the way the computing develops?

3. A basic Wi-Fi antenna can be created with … …wires and an empty Pringles container.

4.... security measures for LANs are the same as for standalone computers.

5. Today very … companies don’t have a web site that provides information about their products and services.

 

6. Прочтите и письменно переведите текст.