Главная страница Случайная страница
КАТЕГОРИИ:
АвтомобилиАстрономияБиологияГеографияДом и садДругие языкиДругоеИнформатикаИсторияКультураЛитератураЛогикаМатематикаМедицинаМеталлургияМеханикаОбразованиеОхрана трудаПедагогикаПолитикаПравоПсихологияРелигияРиторикаСоциологияСпортСтроительствоТехнологияТуризмФизикаФилософияФинансыХимияЧерчениеЭкологияЭкономикаЭлектроника
V. Прочитайте текст и дайте ему название.
|
|
Wireless (Wi-Fi) networks are just like fixed LANs, but instead of using cables, devices are linked by radio waves.
Each computer in a wireless network requires a wireless network interface card (NIC). These can be built in or you can use plug-in adaptors. These allow each component in the network to communicate with a wireless access point (AP) to create a wireless local area network (WLAN). The AP operates like a router in a fixed LAN. It also provides a bridge which plugs into the hub of a fixed LAN allowing both fixed and wireless users to talk to each other. If your LAN is connected to the Internet, the WLAN can also use it. If not, you can connect the WLAN to the Internet via an ADSL or cable modem.
What are the advantages of a wireless network? You don’t need cabling. In older buildings, it can be expensive to install cables and access points. With Wi-Fi, one access point can cover an entire floor or even a building. You can work anywhere within range of the access point. On a sunny day, you could work outside. You can make any room in the house your study. There are now Wi-Fi hotspots in hotels, libraries and airports, so you can link to a network away from home or your office.
There are disadvantages. Fixed LANs can run 1000 Mbps. Wireless networks are much slower and the further you are from an access point, the slower the rate. Other users may be able to intercept your data. Encryption programs like Wired Equivalent Privacy (WEP) can help.
VI. Прочитайте текст и найдите сложносочиненные предложения. Назовите их признаки.
VII. Переведите второй абзац текста.
VIII. Передайте основное содержание третьего и четвертого абзацев.
3.2. Многофункциональные слова after, before, as, for, since.
Признаки распознавания функций и значений after.
| 1. after + в начале или середине сложного предложения | = подчинительный coюз - после того, как | |
| C + CK | ||
| простое предложение | ||
1. I found the message after he had left.
2. After the equipment had been repaired, it was sent away.
| 2. местоимение, after + существительное/именное = предлог – после словосочетание, герундий 1. The meeting ended after eleven. 2. They left the laboratory after finishing the experiment. |
I. Определите функции и значения выделенных слов. Назовите признаки after в роли союза. Предложения промоделируйте.
1. After the 1 the2 3ed in the 4 for a 6.
2. After the 1 2 did the 3 the 4 5ed the 6 in the 7.
3. The 1 2ed the 3 after the 4 had done the 6 of 7.
4. The 1 2 did the 3 a fter seven.