1. ict companies and organizations. Task Work on new vocabulary

What is the difference between public and private networks?
Often offered by nearby businesses and other publicly accessible areas, public networks are a convenient way to connect to the Internet.

• 
  Some public Wi-Fi networks require a password before a connection is made.
  

If the network displays a lock icon in your list of available Wi-Fi networks, it
requires a password.

• 
  Some networks do not require a password to connect, but require you to log in using your web browser before accessing the Internet.
  
• 
  Other public networks do not require a password at all. Any compatible device may connect to these Wi-Fi networks without authentication.
  

What was the first computer network?
One of the first computer networks to use packet switching, ARPANET, was developed in the mid-1960s and is the direct predecessor of the modern Internet.

The first ARPANET message was sent on October 29, 1969.

Task 2. Work on new vocabulary.

English	Uzbek	Russian
Network	Tarmoq	сеть
Peripherals	qo’shimcha qurilmalar	Перефирийные (дополнительные) устройства
Public networks	Jamoat tarmoqlari	общественные сети
Private networks	xususiy tarmoqlar	частные сети
Require	talab qilmoq	требовать
Lock icon	qulf belgisi	значок замка
Password	Parol	пароль
Share	Ulashmoq	делиться
Devices	qurilmalar	устройства
Available	Mavjud	в наличии, существующий
Transfer	o’tkazmoq	переводить
Virus	Virus	вирус
Malware	zararli dasturiy ta’minot	вредоносные программы
Vulnerability	Zaiflik	уязвимость
Complexity	murakkablik	сложность

Task 3. Fill in the gaps with the given words box.

Network Devices Password ARPANET Internet Public networks

1. An example of a network is the internet which connects millions of people all over the world.

2. One of the first computer networks to use packet switching, ARPANET was developed in the mid-1960s.
3. Some networks do not require a password to connect.
4. Public networks are a convenient way to connect to the Internet.
5. A network is a collection of computers, servers, mainframes, devices peripherals, or other devices connected to allow data sharing.
6. If the network displays a lock icon in your list of available Wi-Fi networks, it requires a password.


Task 4. Match the nouns with appropriate adjectives.

1. data f. transferring

2. network e. configuration
3. areas d. accessible
4. way c. convenient
5. money b. sharing
6. devices a. peripheral


Task 5. Answer the following questions

1. What is a network?

A network is a group of computers or other devices that are connected together, usually by cables or Wi-Fi, to share data, resources, or services.
2. What types of network topology have you learnt?
Bus topology, ring topology, star topology, mesh topology.
3. What are the advantages of a network?
It allows users to share information, resources, and services among different devices and locations.
4. What are the advantages of a network?
It allows users to share information, resources, and services among different devices and locations
5. When was the first computer network developed?
According to the web search results, the first computer network was developed in 1969, when ARPANET (Advanced Research Projects Agency Network) became the first connected computer network.
6. When was the first message sent?
According to the web search results, the first message sent over the Internet was on October 29, 1969, when two programmers, Charley Kline and Bill Duvall, attempted to transmit the word “login” from UCLA to Stanford Research Institute using ARPANET, one of the world’s first computer networks and the precursor to the Internet.

9. RELATIVE CLAUSE
Task 1. Study the given grammar material.
Relative clauses give us information about the person or thing mentioned. 
Defining relative clauses give us essential information – information that tells us who or what we are talking about.
The woman who lives next door works in a bank. 
These are the flights that have been cancelled.
We usually use a relative pronoun or adverb to start a defining relative clause: who, which, that, when, where or whose. (See table 3)
Table 4

Relative clause
Who/that We can use who or that to talk about people. That is more common and a bit more informal.	She's the woman who manages helpdesk department of the company. He's the man that I helped me with the installation of a new software.
Which/that We can use which or that to talk about things. That is more common and a bit more informal.	There was a one-year guarantee which came with the TV. The laptop that I bought last week has started making a strange noise!
When can refer to a time.	Weekend is the time when I'm able to attend C++ online cources.
Where can refer to a place.	That's the office where the administration is located.
Whose refers to the person that something belongs to.	He's the best software developer whose programs are well known all over the world.
Omitting the relative pronoun: Sometimes we can leave out the relative pronoun. For example, we can usually leave out who, which or that if it is followed by a subject. The assistant [that] we met is really smart in computer setting. (we = subject, can omit that) We can't usually leave it out if it is followed by a verb. The assistant that helped us was really smart in computer setting. (helped = verb, can't omit that)