Методическое пособие по развитию навыков чтения и говорения на английском языке для студентов
- Навигация по данной странице:
- 1. Read the questions and circle the correct answer.
- Match the words with their synonyms.
- Read the sentences choosing the correct word in bold type.
- Give the Russian equivalents.
- Find the answers to the questions.
- Text B: Network classifications
- 1. Mark the following statements as True or False.
- 2. Put the letters in the following words into the correct order.
- 3. Fill in the blanks choosing from the variants given.
- 4. Give
- 5. Find the answers to the questions.
- Text C: Physical topology
- 1. Link the beginning and the end of the sentence.
- 2. Find the words with similar meaning in the text
- 3. Complete these sentences using a noun or a verb from the box.
- 4. Find the terms to a given definitions.
- 5. Answer the questions.
- Text D: Local Area Networks
- 1. Agree or disagree with the following statements.
- 2. Find the words with an opposite meaning in the text.
- 3. Complete the sentences using active vocabulary.
- 4. Read the sentences translating the Russian fragments unto English.
- SPEAKING PRACTICE Speak on the following topics.
- INFORMATION TECHNOLOGY TEACHING AID FOR FULL AND PART TIME COMPUTER STUDENTS
Text A: Network advantages and challenges
In the early years of the personal computer’s popularity, networks were scarce. Most personal computers functioned as standalone units.
Today, the pervasiveness of network has dramatically changed the face of computing by offering shared resources – hardware, software, and data made available for authorized network users to access. Networks offer the following advantages:
The primary disadvantage of networks is their vulnerability to unauthorized access.
Networks are more vulnerable than standalone computers to malicious code. Whereas the most prevalent threat to standalone computers is disk-borne viruses, networks are susceptible to an ever-increasing number of worms, Trojan horses and blended threats.
Most computer owners are enthusiastic about the benefits provided by networks and believe that those benefits outweigh the risks of intrusions and viruses.
1. A network connects various/variety IT components to allow you to share software.
2. According to the survey of 22 large transnational organizations networking/networks accounted 33 percent of their budget.
3. Many countries have become abundant/abundantly networked for business, government and personal communications.
4. Networks can provide authority/authorized users with the access to data stored on network servers or workstations.
5. The network technology is based on a set of fairly stable/stability concepts.
6. A network can be as simple/simplified as two desktop computers connected to the same printer.
1. Why are computer networks advantageous?
2. Do networks have disadvantages?
3. What types of shared resources are mentioned in the text?
4. What is more vulnerable to the malicious code a network or a standalone computer?
5. Many computer owners are frustrated with the benefits provided by networks, aren’t they?
Text B: Network classifications
In the past, a great diversity of network technologies existed as engineers pioneered various ideas to make data transport faster, more efficient, and more secure. Today, networks are becoming more standardized.
To understand network classifications and make sense of the network options available for your computer, think of a network as composed of several layers of technology. The most important network technology layers are geographical scope, organizational structure, physical topology, network links, bandwidth and communications protocols.
From a geographic perspective networks can be classified as PANs, NANs, LANs, MANs and WANs.
A PAN(personal area network) is a term sometimes used to refer to the interconnection of personal digital devices within a range of about 30 feet (10 meters) and without the use of wires of cables.
A NAN(neighbourhood area network ) provides connectivity within a limited geographical area, usually spreads over several buildings.
A LAN(local area network) is a data communications network that typically connects personal computers within a very limited geographical area – usually a single building.
A MAN(metropolitan area network) is a public high-speed network capable of voice and data transmission within a range of about 50 miles(80km).
A WAN(wide area network) covers a large geographical area and usually consist of several smaller networks, which might use different computer platforms and network technologies.
The Internet is the world’s largest WAN.
2. From a geographic perspective networks can be classified only as PANs.
3. A WAN consists of one huge network.
4. LANs use a variety of wired and wireless technologies, standards and protocols.
5. Geographical scope is an area in which network devices are located.
3. Fill in the blanks choosing from the variants given.
1. School computer labs and home networks are… of LANs.
a) variants; b) examples; c) types
2. Each network is… from a collection of technologies.
a) constructed; b) organized; c) generated
3. Networks for nationwide banks and superstores can be … as WANs.
a) classified; b) referred to; c) called
4. Localized networks … include a small number of computers.
a) never; b) typically; c) always
5. As the area of network coverage expands the number of workstations…
a) grows; b) reduces; c) rises
6. The technology from a single … is often used in a casual conversation to classify a network.
a) layer; b) category; c) level
4. Give the English equivalents.
5. Find the answers to the questions.
1. Why did a great diversity of network technologies exist in the past?
2. Is geographical scope important?
3. What are the network options?
4. Can a NAN provide connectivity within an unlimited geographical area?
5. The Internet is the largest world’s LAN, isn’t it?
Server: A computer responsible for storing data and programs.
Workstation: A personal computer connected to a network.
Networked peripheral: A device, such as printer or scanner, directly connected to a network rather than to a workstation.
Network device: An electronic device that broadcast network data, boost signals, or routes data to its destination. The arrangement of devices in a network is referred to as its physical topology. These are star, ring, bus, mesh, and tree topologies and the pathways between nodes can be linked by physical cables or wireless signals.
A network arranged as a star topology features a central connection point for all workstation and peripherals. The central connection point is not necessarily a server-more typically it is a network device called a hub.
A ring topology connects all devices in a circle ring. This topology minimizes cabling, but failure of any one device can take down the entire network.
A bus topology uses a common backbone to connect all network devices. The backbone functions as a shared communication link, which carries network data.
A mesh topology connects each network device to many other network devices. Data traveling on a mesh network can take any of several possible paths from its source to its destinations.
A tree topology is essentially a blend of star and bus networks. Multiple star networks are connected into a bus configuration by a backbone.
Various networks can be interconnected. Two similar networks can be connected by a device called a bridge. Networks that use different topologies and technologies can be interconnected by using gateways. The most commonly used gateway is a router, an electronic device that joins two or more networks.
2. Find the words with similar meaning in the text.
3. Complete these sentences using a noun or a verb from the box.
1. A device, such as … directly connected to a network rather than to a workstation.
2. An electronic device that … network data, boost signals, or routes data to is destination.
3. A network arranged as a … features a central connection point for all workstations and peripherals.
4. The backbone … as shared communication link, which carries networks data.
5. The central connection point is not necessarily a … - more typically it is a network device called a hub.
6. A mesh topology … each network device to many other network devices.
5. Answer the questions.
Text D: Local Area Networks
Today, most LANs are configured with Ethernet technology and use compatible Wi-Fi standards in applications that require wireless access. When you connect your computer to a home, school, or workplace network, it will probably use Ethernet or Wi-Fi standards, so these technologies are worth a more detailed look.
In 1980, Bob Metcalfe’s 1976 concept for Ethernet became commercially available. Ethernet simultaneously broadcasts data packets to all network devices. A packet is accepted only by the device to which it is addressed.
The original Ethernet standard carried data over a coaxial cable bus topology at 10 Mbps. Today, the term ‘Ethernet’ refers to a family of LAN technologies that offer various data transmission rates over fiber-optic and twisted-pair cables arranged in a bus or star topology. Fast Ethernet is currently the most popular for small to medium LANs, like those you might find in homes and small businesses.
Workstation and other devices that connect to an Ethernet require Ethernet circuitry, which can be built into the main board or added as an Ethernet card.
These cables link workstations and peripherals to a central connection point called an Ethernet hub. Today, most Ethernet hubs also serve as routers.
Wi-F, the Ethernet’s cousin, refers to a set of wireless networking technologies defined by IEEE 802.11 standards that are compatible with Ethernet.
As with a wired Ethernet network, every workstation and network peripheral requires network interface circuitry, which can be built in or added as Wi-Fi card. A Wi-Fi card includes a transmitter, receiver, and antenna to transmit signals. Wi-Fi cards for notebook or tablet computers can plug into a PCMCIA slot or USB port.
Bluetooth is a short-range wireless network technology that’s designed to make its own connections between electronic devices, without wires, cables or any direct action from a user. Unlike Wi-Fi, Bluetooth is not typically used to connect a collection of workstations. Instead, Bluetooth connectivity replace the short cables that would otherwise tether a mouse, keyboard, or printer to a computer.
1. Agree or disagree with the following statements.
2. Find the words with an opposite meaning in the text.
3. Complete the sentences using active vocabulary.
4. Read the sentences translating the Russian fragments unto English.
5. Answer the questions.
Speak on the following topics.
1. Ways of reduсing costs by sharing networked hardware and software.
2. Similarities and differences of numerous types of networks.
3. Different types of network topologies and the advantages of each of them.
4. The current LAN technologies.
Св. план 2012, поз. 72
ПО РАЗВИТИЮ НАВЫКОВ ЧТЕНИЯ И ГОВОРЕНИЯ
НА АНГЛИЙСКОМ ЯЗЫКЕ ДЛЯ СТУДЕНТОВ ФИТиУ
ВСЕХ ФОРМ ОБУЧЕНИЯ
FOR FULL AND PART TIME COMPUTER STUDENTS
Дубовец Наталья Ивановна
Туник Ольга Владимировна
Булавская Татьяна Владимировна и др.
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