计算机专业英语unit 5-2

Unit Five Network Security(2)
Contents
1. Lead-in activity 2. Passage learning
3. Exercises 4. Fun time
Lead-in activity:
• Do you use wireless network a lot?
Thanks for listening~
Passage-learning
Para one：
Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you to stop unauthorized users (also known as “intruders”) from accessing any part of your computer system. An effective network security strategy requires identifying threats and then choosing the most effective set of tools to combat them.
wireless networks. You can either install software
firewalls on each computer, or install a hardware
firewall on your entire network.
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Exercises
Find Information Task Ⅰ: 1. No, it is different. 2. A small home or an office would only require basic security. 3. Large businesses will require high maintenance and advanced software and hardware 4. Yes, it is. 5. We can either install software firewalls on each computer, or install a hardware firewall on your entire network.
Exercises
Task II:
Exercises
Task Ⅰ: 1. Security Management 2. large businesses network 3. basic security 4. high maintenance 5. advanced software and hardware 6. malicious attack 7. firewall 8. wireless network
Passage-learning
Para three：
To small homes, every computer connected to the Internet should be protected by a firewall, and that goes double — or triples — for computers on
Passage-learning
Para two：
Security Management for networks is different for all kinds of situations. A small home or an office would only require basic security while large businesses will require high maintenance and advanced software and hardware to prevent malicious attacks from hacking and spamming.