Network Security

Unit 6 Lesson 15 Talking about Network Security

• Grammar: Past Perfect Tense
• Ferghana- 2022

Elicitation

• APPENDIX 1
• What are the potential security threats related to a network?
• What are their solutions?
• Have ever faced attacks to your network system? If yes, what was the solution?
• What solutions will you recommend to secure the network?
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APPENDIX 2. GLOSSARY

• Learn the acronyms
• VPN: virtual private network
• SSL: Secure Socket layer
• 2FA: two-factor authentication
• WAF: The web application protection firewall

APPENDIX 3. LANGUAGE. VIDEO.

• When do we use the past perfect tense?
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• Completed action before something else in the past
• The past perfect tense is often used to describe something that occurred before another event in the past. We can also use it for actions that happened before a specific point in time in the past.
• Example:
• I did not have a lot of money because I had lost my job.
• I had never seen anything like that before I came to New York.
• She knew what was going to happen in that movie because she had read the book.
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All of these sentences are describing actions that happened before another action in the past. We use very often adverbs like „because“ or „before“. 

• All of these sentences are describing actions that happened before another action in the past. We use very often adverbs like „because“ or „before“. 
• Duration of the event in the past
• We use the past perfect tense to describe that some event had lasted in the past before some other event/action happened. We use it when something started in the past, had duration and continued until another action occurred.
• Example:
• Before I broke my car, I had had it for 10 years.
• They were sad about giving their dog away because he had lived with them for 4 years and was a part of their family.
• Notice that in the first sentence we use the verb „had“ twice. If we want to describe that we had something (owned it), we need to use the verb „had“ to describe its past perfect and another verb „had“ as the main verb in its past participle form.
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