ISSC340Week3Assignment - The most common tunneling...

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Name: Jen Warren Date: June 16, 2015 ISSC340 Week 3 Assignment (3% of Grade) Lesson 3 Review: Networking and the Internet The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What is an extranet? (Minimum word count: 30) An extranet can be considered a subset of the internet. It’s an external network created to give access to selected users, externally. It is not available to the public. Businesses commonly use it to share information and store files. 2. Describe the function of a firewall. (Minimum word count: 70) A firewall is a security barrier. It is part of a system or network that was created to block unauthorized access but you can still have outward communication. It controls the flow of information both into and out of a LAN. It has two network interface cards. One of them faces the LAN and the other faces the public network. All information coming in to the LAN must pass through the firewall along with all info going out of the LAN. 3. Which tunneling protocols are commonly used by VPNs? (Minimum word count: 25)
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Unformatted text preview: The most common tunneling protocols used by VPNs are the Point-to-Point Tunneling Protocol (PPTP), the Layer 2 Tunneling Protocol (L2TP) and IP Security (IPsec). 4. Describe a differential backup. (Minimum word count: 35) A differential backup is used in conjunction with a full back up. A differential backup copies all of the data that was changed since the last full back up. The size of a differential backup becomes larger until the next full back up is complete. 5. What is authentication? (Minimum word count: 50) Authentication is the process of verifying an individual’s identity if the user logs onto a system or network. An example is when you have to enter a user name and password to access a network, computer or wireless internet. If the user is unable to give this information they are denied access to whatever it was that they were trying to access. 6. Match each term below with the correct definition. Answer: 1 – D 2 - E 3 - A 4 - C 5 - B...
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