Exam 5: Lans and Wlans

Case 3 You have just secured a new job with a new firm that has a lot of industrial secrets to protect, or else risk loss of their competitive advantage. Your role is to learn as much as possible about encryption so you can help the firm keep their initiatives confidential until they are released to the market. In the context of computing, encryption can be used in many ways, EXCEPT ____.

As shown in the figure above, the TCP/IP protocol detects packet collisions, deletes the colliding signals, resets the network, and prepares to retransmit the data.

The waveform shown in the figure above is a digital waveform.

1. 2. 3. In the figure above, the network marked 1 is configured in a(n) central topology.

What are the steps to set up an Ethernet LAN?

Critical Thinking questions (Multiple Choice) Which of the following is NOT true about WiFi standards?

What is Bluetooth?

Adapters, like the one shown in the figure above, simply plug into a serial port on the outside of your computer s system unit.

The best-known communications protocol is probably SMTP .

Critical Thinking questions (Multiple Choice) Which of the following does NOT impact signal strength on a wireless network?

What should you consider if your network stops working?

A Bluetooth network is sometimes called a(n) ____________________.

The Internet is the largest example of a(n) LAN .

Wireless LANs are easy to install, and it is typically not necessary to secure them from intrusions.

A wireless ____ key is the basis for scrambling and unscrambling the data transmitted between wireless devices.

Case 3 You have just secured a new job with a new firm that has a lot of industrial secrets to protect, or else risk loss of their competitive advantage. Your role is to learn as much as possible about encryption so you can help the firm keep their initiatives confidential until they are released to the market. If as part of your work you are able to devise a 40-bit key to protect information, how long would it take a personal computer to crack this key?

High-bandwidth communications systems are sometimes referred to as ____________________.

Critical Thinking questions (Multiple Choice) To divide a message into several packets that can be routed independently to their destination, use ____.

For security reasons, it is not advisable to allow shared access to the root directory of the C drive on your computer.