Communication Technologies

Ad-hoc networks are commonly used in large organisation LANs.

• True

• False

Which two of the following are benefits of ad-hoc networks?

• Easier to connect devices together to set up the network.

• Faster as ad-hoc networks support greater data transfer speeds.

• Greater security as it is harder for malicious users to connect to the network.

• Less expensive due to not requiring a central access point.

What is tethering?

• A public wi-fi hotspot that can be found in many places like restaurants, cafés and hotels, typically not requiring a password to access.

• A connection between a device and a central access point, such as a router, in order to access the internet.

• A network of multiple devices within the personal area of an individual used to share files between devices.

• A device used to create a personal hotspot that other devices can connect to and make use of its internet connection.

What type of encryption is commonly used on open networks?

• None

• End User Encryption

• WPA Encryption

• Encryption Keys

Which three of the following are issues that affect ad-hoc network performance?

• Reduced security due to lack of encryption.

• Harder setup due to difficult connection process.

• Slower speeds due to smaller max transfer speed.

• Reduced range due to weaker antennas.

• Greater interference due to crossed connections.

What factor affects network availability in - Rural areas and developing countries.

• Black Spots

• Number of Mobile Masts in an area

• Location of the Mobile Masts

Black Spots prevent good network signal. What are blackspots?

• Rural areas and developing countries often lack the required infrastructure

• Cell phone towers may be far away and so signals may not be available

• Geographical features, such as mountains and hills can block signals

Cell phone towers may be far away and so signals may not be available to provide network access. This is called.

• Black spots

• Location of the network

• Mobile Network Coverage

Which of the following is not an example of an electronic project management tool?

• A. Collaborative work management tools

• B. Video and web conferencing

• C. Project management software

• D. Virtual office support software

What is a Gantt chart?

• Messages sent direct to a workers phone

• A plan with key milestones and deadlines for each subtask

• A set of tasks that need to be completed. Once completed, each task can be ticked off

• An electronic form of letter which can contain attachments such as documents or images