إظهار الرسائل ذات التسميات Section 4. إظهار كافة الرسائل
إظهار الرسائل ذات التسميات Section 4. إظهار كافة الرسائل
السبت، 23 أبريل 2016
In a network that contains two servers and twenty workstations, where is the best place to install an Anti-virus program?
the best place to install the Anti-virus program, is in the servers, because the servers is like the main brain to the network and all the data that comes from the Anti-virus program will go through it to all workstations.
List three types of transmission media and describe their respective advantages and disadvantages.
(Fiber- optic cable)
advantages:
- acceptable security
- bandwidth of 10 Gbps.
- Super fast
disadvantages:
- High investment cost
- Need for more expensive optical transmitters and receivers
(Satellite)
advantages:
- High bandwidth
- Coverage over a large geographical area
- Can be cheaper over long distances
disadvantages:
- Huge initial cost
- Noise and interference
- Propagation delay
(Microwave)
advantages:
- No cables needed
- Multiple channels available
- Wide bandwidth
disadvantages:
- Line-of-sight will be disrupted if any obstacle, such as new buildings, are in the way
- Towers are expensive to build
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