Networks and Communications Security Case Study Answer

Peter O’Day, Manager, Technical and Communications, needs you to set up a secure communications infrastructure with a perimeter based firewall. What is needed to deploy an effective firewall?

First to deploy Any Device in network you know where to put device in network infrastructure firewall can be put before or after router .

• Policy required
• Some training required
• Monitoring skill required
• Change control knowledge required

Why is a switch preferable to a hub even though it costs more?

• A switch is more efficient at passing along traffic with better traffic management.
• Switch can allow multiple simultaneous packet deliveries from different sources to different receivers.
• VLAN can be created in switch and there is ability to isolate the traffic

Why is the use of CAT5e cable better than the use of Fiber? What are the disadvantages of UTP (Unshielded Twisted Pair)?

CAT5e also call Ethernet , Unshielded twisted pair cable.

Advantages:

1. it is cheaper
2. Low bandwidth but good for networking
3. Easy to install
4. Easy to maintain
5. Speed is low ..

Disadvantages:

1. Not Secure .
2. More Susceptible for sniffing and Electro magnetic interference (EMI).

Match the protocols to their correct layer of the OSI stack. For protocols that operate at multiple layers, choose the layer at which the protocol first is used:

Match these common services to their correct port: