CIS 330 Exams 3 Short Answer

Describe the shapes and polishes of SMF ferrules to reduce back reflection?

-APC: Curved surface but ends are placed at an angle to reflect signal loss in a different direction -UPC: Rounded surface allows for better connections wit older connectors

What is the difference between bandwidth and throughput?

-Bandwidth is the theoretical amount of data that can pass through a channel. -Throughput is the actual amount of data that passes through a channel.

What are the differences between single mode fiber and multimode fiber?

-Single Mode Fiber: narrow core where light travels only a single path and is very fast. -Multimode fiber: Wider core where multiple light pulses bounce at difference angles.

Radiation patterns, classify the two categories?

-Unidirectional antenna: issues wireless signals along a single direction. -Omnidirectional antenna: issues and receives wireless signals with equal strength and clarify in all directions.

What are the different antenna types and why is omnidirectional antenna unadvisable?

-Unidirectional antenna: issues wireless signals along a single direction. -Omnidirectional antenna: issues and receives wireless signals with equal strength and clarify in all directions. -Omnidirectional antennas are not advisable because omnidirectional antennas receives and issues signals with equal strength.

What is a hidden node problem? How can it be solved?

A hidden node problem is where a node is not visible to other nodes in the coverage area and can be solved by reserve the medium for one node's use.

What are the different types of wireless topologies?

Ad hoc, infrastructure, and mesh

Whys should the WPS PIN fissure be avoided?

Can be hacked through brute force attack.

How does configuration of wireless clients for wireless access in an enterprise environment differ from normal setup?

Configuration for wireless clients requires the users to install an agent to access the network(on-boarding) and then the agent must be removed after(off-boarding)

Noise that can mess with signals, what are the causes?

Electro-magenetic interferences and cross talk can mess with signals.

What is the biggest limiting for fiber optic cable length?

The maximum limit has mostly to do with optical loss where the light signal degrades.

Why should the access point not always use all power for broadcasting wireless signals?

To help avoid collisions