Network Operations And Diagnostic (Chapter 6)

Question 1

NIC Properties (Wired)

Answer 1

Auto Negotiation (speed & duplex)
- allows the NIC to communicate at varying signaling speeds and Half/full duplex.
- most settings can be left to default.

Question 2

NIC Properties (Wireless)

Answer 2

Auto Negotiation
- Wireless mode needs to speak to the same frequency as the access point
- Transmit power set to high as default
Wake on LAN
- Allows the NIC to be active during standby
- Boots pc with ‘magic packet’

Question 3

NIC Properties

Answer 3

Located under Control Panel -> Network & Sharing -> Change Adapter settings.
Select network adapter properties -> configure -> advanced

Question 4

WPA2

Answer 4

Wi-fi Protected Access
A security protocol for WiFi that simplifies secure access point setup
- NIC and Access points must be compatible with WPA being used
- TKIP (randomly refreshes encryption keys)

Question 5

QoS

Answer 5

QoS (quality of service)
- network protocol that prioritizes certain types of data (Voice, Video, Data), usually configured at configured at a switch
- used in private networks

Question 6

Common SOHO Security Issues

Answer 6

SSID - change default name
Physical Security - ensure router is in a safe location
Updating Firmware - do it inside the SOHO with the correct route update
Static IP - ensure it stays static

Question 7

Latency

Answer 7

Is the slow down in communication speeds

Question 8

Jitter

Answer 8

Us the slow down in communication speed due to
- congestion
- configuration issue
- interference

Question 9

Proxy Server

Answer 9

Is a server that routs all data flowing from a network to the internet through it self thus masking the IP address of the network.
Transparent Proxy - automatically intercepts data
Non-Transparent - requires user to set up IP address and proxy server

Question 10

UTM

Answer 10

Unified Threat Management
- a single appliance/gateway that preforms multiple security functions
- Firewall
- Intrusion Detection Service (IDS)
- anti-virus/anti-maleware
- Spam gateway
- Content filter
- Data leak Prevention (DLP)