Network Monitoring

Question 1

Common Network devices

Answer 1

• Routers
• Switches
• Firewalls
• Servers

Question 2

Why Monitor a Network?

Answer 2

• Networks are the essence of an IT infrastructure
• They operate in dynamic environments with constant changes and adaptations
• monitoring reduces network issues
• it identifies the root cause of an issue before users are affected

Question 3

Network Operations Center

Answer 3

The NOC monitors and manages the entire IT infrastructure. It has Backup and storage management capabilities

Question 4

Network Monitoring Functions

Answer 4

Discover
Map
Monitor
Alert & Report

Question 5

What is SNMP?

Answer 5

Application-layer protocol that allows devices on a network to share information

Question 6

Nagios

Answer 6

Monitors enterprise IT infrastructure with graphs and visualization and SNMP trap support

Question 7

Deep Packet Inspections (DPI)

Answer 7

Allows real time packet payload inspection

header includes packet transfer information

Question 8

Shallow Packet Inspection (SPI)

Answer 8

Inspects only packet headers

Question 9

Medium Packet Inspection (MPI)

Answer 9

compares data with a list of specific packet and data format types

Question 10

Deep Packet Inspections

Answer 10

Inspects all traffic from a specific IP address

Question 11

Protocol Analyzer

Answer 11

allows traffic capture & displays on an interface

can distinguish between different protocols