Chapter 18 - Understanding Network Scanners

Question 1

They inspect every packet on a network segment.

Tools like Microsoft’s free Network Monitor (NetMon) allow you to analyze network traffic. The full version provides stats on network usage and captures individual frames for deeper analysis.

Answer 1

Packet sniffers

Question 2

detects unwanted attempts to manipulate network systems and/or
environments

Answer 2

Intrusion Detection Software
(IDS)

Question 3

is a computer-security device that monitors network and/or system activities for any strange or malicious behavior.

Answer 3

Intrusion Prevention Software (IPS)

Question 4

identifies, detects, and reports attempts of unauthorized access to
the network

Answer 4

Intrusion Detection Software
(IDS)

Question 5

it can identify an attack and
report it, can also stop the
attack by shutting down ports or
drop- ping of certain types of
packets.

Answer 5

Intrusion Prevention Software (IPS)

Question 6

is a software tool designed to search a host for
open ports.

Answer 6

port scanner

Question 7

means the act of scanning for Transport Control
Protocol (TCP) and UDP open ports on a single target.

Answer 7

port scan

Question 8

TCP

Answer 8

Transport Control
Protocol

Question 9

means scanning multiple hosts on a network for a specific listening TCP or UDP port,

Answer 9

port sweeping

Question 10

Tools for evaluating the electrical performance and integrity
of cables in order to spot errors or miswiring.

Answer 10

Cable testers:

Question 11

is a device that sends signals through every copper wire in a wire map
check if the twisted-pair cable is attached to the right pin on the other end.

Answer 11

wire-map tester-

Question 12

is intended to examine a copper cable connection for simple installation
issues such as Crossed pairs, opens, and shorts.

Answer 12

continuity tester

Question 13

analyzes protocols.

Answer 13

Protocol analyzer:

Question 14

Devices used to verify and test network cable performance to make sure it satisfies industry requirements and standards.

Answer 14

Certifiers

Question 15

A tool for cable defect
detection that sends out a signal and times how long it takes for
the reflection to return, helping to pinpoint the issue

Answer 15

TDR (Time Domain Reflectometer)

Question 16

is a tool used to
detect the intensity and duration of reflected light in optical
fibers.

Answer 16

OTDR (Optical Time Domain Reflectometer):

Question 17

• also called a volt/ohm meter
  (VOM)
• is a multitasking electronic measuring instrument.

Answer 17

Multimeter

Question 18

is essentially a portable telephone that allows you to test
analog wet or dry lines
and is used to monitor those lines.

Answer 18

Butt Set

Question 19

Technique to attach connectors to network cables by pushing metal teeth into conductors.

Answer 19

Wire Crimping

Question 20

Tool used by network technicians for crimping connectors onto cables.

Answer 20

Wire Crimper

Question 21

Tool used to strip the cable before inserting wires into the connector for crimping.

Answer 21

Cable Stripper (Snips)

Question 22

AC

Answer 22

Alternating current

Question 23

• Device that monitors and logs voltage fluctuations in AC power, helping to identify deviations from normal line voltage (110V/60Hz in the U.S.).
• Prevents damage to PCs and network devices caused by voltage irregularities.

Answer 23

Voltage Event Recorder

Question 24

tracks heat levels in environments like server rooms to prevent device damage from overheating.

Answer 24

Temperature Monitor