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Comptia network + > 5.2 - Hardware Tools > Flashcards

5.2 - Hardware Tools Flashcards

1
Q

Hardware Tools

A
  • Cable crimper
  • Cable tester
  • Punch-down Tool
  • TDR / OTDR
  • Light meter
  • Toner Probe
  • Loopback plug
  • Multimeter
  • Spectrum analyzer
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2
Q

Cable crimper

A
  • ”Pinch” the connector onto the wire
  • The final step of a cable installation
  • Metal prongs push through insulation
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3
Q

Cable tester

A

Continuity testing
Identify missing pins, crossed wires
Not used for advanced testing

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4
Q

Punch-down Tool

A

Forces wire into a wiring block

Trims the wires and breaks the insulation

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5
Q

TDR / OTDR

A

(Optical) Time Domain Reflectometer• Estimate fiber lengths, measure signal loss, determine light reflection, create wire maps• May require additional training

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6
Q

Light meter

A

Send a light from one side• Measure the light power on the othe

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7
Q

Toner Probe

A

Puts an analog sound on the wire• Inductive probe doesn’t need to touch the copper

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8
Q

Loopback plug

A

• Useful for testing physical ports• Serial, Ethernet, T1, fiber• These are not crossover cables

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9
Q

Multimeter

A

AC/DC voltages• Continuity, wire mapping

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10
Q

Spectrum analyzer

A

View the frequency spectrum• Identify frequency conflicts

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11
Q

Software Tools

A

Protocol analyzer
Network / port scanner
Wireless packet analysis
Speed test sites

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12
Q

Protocol analyzer

A

Capture and display network traffic• Use a physical tap or redirect on the switch

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13
Q

Network / port scanner

A

• Scan for open ports and IP addresses• Visually map the network• Rogue system detection

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14
Q

Wireless packet analysis

A

View wireless information• Signal-to-noise ratio, channel information, etc.

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15
Q

Speed test sites

A

Bandwidth testing• Pre- and post-change analysis• Not all sites are the same

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16
Q

Command Line Tools

A
  • ping - Test reachability
  • traceroute - Determine the route a packet takes to a destination
  • nslookup and dig - Lookup information from DNS servers
  • ipconfig and ifconfig - View and manage IP configuration
  • iptables - Packet filtering
  • netstat - Display network statistics
  • tcpdump
  • Nmap
  • route - View the device’s routing table
  • arp - Address resolution protocol information
17
Q

ping - Test reachability

A

• ping - Test reachability to a TCP/IP address• ping -t - Ping until stopped with Ctrl-c• ping -a - Resolve address to a hostname• ping -n - Send # of echo requests• ping -f - Send with Don’t Fragment flag set

18
Q

traceroute

A

Takes advantage of ICMP Time to Live Exceeded error message• Not all devices will reply with ICMP Time Exceeded messages• traceroute

19
Q

nslookup

A

nslookup • dig

20
Q

ipconfig and ifconfig

A

ipconfig - Windows TCP/IP config
• ipconfig /all - Display all IP configuration details
• ipconfig /release - Release the DHCP lease
• ipconfig /renew - Renew the DHCP lease
• ipconfig /flushdns - Flush the DNS resolver cache• ifconfig - Linux interface configuration

21
Q

iptables - Packet filtering

A

Linux iptables - filter packets in the kernel
• Simple data blocks - ignores state
• Usually placed on a device or server

22
Q

netstat - Display network statistics

A

netstat -a - Show all active connections• netstat -b - Show binaries• netstat -n - Do not resolve names

23
Q

tcpdump

A

tcpdumpCapture packets from the command line• Available in most Unix/Linux operating systems• Included with Mac OS X, available for Windows (WinDump)• Apply filters, view in real-time• Written in standard pcap format

24
Q

pathping - Combination of ping and traceroute

A

pathping

25
Q

Nmap

A

Network mapper - find network devices• Port scan - Find devices and identify open ports• Operating system scan• Discover the OS without logging in to a device• Service scan• What service is available on a device? Name, version, details• Additional scripts• Nmap Scripting Engine (NSE

26
Q

route - View the device’s routing table

A

route print - View the Windows routing table

27
Q

arp

A

• arp -a - View the local ARP table

Comptia network + (26 decks)

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