CompTIA A+ 1101
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1.
Transmission
formal connection setup, "reliable" delivery, recovery
Control Protocol from error
2.
UDP
3.
File Transfer Pro- Port 21
tocol
4.
Secure Shell
Port 22 looks and acts the same as telnet
5.
Telnet
Port 23 Login to devices remotely
6.
Simple Mail
port 25. send email from device to mail server
Transfer Protocol
7.
Domain Name
System
8.
Hypertext Trans- Port 80 communication in the browser and by other apfer Protocol
plications -In the clear or encrypted
9.
Post Office Proto- Port 110. A standard for retrieving e-mail messages from
col 3
an e-mail server, To configure name and POP3 server
username password is needed
A protocol used on the internet for fast transmission of
information but with minimal error checking
Port 53. converts names into Ip addresses
10. Apple Filing Pro- Port 548. populates the available devices, File managetocol
ment copy, move, delete files
11. internet message Port 143. Receive emails from an email server.
access Protocol
12. Dynamic Host
Configuration
Protocol
Automated configuration of IP address, subnet mask and
other options. Port 67/68
13. Hypertext transfer protocol secure
Port 443
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14. Lightweight Directory Access
Protocol
Store and retrieve information in a network directory. Port
389
15. Remote Desktop Port 3389
Protocol
16. Simple Network Gather stats from network devices. Port 161/162
Management Protocol
17. NetBIOS
nbname, nbdatagram, nbsession
Port 137-139
18. server Message File sharing and printer sharing
Block and com- Port 445
mon internet file
system
19. Service Location Port 427
Protocol
•Find Mac OS services by name
20. Redundant Array What happens to data when the drive fails?
of Independent
Disks
21. RAID 0
Striping, No redundancy, High performance, split between two or more physical drives
22. RAID 1
Mirroring, duplicated between two or more physical drives, Every file is duplicated, High redundancy
23. RAID 5
Striping with parity- Requires at least three disks, Files
aren't duplicated, High redundancy
24. RAID 10
stripe of mirrors, The best of both worlds , Need at least
4 drives
25. Switches
Bridging done in hardware
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26. Unmanaged
Switches
Very few configuration, No VLANs
27. Managed Switch- VLAN support, Interconnect with other switches via
es
802.1Q
28. Patch Panels
-Combination of punch-down blocks and RJ-45 connectors
29. Ethernet over
Power
Power-line communication, 500 mbps
30. Power over Ether- Power provided on an Ethernet cable, Built-in power are
net
Endspans and In-line power injector are Midspans
31. Troubleshooting 1. Identify the problem.
steps
2. Establish a theory
3. Test the theory
4. Establish a plan
5. Implement the solution
6. Verify full system functionality
7. Document findings
32. Infrastructure as A cloud computing technology useful for heavily utilized
a Service
systems and networks.
33. Software as a Ser- purchase licenses for software that expire at a certain
vice
date.
34. Platform as a Ser- Provides cloud customers with an easy-to-configure opvice
erating system and on-demand computing
35. Internal cloud
- No resources are shared
- Build your own cloud
- Pay for everything up front
- No ongoing costs
36. External Cloud
- Share resources with a public cloud
- Underlying infrastructure owned by a third-party
- Cost may be metered or up front
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37. Rapid elasticity
A cloud computing service that is capable of scaling up
or down as a customer's need level changes.
38. On-demand
self-service
users can increase storage and processing power as
needed
39. Resource pooling Cloud computing services to multiple customers that are
hosted on shared physical resources
40. Virtual NIC
Connects a VM to a virtual switch,
Forwards the VMs network I/O in the form of Ethernet
frames to the virtual switch
41. Hypervisor
Software that creates and manages virtual machines
on a server or on a local computer. Also called virtual
machine manager (VMM).
42. OLED
Organic light emitting diode, no back light, no glass, more
power hungry
43. port replicator
an external device that provides connections to peripheral devices through ports built into the device, smaller than
docking station and doesn't have peripheral component
interconnect express interface card options.
44. Peripheral Com- a computer bus for attaching hardware devices in a component Intercon- puter.
nect
45. International Mo- identifies a physical mobile device
bile Station
Equipment Identity
46. International Mo- Identifies the user of a mobile network, allows access to
bile Subscriber
the wireless providers network to remain when swapping
Identity
Subscriber Identification Module cards
47. Microsoft Exchange
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A server application that can handle email, contacts, and
calendars and is a popular application used by large corporations for employee email, contacts, and calendars.
48. Product Release Allows phone to know how to use wireless network,
Instructions
updated over the air, radio settings
49. Preferred Roam- Allows phone to connect to tower, can be updated over
ing List
the air
50. Network Interface connects device to a network.
Card
51. Solid State Drive No moving parts, silent, fast access time, less latency
(SSD)
2.5 or 1.8 inch
52. Magnetic Drive
spinning drive platters, more info same price as SSD
53. smart card reader used to authenticate a person onto a network.
54. Optical Drive
A hardware device that uses lasers or light to read from,
and maybe even write to
55. Wireless Wide
Area Network
Cellular based wireless card that links electronic devices
over long distances, slower than Local Area Network,
(Point to point serial, MPLS)
56. Wireless Person- bluetooth card
al Area Network
57. Video Card
often built into processor because there isn't enough
room.
58. Mini Peripheral
all the way into slot .no copper showing, screw in, wire
Component Inter- antenna push on connector
connect installation
59. Liquid Crystal
Display
Any changes to native resolution may look blurry, light
shines through liquid crystals
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60. Alternating Current
A flow of electric charge that regularly reverses its direction, symbol is a squiggly line
61. Direct current
an electric current that flows in one direction steadily,
symbol is a solid line with a dash line underneath
62. Alternating Current Adapter
converts Alternating to direct current, input voltage is
110, 220 volts
63. Laptop WiFi Antennas
The wires wrap around the laptop screen at the highest
point
64. Cold Cathode Flu- Older laptop screens use to provide brightness
orescent Lamp
65. Inverter
A device that converts a direct current into an alternating
current, some laptops have them.
66. verifying backlight on laptop
use a flashlight, if not working need to replace LCD
inverter or display
67. augmented reali- the viewing of the physical world with computer-generatty
ed layers of information added to it Ex. special glasses
allow you to see an x-ray
68. Universal Serial
Bus (USB) C
24 pin, 10 Gbps
69. Lightning Cable
8 pin, Higher power output and durable than traditional
USB cable
70. Tethering
connect a device to your mobile phone, computer uses
USB connection, may require service or configuration by
wireless carrier
71. Near Field Communication
a very short-range wireless connectivity technology designed for cell phones and credit cards, Two way communication
72.
3.5mm jack allows wired headphone connectivity
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Tip Ring Ring
Sleeve
73. Secure Sockets
Layer
A protocol for managing the security of message transmissions on the Internet.
74. Secure Multipur- Encrypt and digitally sign
pose Internet
Mail Extensions
(S/MIME)
75. Apple Mail
only supports Internet mail access protocol 4
76. Baseband radio
processor
A network interface for your radio
isn't wifi or bluetooth
updated over the air
77. Virtual Private
Network
A private data network that creates secure connections,
over regular Internet lines
78. Router
Routes traffic between IP subnets, Local Area Network
Wireless Area Network
Copper
Fiber
79. wireless access
point
enables devices to connect to a wireless network to
communicate with each other, extends the wired network
onto the wireless network
80. Wireless Local
Area Network
Controllers
Centralized management of Wireless Access Points,
Used in hospitals and universities
81. Firewall
Block unauthorized access while permitting outward
communication, filters traffic by port number
82. hub
multiport repeater, 10 to 100 mb
83. cable modem
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provides high-speed Internet connections through the
cable Data Over Cable Service Interface Specification
television network. 4 to 250 mb Gb speeds are possible
84. Digital SubA device that sends and receives digital data to and from
scriber Line mo- computers over telephone lines (RJ11 connector)
dem
85. ADSL modem
10,000 ft limitation from central office, 52 mb downstream and 16 mb upstream (RJ11 connector)
86. bridge
Connects different physical networks
87. Quality of Service A feature of high end SOHO routers that changes the
(QoS)
priority of traffic
88. Highest Encryption
WPA2-AES, WPA2 over WPA, Wired Equivalent Privacy
is no good, use an open frequency
89. Media Access
allows or denies specific MAC addresses from connectControl Filtering ing to a network device.
90. Whitelisting
Nothing passes through firewall unless it's approved
91. Blacklisting
Nothing on this list is allowed, URLs, domains, and IP
addresses
92. Universal Plug
and Play (UPnP)
Allows network devices to automatically configure and
find other network devices
93. Network Address allows a private network address to communicate with a
Translation
legally registered IP address because IPv4 is exhausted
94. Port Fowarding
Also called destination or static Network Address Translation, Destination address is translated from a public IP
to a private one
95. Screened Subnet also known as Demilitarized Zone, ports can configure to
allow unrestricted access, bad idea, create more specific
port forwarding rules
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96. 802.11a
54Mbps, 5GHz
97. 802.11b
11 Mbps, 2.4 GHz, better range but more frequency
conflict than 802.11a
98. 802.11g
54 Mbps, 2.4 GHz, Backwards compatible with 802.11b
99. 802.11n
600 Mbps, 5GHz and 2.4GHz, 40 MHz mode and 4
multiple input multiple output (MIMO)
100. 802.11ac
1300 Mbps, 5GHz, up to 160 MHz of channel bandwidth,
8 Multi User Multiple Input Multiple output
101. Radio Frequency Identification
(RFID)
RF powers the tag, ID transmitted back, Mostly one way
communication
102. ZigBee
Uses Industrial, Scientific, Medicinal band—900 MHz or
2.4 GHz, Longer distances than bluetooth,
Internet of Things
103. Z-Wave
Uses Industrial, Scientific, Medicinal band—900 MHz,
Controls lights and locks
104. 3G
Several Mbps, allowed for GPS, Mobile TV, and VOD
105. 4G
supports download rates of 150 Mbps, Long Term Evolution-A download rates of 300 Mbps
106. 5G
Performance improvements at higher frequencies and
improved data transmission methods
107. Web Server
Web pages are stored on the server, delivers requested
webpages to your computer or mobile device
108. File server
Standard system of file management
109. Print Server
provide printing services for all network devices, Uses
server message block, Internet printing protocol, Line
Printer Daemon
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110. Proxy Server
intercepts internal user requests and then processes that
request on behalf of the user. Allows access control,
caching, URL filtering, content scanning
111. Security and Info Log aggregation and long term storage, Link diverse data
Event Managetypes, Forensic analysis
ment (SIEM)
112. Syslog
Standard for message logging, Write Once Read Many
drive technology
113. Unified Threat
Management
combines multiple security tools, including firewalls, virtual private networks, intrusion detection systems, and
web content filtering and anti-spam software
114. Intrusion Detection System
monitors network activities for attacks and produces reports to a management station
115. Intrusion Preven- software or hardware that monitors patterns in the traffic
tion System
flow to identify and automatically block attacks
116. Endpoint management server
Manage all devices from one pane of glass (one console), Requires an agent on the device
117. IPv4
0 to 255
118. IPv6
128-bit address assigned to hosts and represented in
hexadecimal format
119. Virtual Local Area Devices in the same broadcast domain, separated logiNetwork
cally, Use a single switch as if it is multiple switches
120. gateway
A node on a network that serves as a portal to other
networks.
121. subnet mask
In IPv4 addressing, a 32-bit number that, when combined
with a device's IP address, indicates what kind of subnet
the device belongs to.
122.
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Dynamic Host
Client Protcol
reservation
DHCP server issues a consistent IP address to a specific
MAC address
123. Link Local Address
The address that a computer running IPv6 gives itself
after first booting. The first 64 bits of a link-local address
are always FE80::/64.
124. Automatic Private range of 169.254.0.0 - 169.254.255.255, first and last
IP Addressing
256 addresses are reserved
125. dynamic address- assigning addresses where a computer is assigned a
ing
temporary address from an available pool of addresses.
126. static addressing assigning IP addresses by manually typing them into
client computers.
127. Dialup
Network with voice telephone lines, 56 kb modem, compression up to 320 kb
128. Fiber
Hundreds of HD channels, 1 Gb internet access, 1 terabyte of cloud storage, 2 terabyte DVR
129. Satellite network- High-cost, 50 mbps down, 3 mbps up, · High latency, 250
ing
ms up, 250 ms down, 2 GHz
130. Integrated SerBasic Rate Interface (2b+d), Two 64 kbit/s bearer (b)
vices Digital Net- channels, One 16 kbit/s signaling (d) Channel
work
131. Line-of-Sight ser- Visual path between antennas, high frequencies, metrovices
politan areas,
Worldwide Interoperability for Microwave Access
132. Local Area Network
A building or group of buildings, Ethernet and 802.11
wireless, Any slower and it isn't "local"
133. Wireless Mesh
Network
A self-configuring wireless network that is comprised
of wireless nodes that relay communication across the
network, reacts automatically to changes
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134. Cable crimper
Pinch connector onto wire (Coaxial, twisted pair, fiber),
Metal prongs are pushed through the insulation
135. Cable Stripper
A tool used to strip
the sheathing from copper cabling.
136. Multimeter
Check Alternating Current, Direct current voltages, continuity, battery power, wire mapping, and fuse status
137. Tone generator
and probe
locates cables, generator is placed at user end, probe is
waved around in the wiring closet to locate the connection. It will makes noise when it is near cable.
138. Loopback plugs
test physical ports, or fooling your applications, Serial/RS-232 (9 pin or 25 pin), Ethernet, T1, Fiber, not
cross-over cables
139. punch down tool used in a wiring closet to connect cable wires directly to
a patch panel.
140. WiFi analyzer
Identify errors and interference, Validate antenna location and installation
141. Ethernet category 100BASE-TX, 1000BASE-T standard, 100 meters sup5 and 5e
ported
142. Ethernet Catego- 10GBASE-T standard, 35-55 meters supported
ry 6
143. Plenum-rated ca- When there isn't air return duct work, Fire-rated cable
ble
jacket (FEP), Not as flexible as PVC cable but not toxic
when burning
144. Shielded Twisted Additional Shielding protects against interference, Shield
Pair
each pair and/or the overall cable, cable must be grounded
145. 568A Termination Pin assignment for 8P8C connectors
1 White/Green,
2 Green,
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3 White/Orange,
4 Blue,
5 White/Blue,
6 Orange,
7 White/Brown,
8 Brown
146. 568B Termination More common pin assignment for 8P8C connectors
1 Orange/white,
2 orange,
3 green/white
4 blue,
5 blue/white,
6 green,
7 brown/white,
8 brown
147. RG-6 Cable
Coaxial, used in television/digital cable, and high-speed
internet over cable
148. RG-59 Cable
Coaxial, used as patch cables not made long distances
149. Optical Fiber
Communication
Transmission by light, No RF signal (difficult to monitor
or tap and no radio/electrical interference), Transmit over
long distances
150. Multimode Fiber
· Short range communication
· 2 kilometers for 100 Mbps
· 550 meters for 10 GBPS
· Inexpensive light source-light emitting diode
151. Single Mode fiber · Long- range communication
· Over 80 km without additional processing
· Expensive light source- Laser beams
152. Video Graphics
Array Cable
· DB-15/DE-15 connector
· Blue color
-PC system design guide
· Analog signal
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-no digital
-image degrades after 5 to 10 meters
153. High-Definition
Multimedia
Interface Cable
All digital, no analog
· 20 meters distance before losing signal
· 19 pin (type A) connector
Mini- type c
154. Display Port Cable
· A royalty-free standard
· Data is sent in packetized form
· Like ethernet and Peripheral Component Interconnect
Express
· Compatible with HDMI and Digital visual interface
· Passive adapter
155. Digital Visual Interface Cable
· Single link; 3.7 Gbps (HDTV at 60 fps)
· Dual link; 7.4 Gbps (HDTV at 85 fps)
· DVI-Digital,
· DVI-Integrated Digital and analog in the same connector
156. thunderbolt cable Apple proprietary, · High-speed serial connector, Data
and power on the same cable
157. Universal Serial
Bus 1.1
1.5 to 12 mbps and 3 to 5 meters
158. Universal Serial
Bus 2.0
· 80 mbps, 5 meters
159. Universal Serial
Bus 3.0
· Super speed
· 5 Gbps, 3 meters
160. Serial Cable
Peripheral cable used for modems, printers, mice, networking
· Commonly used as a configuration port EX: D-Subminiature (Different sizes, A-E)
161. SATA Cable
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Serial Advanced Technology Attachment; Hard drive cable interface that uses serial signals to transfer information.
162. Integrated Drive 16 MBPS through 133 MBPS, (CD-ROM drives, etc.
Electronics Cable · Now called Parallel AT attachment
163. Small ComputHard drive cable, scanners, cd rom as well, string 8
er Systems inter- peripherals on narrow bus and 16 on wide bus
face Cable
164. Digital Visual In- electrically compatible, HDMI is backward-compatible
terface Digital to with DVI-D, No signal conversion required, No loss of
HDMI
quality
165. USB to Ethernet
-Some laptops don't have an Ethernet connection
-Convert USB to Ethernet
166. Digital Visual In- · Backward compatible with VGA
terface Digital to · Only 640x480 is officially supported
Video graphics
· VGA to DVI digital will need a converter
array
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