A+ Flashcards
1
Q
4 pieces of hardware POST needs to be successful
A
motherboard, power supply, CPU, RAM
2
Q
Role of TPM
A
trusted platofrm module: hardware security feature for secure boot-up and provides encryption
3
Q
HSM
A
hardware security module: generates and stores crypto keys
4
Q
drawbacks of overclocking
A
more heat, shorter lifespan
5
Q
Thunderbolt 3 cable range and speed
A
1.6ft max and 40Gbps
6
Q
SATA port description on motherboard and role
A
L-shaped, for attaching storage
7
Q
SATA 1 speed
A
1500Mbps
8
Q
SATA 2 speed
A
3000Mbps
9
Q
SATA 3 speed
A
6000Mbps
10
Q
eSATA role
A
external storage
11
Q
eSATA 2 speed
A
3Gbps
12
Q
eSATA 3 speed
A
6Gbps
13
Q
IDE/PATA cable description and purpose
A
flat ribbon, for CD drives and whatnot
14
Q
MOLEX description
A
4 pins that connect a power supply to a device
15
Q
SCSI device and speed
A
legacy drive for daisy chaining devices, 320Mbps
16
Q
Six qualities of cloud computing
A
high availability, scalability, elasticity, metered utilization, shared resources, file sync
17
Q
examples of public cloud
A
Google Drive, Office 365, iCloud
18
Q
describe a private cloud
A
company cloud and can access only what’s on same cloud
19
Q
describe a community cloud
A
resource sharing, cost effective but not most secure
20
Q
describe a multitenancy cloud
A
users share computing resources, cheap but insecure
21
Q
describe a single tenancy cloud
A
assign particular resources to a single organization
22
Q
pros and cons of on-premise cloud service model
A
costly, needs lots of staff, hardware, software, and a site, but provides lots of control and security
23
Q
examples of SaaS
A
office 365, Google docs, TurboTax
24
Q
PaaS
A
hardware and such but no apps
25
Iaas
just hardware, network, and storage
26
DaaS
virtual desktop
27
VDI pros and cons
Virtual Desktop Infrastructure: server does all the hard work and great for security, but screwed if server goes down
28
CDN and its 3 benefits
content delivery network; network of servers, great speed and redundancy and availability
29
SDN and its two benefits
software defined network; software that makes it easy to change via automatic or orchestration; great for scalability
30
2 benefits of RISC ARM processor
great battery life, less heat
31
PCI specs
? bits ? speed
32 bits 133Mbps
32
PCI-X 1.0 specs
? bits ? speed
64bits 133MHz
33
PCI-X 2.0 specs
? bits ? speed
64 bits 533MHz
34
describe riser card and purpose
plugs into motherboard; provides more expansion slots perpendicular to board
35
three microwave connections in order of speed slowest to fastest frequency
UHF, SHF, EHF
36
kensington lock
laptop lock plugged into port and anchored to a spot
37
MDM term and definition
mobile device management; controls device policies
38
MAM term and definition
mobile application management; controls the app/data via an app
39
difference between geotracking and geotagging
track location over time vs tag location of photos
40
encrypted port for IMAP
993
41
encrypted port for POP3
995
42
encrypted port for SMTP
465
43
LCD definition and how it works
liquid crystal display; backlight through transistors
44
LED/OLED definition and how it works and benefits
light-emitting diodes; last longer than LCD, better quality images, better performance
45
digitizer
accepts touch input
46
accelerometer
measures movements on X and Y axes
47
gyroscope
measures movements on X, Y, and Z axes, and provides image stabilization
48
port replicator vs docking station
replicates laptop without having to plug in everything; docking station is a replicator and adds more options
49
ATX motherboard size
full
50
mini-ATX motherboard size
smaller version of ATX with all the same features
51
micro-ATX motherboard
smallest ATX with only 4 expansion slots
52
ITX motherboard and where found
1 expansion slot; smart TVs, speakers, phones, etc
53
Class A Network's first octet, subnet mask
1-127; 255 0 0 0
54
Class B Network's first octet, subnet mask
128-191; 255 255 0 0
55
Class C Network's first octet, subnet mask
192-223; 255 255 255 0
56
Class D Network's first octet, subnet mask
224-239; n/a
57
Class E Network's first octet, subnet mask
240-255; n/a
58
role of CIDR
allows of borrowing of IPs
59
role of NAT
turns a private IP into a public IP
60
Private IPs numerically
10, 172.16-172.31, and 192.168
61
2 purposes of loopback address
troubleshooting and testing
62
IP assignment process
DORA, discover, offer, request, ack
63
FTP ports
20, 21
64
SSH port
22
65
Telnet port
23
66
SMTP port
25
67
DNS port
53
68
DHCP ports
67, 68
69
HTTP port
80
70
POP3 port
110
71
NetBIOS ports
137, 139
72
IMAP port
143
73
SNMP ports
161, 162
74
LDAP port
389
75
HTTPS port
443
76
SMB port
445
77
RDP port
3389
78
the 5 remote access servers
Telnet, SSH, RDP, VNC, TTY
79
purpose of SNMP
network monitoring
80
define ACL
access control list on firewall
81
role of firewalls
packet filtering
82
role of UTM
multiple devices in one for threat management
83
ICS/DCS vs SCADA
ICS/DCS physically controls devices vs SCADA operates ICS via software
84
PAN range
10ft
85
LAN range
100ft
86
CAN range
40-100m
87
MAN range
25 miles
88
WAN range
worldwide
89
purpose of SAN
storage area network
90
cat5 speed and range
100Mbps; 100m
91
cat5e speed and range
1000Mbps; 100m
92
cat6 speed and range
10Gbps; 55m
93
cat6a speed and range
10Gbps; 100m
94
cat8 speed and range
40Gbps, 30m
95
coaxial cable spec and connector type
rG-59, F-type
96
USA voltage vs European voltage
120 vs 239
97
voltage ratings for power supplies
3.3, 5, 12
98
image drum
creates image to be applied to paper
99
fuser assembly
heats and melts toner
100
transfer roller/belt
transfers image from drum to paper
101
pickup roller
grabs paper and feeds it through
102
paper separation pad
ensures you grab one page at a time
103
seven steps of laser printing
processing > charging > exposing > developing > transferring > fusing > cleaning
104
what smearing indicates in a laser printer
fuser assembly issue
105
sign you ran out of printer memory
half blank page
106
sign of a feed roller issue in laser printer
grabbing more than one paper
107
sign of dirty inkjet print heads and how to fix
missing lines or colors; run through cleaning cycle
108
sign you need to recalibrate inkjet printer
skewed output
109
sign of worn out printhead in impact printer and how to fix
seeing holes in image; replace the printhead
110
purpose of PDL
page description language; creates printing map printer can understand
111
the two generic PDLs
PCL and postscript
112
role of print spooler
manages print job order
113
the 3 HDD sizes
2.5, 2.5 and 5.25
114
4 HDD RPMs
5400, 7200, 10K, 15K
115
HDD vs SSD
HDD: cheaper, higher storage capacity
SSD: higher performance, faster, more reliable
116
SSD sizes
2.5, 1.8, M.2
117
CD storage capacity
700MB
118
DVD storage capacity
8.4 or 4.7GB
119
Blu-ray (BD) storage capacity
2-50GB
120
3 sizes RAM comes in
8, 16, 32
121
role of ECC
error correcting code; detect and correct errors
122
how to troubleshoot a faulty power button on computer
open up computer and reseat on motherboard
123
how to check for a faulty outlet
use multimeter
124
how to check if a power cable to the computer is faulty
use multimeter to test if it has greater than 0 ohms
125
how to test if power cables running from power supply are faulty
test with multimeter for greater than 0 ohms
126
what is BSOD
blue screen of death
127
two other terms for BSOD
pinwheel of death and kernel panic
128
5 signs of cooling issues
computer locks up
high rpm fans
unresponsive computer
shutdowns
reboots
129
what to do when you have a blood capacitor
replace motherboard
130
six steps of troubleshooting methodology
identify the problem
establish a theory
test the theory
establish a plan of action
verify full system functionality
document findings
131
what kind of network issue is it when the NIC like isn't on?
physical
132
4 possible reasons for a network slowdown
mismatch in duplex settings
mismatch in speed settings
outdated network adapter
malware infection
133
3 reasons for wireless connectivity issues
signal interference
low signal strength
source signal standards mismatch
134
3 questions to ask when having network connectivity issues
affecting one client?
affecting a network segment?
affecting entire network?
135
what to do when your computer doesn't detect a printer wire
replace cable, try another cable, or try another computer with same cable
136
2 reasons why and what to do when computer can't wirelessly connect to printer
printer may not be getting DHCP
wireless signal may be too weak
power cycle on
137
3 reasons for paper jam
debris in feeder
wrong page setting
feeder worn out
138
signs ink carriage gears are warn out and how to fix it
grinding noise and garbled prints; replace em
139
reasons for faded printout
in draft mode
running out of ink/toner
140
reasons for blank pages
software issue
ink/toner install done wrong
141
reason for white stripes and what to do
cartridge drum issue/dirty (give it a shake)
142
reason for black stripes
primary charge roller is dirty or damaged
power to developer may be malfunctioning (troubleshoot the corona wire or replace the drum/toner cartridge
143
reason for speckling and what to do
loose toner; use correct vacuum
144
reason for vertical or horizontal lines
dirt feed rollers or photosensitive drum
145
reason for toner not fusing to paper and what to do
not getting hot enough; check voltage
146
echo/ghost/double image
replace toner drum
147
reason for incorrect chroma display and what to do
someone messed up ink install or software issue; update driver or fix cartridges
148
reasons for missing colors and what to do
out of ink/toner or there's a clog; run clean cycle
149
reason for white lines in inkjet and what to do
dirty or blocked printhead; replace it
150
what to do if you encounter a boot issue
check boot order in BIOS
make sure it's fully plugged in
make sure it's getting enough power
151
what to do when your HDD starts clicking/grinding
back up immediately and replace
152
role of SMART
self monitoring analysis tool
153
2 possible reasons for drive performance going down
needs to be defragged (HDD only)
have a bottleneck issue due to hardware or software
154
signs you have a single disk failure in a RAID and what to do
slower speed; replace and rebuild ASAP
155
sign of full RAID failure and what to do
entire array stops working; restore from a backup, reconfig, and rebuild
156
first thing to check if you have a dim image
brightness and contrast settings
157
how to check if you have a dead pixel
move your mouse over it
158
5 resources you need for VMs
CPU, system memory, storage, network, SLAT
159
802.11a standards
5GHz, 54Mbps
160
802.11b standards
2.4GHz, 11Mbps
161
802.11g
2.4GHz, 54Mbps
162
802.11n standards
both GHz, 150Mbps/600Mbps
163
802.11ac standards
5GHz, 6.9Gbps
164
802.11ax standards
2.4/5/6GHz, 9.6Gbps
165
most dangerous type of threat to a VM
???
166
