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comptia 1001 > Mobile Devices > Flashcards

Mobile Devices Flashcards

1
Q

Hard Drive
SSD(Laptops)

A

Solid State Drive - Lower temps, no moving parts, no noise, .1ms access time, 5% failure rate, less storage but more money to pay if want more storage.

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2
Q

Hard Drive
HDD(Laptops)

A

Hard Disk Drive - hot, high power, moving parts, more noise, 5.5 - 3.0 ms, 2-5% failure, more storage, cheaper. Also Non-volitile meaning info retained after power is off

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3
Q

Memory
RAM(Laptops)

A

Random Access Memory - very fast, volitile which means power is required to maintain the stored info.

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4
Q

DC Jack(Laptops)

A

Where power comes from motherboard

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5
Q

Batteries(Laptops)

A

many now are lithium-ion and lithium polymer now.

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6
Q

LCD(Laptops)

A

Liquid Crystal Display - connects to motherboard via ribbon , light, thin, backlight, bright

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7
Q

OLED(Laptops)

A

Organic light emitted diodes - cheaper than LED, best black levels, light, diode supplies light.

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8
Q

LED(Laptops)

A

Light emitting diode - use less power than lcd and thus more efficient, lcd is better than oled if you want more brightness.

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9
Q

Wifi antenna(Laptops)

A

Located around the screen

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10
Q

Inverters

A

converts direct current(dc) comes from motherboard too AC. to be used by backlight. cause for flickering or dimming

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11
Q

Tablets

A

portable, good battery, no high processing, touch screen.

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12
Q

Smartphones

A

portable, common, good battery, less powerful than a laptop, small screen

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13
Q

Wearable Devices

A

popular, smart watch, small task/ little processing

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14
Q

Connection Type

A

USB, Micro USB, Mini USB, USB C, Lighting Cable

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15
Q

Tethering

A

allows desktop computer or laptop to share the mobile devices internet connection.

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16
Q

NFC

A

t’s a way to send small amounts of data between devices that are located very close to each other.

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17
Q

Mobile Hotspot

A

Let people connect to your phone and use your internet connections via 802.11

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18
Q

POP3

A

Post Office Protocol - store and retrieve emails from a server to the client. Only one device connectivity. original port:110 default port:995. Outlook

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19
Q

IMAP

A

internet message access protocol - store and retrieve your emails from a server to the client. folder creation, multiple devices can retrieve information. yahoo or google. original port: 143 default port: 993

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20
Q

S/MIME

A

Secure/multipurpose internet mail extensions - digitally signed and encrypted messages

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21
Q

PRI Update

A

Product Release Information - contains radio settings, which might be ID numbers, network codes, country codes, and other important information that allows your phone to connect to the right mobile provider’s network.

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22
Q

PRL Update

A

Preferred Roaming List - connects proper cell phone towers while roaming.

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23
Q

Baseband Updates

A

update of the “sub os” that manages wireless comm.

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24
Q

Radio Firmware

A

controls the parameters of your cellular and/or Wi-Fi signal. When problems exist with the device connections, a firmware upgrade often resolves the issue. Not an ‘OS’ update.

25
Q

IMEI

A

each mobile device, such as phones or tablets, on the planet has to have a unique hardware identifier. that identifier is a number that is unique worldwide and assigned by the manufacturer.

26
Q

IMSI

A

is assigned to the user or cellular subscriber. This number will be assigned by your service provider and stored on your device’s SIM card, making it portable.

27
Q

VPN

A

Virtual Private Network - useful in the mobile environment. They provide highly secure connections from unlikely locations, basically anywhere with cellular service. By providing a secure tunnel for your connection, its integrity and security are assured.

28
Q

SMTP

A

Simple Mail Transfer Protocol - when an email is sent from email to email client, first goes to smtp server then sent off. og port 23 ssl or tls encrytped session: 587 0r 465

29
Q

Magnetic Disk

A

Moving parts, uses actual mechanical disk and an arm with a read/write head to store data

30
Q

Laptop Memory

A

SODIMM

31
Q

FTP

A

File Transfer Protocol - transfers files between systems. port 20(active mode data) and 21(control)
example: like filezilla

32
Q

SSH

A

Secure Shell - remote connections to server or networking devices. more secure replacement for FTP and telnet. port 22(like 2 s’s) open

33
Q

Telnet

A

remote access to other host using the command line interface. unsecure plain text. port 23 but is insecure.

34
Q

DNS

A

Domain Name System - translates domain names to IP addresses, does it so computer and web server communicates through IP. port: 53

35
Q

HTTP

A

Hypertext transer protocol - used to surf web, not as secure as https. default port is 80

36
Q

HTTPS

A

used to surf web, securer than http. default port is 443

37
Q

RDP

A

Remote Desktop Protocol - used to remote connect to server or desktop. original port 3389

38
Q

NetBios/NetBt

A

used to talk over LAN, used windows for file/printer share. allows apps to talk over LAM aswell. Port 137-139

39
Q

SMB/CIF

A

server message - provides access to shared items such as files and printers. port number 445

40
Q

SLP

A

Service Location protocol - allows comptuers and other devices to find services in a local area network without prio config. port 427

41
Q

AFP

A

Apple filing protocol - file services for mac computers running macOS. allowing for transfer of files across the network.
port 548

42
Q

DHCP

A

Dynamic Host Configuration - automatically assign IP address to hosts. hosts can be like computers, and printers. small places uses dhcp.
port: 67 and 68

43
Q

LDAP

A

lightweight directory access protocol - access and maintain distributed directories of information. stores username and passwords. port 389 secure port 636.
example: microsoft active directory

44
Q

SNMP

A

Simple network management protocol - standard for managing and monitoring a device on your network. port 161 and port 162

45
Q

Routers

A

moving data from one network to another network

46
Q

switches

A

device where all computers connect to it in a wired fashion.

47
Q

access point

A

devices to connect to wireless network

48
Q

cloud based network controller

A

software that provides for centralized management, configuration, and monitoring of a computer network.

49
Q

firewall

A

Any hardware or software that protects a computer from unwanted intrusions.

50
Q

Network interface card

A

is a network adapter or a physical device that can be added to a computer or a network device that has an open and compatible slot.

51
Q

Repeater

A

lengthen a signal further that it was originally suppose to go

52
Q

Hub

A

creates a simple shared phical connection that all computers use to send data

53
Q

cable/dsl modem

A

device that allows computer to have

54
Q

Hub

A

creates a simple shared phical connection that all computers use to send data

55
Q

patch panel

A

device that acts as a terminator point for all the network cables in a the building.

55
Q
A
56
Q
A
57
Q
A
58
Q
A

comptia 1001 (1 decks)

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