1.6 Wireless / Cellular Data Network (Connectivity) Flashcards
What are three features on a phone that you can enable/disable?
- Hotspot
- Tethering
- Airplane mode
What is the typical range for Bluetooth?
10m
How does your phone make calls?
Baseband Radio Processor
What does PRL stand for?
Preferred Roaming List
What does PRL do?
Allows phone to be connected to the correct tower.
What does PRI stand for?
Product release instructions
How are PRLs and PRIs updated?
OTA (over-the-air)
What is an IMEI? What does it identify?
International Mobile Station Equipment Identity ; identifies a mobile device.
What is an IMSI? What does it identify?
International Mobile Subscriber Identity ; identifies a device user.
What is a VPN? What does it do?
Virtual Private Network ; enables secure communication, integrated into phone
Which protocol(s) would you use to retrieve email?
POP3 or IMAP
Which protocol(s) would you use to send email?
SMTP
What does POP3 stand for?
Post Office Protocol 3
What option does POP3 give after downloading message?
Delete message from server.
Where is a message downloaded from with the POP3 protocol?
From the ISP’s account
What is the default POP3 network port #?
tcp/110
What is the Secure Socket Layer (SSL) channel POP3 network port #?
tcp/995
What does IMAP4 stand for?
Internet Message Access Protocol 4
Where does the IMAP4 protocol access mail from?
A central server
What features does IMAP4 provide that POP3 does not?
- Mail folders
- server-side searching
What is the default IMAP4 network port #?
tcp/143
What is the Secure Socket Layer (SSL) channel IMAP4 network port #?
tcp/993
What does SMTP stand for?
Simple Mail Transfer Protocol
Where does the SMTP protocol send mail from and to?
FROM a trusted or local device to an incoming mail server (NOTE: STMP
