12. Internet Connections Flashcards
What runs as a dial-up connection and is used on the public swithed telephone network, and what is the max bandwidth of dial-up modems?
Plain Old Telephone Service (POTS) | 53.3 kb/s
What supports multiple 64 Kbps channels and is an older technology designed to carry voice, video, or data over B (bearer) channels?
Integrated Services Digital Network (ISDN)
What form of DSL maximizes download speed and minimizes upload speed, and what are its max download & upload speeds?
Asymmetric DSL (ADSL) | Max download = 8 Mbps | Max upload = 1.544 Mbps
What are the mimimum download & upload speeds of Very High Bit-Rate DSL (VDSL)?
Download = 50 Mbps | Upload = 10 Mbps
What are the maximum distances to DSLAM for ADSL and VDSL, respectively?
ADSL = 18,000 ft | VDSL = 4,000 ft
What refers to specific frequency ranges used for upstream and downstream transmissions, and what are those ranges?
Data-Over-Cable Service Interface Specifications (DOCSIS) | Downstream = 50~860 MHz | Upstream = 5~42 MHz
What fiber connection runs the cable from an ISP access point to a curb?
Fiber To The Curb (FTTC)
What fiber connection connects directly to a building and to an optical network terminal (ONT)?
Fiber To The Premises (FTTP)
What is a device that converts optical signals to electrical signals?
Optical Network Terminal (ONT)
What cellular connection is used by the UMTS standard and could reach data speeds of up to 2 Mbps?
Wideband Code Division Multiple Access (WCDMA)
What cellular connection can reach speeds up to 14.4 Mbps and is sometimes referred to as 3.5G?
High Speed Packet Access (HSPA)
What cellular connection can reach speeds up to 50 Mbps and is sometimes referred to as 3.75G?
High Speed Packet Access Evolution (HSPA+)
What cellular connection has a max speed of 100 Mbps?
4G Long-term Evolution (4G LTE)
What cellular connection has a max speed of 1 Gbps?
LTE Advanced (LTE-A)
What are cellular connection frequencies operated in?
The millimeter wave band
What are the frequency and speed of 1G?
30 KHz | 2 Kbps
What are the frequency and speed range of 2G?
1800 MHz | 14.4~64 Kbps
What are the frequency range and speed range of 3G?
1.6~2 GHz | 144 Kbps ~ 2 Mbps
What are the frequency range and speed range of 4G?
2~8 GHz | 144 Mbps ~ 1 Gbps
What are the frequency range and speed range of low-band 5G?
600~850 MHz | 30~250 Mbps
What are the frequency range and speed range of mid-band 5G?
2.5~3.7 GHz | 1–~900 Mbps
What are the frequency range and speed range of high-band 5G?
25~39 GHz | Extremely high speed (in Gbps)
What three types of frequencies are used by microwave WISP connections?
Ultra-high (UHF), Super high (SHF), Extremely high (EHF)
