Week 5 - Connecting to the Internet Flashcards

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Questions and Answers

What does POTS stand for?

Plain Old Telephone Service

What does PSTN stand for?

Public Switched Telephone Network

What is a Dial-Up Connection?

Uses POTS for data transfer and gets its name because the connection is established by actually dialing a phone number.

What does Modem stand for?

Modulator/Demodulator Signup and view all the answers

What is Baud Rate?

A measurement of how many bits can be passed across a phone line in a second. Signup and view all the answers

Another term for POTS, or the Plain Old Telephone System is?

Public Switched Telephone Network Signup and view all the answers

A baud rate is a measurement of the number of?

Bits that can be sent across a telephone line every second Signup and view all the answers

What is Broadband Internet?

Any connectivity technology that isn't dial-up internet. Signup and view all the answers

What are T-Carrier Technologies?

Originally invented by AT&T to transmit multiple phone calls over a single link. Signup and view all the answers

How fast is a T1 line?

1.544 megabits per second Signup and view all the answers

What does DSL stand for?

Digital Subscriber Line Signup and view all the answers

What is ADSL?

Asymmetric Digital Subscriber Line Signup and view all the answers

What is SDSL?

Symmetric Digital Subscriber Line Signup and view all the answers

What is Cable Broadband?

Sending frequencies that don't interfere with television broadcast over coaxial cables. Signup and view all the answers

What is Optical Network Terminator (ONT)?

Converts data from protocols the fiber network can understand to those that traditional, twisted pair copper networks can understand. Signup and view all the answers

What are the most common WiFi frequency bands?

2.4 Ghz & 5Ghz Signup and view all the answers

Choose all of the frequencies that wireless networks typically operate on:

5Ghz Signup and view all the answers

What does WPA stand for?

Wi-Fi Protected Access Signup and view all the answers

What does WPA2 stand for?

Wi-Fi Protected Access 2 Signup and view all the answers

What is MAC Filtering?

You configure your access points to only allow for connections from a specific set of MAC addresses belonging to devices you trust. Signup and view all the answers

The original and flawed wireless security protocol is known as?

WEP Signup and view all the answers

What are two characteristics of a 5Ghz band wireless network?

Short range, Fast speeds Signup and view all the answers

What does a WLAN act as to a wired network?

Gateway Signup and view all the answers

An Internet connection problem found outside a carrier's regional office requires troubleshooting of which area?

Local loop Signup and view all the answers

Study Notes

Telecommunications Concepts

POTS (Plain Old Telephone Service): Represents traditional analog telephone service.
PSTN (Public Switched Telephone Network): The global network that connects telephones via circuit switching.
Dial-Up Connection: Utilizes POTS, where a phone number is dialed to establish a connection for data transfer.
Modem: Modulator/Demodulator device converting digital data to analog signals for transmission over POTS.
Baud Rate: Indicates the number of bits transmitted per second over a telephone line.

Internet Connection Types

Broadband Internet: Any connection technology faster than dial-up, providing always-on connectivity.
T-Carrier Technologies: Initially for transmitting multiple calls over one link, now used for faster data transfer.
T1 Line: A specific type of T-carrier capable of transferring data at 1.544 megabits per second.
T3 Line: Consists of 28 T1 lines, providing a total speed of 44.736 megabits per second.

Digital Subscriber Line Technologies

DSL (Digital Subscriber Line): High-speed Internet transmission using existing telephone lines for simultaneous internet and phone service.
ADSL (Asymmetric DSL): Offers higher download speeds compared to upload speeds.
SDSL (Symmetric DSL): Provides equal bandwidth for upload and download.
DSLAMs (DSL Access Multiplexers): Devices that manage multiple DSL connections.

Cable Internet

Cable Broadband: Internet access through cable television infrastructure, allowing high-speed data transmission.
Cable Modem: Connects consumer networks to the cable modem termination system (CMTS).
CMTS: Manages multiple cable connections distributing internet service to users.

Fiber Optic Technologies

FTTX (Fiber to the X): General term for various fiber-based connections.
FTTH (Fiber to the Home): Fiber cables are extended directly to individual homes.
FTTB (Fiber to the Building): Fiber is delivered to a building, typically utilizing copper for internal connections.
ONT (Optical Network Terminator): Converts fiber protocols for compatibility with traditional networks.

Network Types

WAN (Wide Area Network): Connects multiple locations, allowing data transfer across various sites.
Local Loop: The segment between the customer’s premises and the ISP's core network in a WAN.
Point-to-Point VPN: Establishes private communication between two sites over the internet.

Wireless Networking

Wireless Networks: Networking that eliminates the need for wired connections, utilizing radio waves.
IEEE 802.11: The standard that governs wireless Ethernet (Wi-Fi), covering multiple frequencies.
Wireless Access Point (WAP): Connects wired and wireless networks, facilitating data transfer.
Channels: Divisions within a frequency band that help reduce interference and collisions.

Security Protocols

WEP (Wired Equivalent Privacy): An outdated and weak wireless security protocol using a 40-bit key.
WPA (Wi-Fi Protected Access): An improved security protocol with a stronger 128-bit key.
WPA2: An enhancement of WPA utilizing a 256-bit key for better security.
MAC Filtering: Restricts network access to specific devices based on their MAC addresses.

Miscellaneous Networking Concepts

Ad-hoc Networks: Simple networks where devices connect directly without infrastructure.
Mesh Networks: A combination of ad-hoc and WLANs allowing multiple connections for redundancy and coverage.
Collision Domain: Areas in a network where packet collisions can occur; effectively managed in wired networks by switches.

General Knowledge

Frequency Band: A portion of the radio spectrum designated for specific communications; vital for wireless networking efficiency.
USENET: An early internet communication system established during the dial-up era.
Wireless Channels: Channels such as 1, 6, and 11 in Wi-Fi that do not overlap, maximizing performance.

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Description

Test your knowledge with these flashcards covering key terms related to internet connectivity from Week 5. Learn about concepts like POTS, PSTN, dial-up connections, and modems. Perfect for reinforcing your understanding of how the internet works!