ScienceMathThe Bits And Bytes Of Computer Networking. Week 5: Connecting To The Internet
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The Bits And Bytes Of Computer Networking. Week 5: Connecting To The Internet

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24 July 2022
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question
Another term for POTS, or the Plain Old Telephone System, is _______________.
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Public Switched Telephone Network; POTS and PSTN refer to the same thing.
question
A baud rate is a measurement of the number of ______________________.
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bits that can be sent across a telephone line every second; A baud rate is equivalent to bits per second.
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.Question 1 T1 is short for __________.
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T1 is short for Transmission System 1
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How fast is a T1 line?
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A T1 communicates at speeds of 1.544 Kb/sec.
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Select all statements that are true of cable internet connections.
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they're shared bandwidth connections; A cable connection is a shared bandwidth connection. they're broadband connections; A cable connection is a broadband connection.
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WAN stands for ______________.
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WAN stands for Wide Area Network.
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In a WAN, the area between a demarcation point and the ISP's core network is known as ___________.
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A local loop; A local loop is the name for the area between a demarcation point and an ISP's network.
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A point-to-point VPN is also known as a ______________.
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site-to-site VPN; A point-to-point VPN can also be referred to as a site-to-site VPN.
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How many address fields does an 802.11 header have?
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4; There are four different address fields in an 802.11 header.
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Choose all of the frequencies that wireless networks typically operate on.
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2.4Ghz ; Many wireless networks operate on the 2.4Ghz frequency band. 5Ghz; Many wireless networks operate on the 5Ghz frequency band.
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The rate at which a dial-up connection can send data across a telephone wire is known as a _____ rate.
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baud; A baud rate is equivalent to bits per second.
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The more accurate name for a cable modem is a ______. POTS, DSLAM, CMTS, ONT
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DSLAM; Not quite. Please refer back to Lesson 3 for a refresher.
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A section of the radio spectrum that's been agreed upon to be used for certain communications is known as a _______.
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frequency band; Different locales might have different frequency bands defined.
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A traditional wireless network involving access points that all have wired connections is known as a(n) _______.
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WLAN; A WLAN is the term for a traditional wireless network.
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WPA2 uses a key that's ____ bits long.
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256-bit keys are pretty difficult to break.
question
Devices that connect to the Internet are often categorized into silos. Which silo controls network traffic?
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Switches and routers; Switches and routers are two of many devices that control network connectivity and traffic.
question
Cable Internet access can be described with which feature?
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Shared bandwidth ; Shared bandwidth means multiple users use the same connection. With cable Internet, many users (like in a city block) use the same line back to the ISP.
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An Internet connection problem for customers is found to be outside a carrier's regional office. As a result, which area needs troubleshooting?
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A local loop; A local loop is the portion of a network between a customer's demarcation point and the carrier or ISP facility.
question
An 802.11 frame contains a number of fields. Which field describes the version of 802.11 that is being used?
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frame control; The frame control field contains a number of subfields to describe the frame and processing. This includes the version of 802.11 being used.
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Which configuration is considered to be a common way to increase security in a wireless network?
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Media Access Control filtering; MAC filtering only allows certain devices to connect to a network
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Which form of Digital Subscriber Line (DSL) features differing upload and download speeds?
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ADSL; Asymmetric Digital Subscriber Line (ADSL) connections feature different speeds for outbound and incoming data.
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Which connection technology uses what is known as a CMTS?
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Cable Internet; The Cable Modem Termination System (CMTS) connects lots of different cable connections to an ISPs core network.
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What are two characteristics of a 5Ghz band wireless network? Check all that apply.
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fast speeds; A wireless network that operates with a 5Ghz frequency offers greater speeds than that of a 2.4Ghz network. short range; A wireless network that operates with a 5Ghz frequency has a much shorter range than that of a 2.4Ghz network.
question
An IT suspects that an unauthorized device is connected to a wireless network. This is a result of passkey sharing on a device brought from home. What is put in place to stop such activity? WiFi Protected Access 2 (WPA2), Channel overlap, collision domain, media access control (MAC) filtering
answer
WPA2; Incorrect Not quite. Please review the videos in the "Wireless Networking" module for a refresher.
question
Television broadcasts were originally delivered by using which technology?
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Wireless; Television has historically moved in the opposite direction of networking as broadcasts were sent and received with antennas.
question
Which value once represented a very popular modem baud rate that was used with dial-up connections? 1970, 1990, 110, 14400
answer
110; Not quite. Please review the videos in the "POTS and Dial-up" module for a refresher.