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The World Wide Web: Crash Course Computer Science #30

  Classroom Resource Information  

Title:

The World Wide Web: Crash Course Computer Science #30

URL:

https://aptv.pbslearningmedia.org/resource/world-wide-web-crash-course-cs/world-wide-web-crash-course-cs/

Content Source:

PBS
Type: Audio/Video

Overview:

The World Wide Web is built on the foundation of simply linking pages to other pages with hyperlinks, but it is this massive interconnectedness that makes it so powerful. But before the web could become a thing, Tim Berners-Lee would need to invent the web browser at CERN, and search engines would need to be created to navigate these massive directories of information.

Content Standard(s):
Digital Literacy and Computer Science
DLIT (2018)
Grade: 9-12
21) Explain how technology facilitates the disruption of traditional institutions and services.

Examples: Digital currencies, ridesharing, autonomous vehicles, retail, Internet of Things.

Unpacked Content
Evidence Of Student Attainment:
Students will:
  • explain the impact of technology of traditional institutions and services.
Teacher Vocabulary:
  • uber
  • rideshare
  • digital currencies
  • retail
  • college
  • university
Knowledge:
Students know:
  • that is important to assess the economic impact of technology on tradition institutions and services.
Skills:
Students are able to:
  • identify technology changes in everyday life that have changed how people interact with the world (example: music on CD and radio
  • > streaming music services like Spotify and XM satellite radio).
Understanding:
Students understand that:
  • technology changes quickly in an attempt to improve the quality and efficiency of life but may cause some disruptions as transitions to new methods take place.
Digital Literacy and Computer Science
DLIT (2018)
Grade: 9-12
33) Evaluate the scalability and reliability of networks by describing the relationship between routers, switches, servers, topology, packets, or addressing, as well as the issues that impact network functionality.

Examples: Bandwidth, load, delay.

a. Explain the purpose of Internet Protocol addresses and how domain names are resolved to IP addresses through a Domain Name System server.

b. Understand the need for networking protocols and examples of common protocols.

Examples: HTTP, SMTP, and FTP

Unpacked Content
Evidence Of Student Attainment:
Students will:
  • describe scalability and reliability of networks.
  • evaluate scalability and reliability of networks by describing the relationships of routers, switches, servers, network topology, packets, and IP addressing.
  • discuss issues that impact network functionality.
a.
  • explain the purpose of Internet Protocol (IP) addresses.
  • explain the use of a Domain Name System (DNS) server.
  • explain how the DNS server resolves the domain name to the IP address.
b.
  • explain the significance of network protocols.
  • identify examples of networking protocols.
  • explain the uses of and basic differences between various networking protocols.
Teacher Vocabulary:
  • scalability
  • reliability
  • bandwidth
  • load
  • delay
  • fault tolerance
  • redundancy
  • latency
a.
  • domain name
  • Domain Name System (DNS) server
  • IP address
  • DNS name resolution
b.
  • networking protocols
  • layers
  • packets
Knowledge:
Students know:
  • how routers, switches, servers, network topology, packets, and IP addressing affect scalability and reliability of networks.
  • how to describe the issues that impact network functionality.
a.
  • that the DNS server function is to turn a user
  • friendly domain name into an IP address that machines use to identify each other on a network.
  • that the DNS server manages a database that maps domain names to IP addresses.
  • the typical format of an IP address.
  • computers communicate the IP address in binary form.
b.
  • that networking protocols are formal standards and policies that include procedures, formats and rules the define how two or more devices will communicate over a network.
  • there are several broad types of networking protocols including network communication protocols such as TCP/IP and HTTP, networking security protocols such as HTTPS and SSL, and network management protocols such as SNMP and ICMP.
Skills:
Students are able to:
  • describe the relationships of routers, switches, servers, network topology, packets, and IP addressing.
  • describe scalability and reliability of networks.
  • describe issues that impact network functionality.
a.
  • explain the purpose of IP addresses.
  • identify what a typical IP address look like.
  • explain the difference between IP addresses expressed in decimal format and binary format.
  • explain how domain names are resolved to IP addresses through a DNS server.
b.
  • explain the significance of networking protocols.
  • provide examples of common networking protocols.
  • explain the uses of different networking protocols.
Understanding:
Students understand that:
  • scalability and reliability of networks are dependent on relationships between routers, switches, servers, network topology, packets, and IP addressing, etc.
  • network functionality is impacted by bandwidth, load, delay, latency, firewalls, server capacity, etc.
a.
  • an Internet Protocol address is a unique identifying number for every machine on the internet.
  • the DNS server manages a massive database that maps user
  • friendly domain names to an IP address.
b.
  • networking protocols are needed to define rules for communication between network devices.
  • networking protocols include Internet protocols (IP, TCP, HTTP, FTP, SMTP, etc.), wireless network protocols (Wi-Fi, Bluetooth, LTE), and network routing protocols (OSPF, BGP, etc.).
  • networking security protocols, such as HTTPS and SSL, provide security over network communications.
  • network management protocols, such as SNMP and ICMP, provide network governance and maintenance.
Tags: Internet, network, technology, Tim BernersLee
License Type: Custom Permission Type
See Terms: https://www.pbslearningmedia.org/help/terms-of-use/
For full descriptions of license types and a guide to usage, visit :
https://creativecommons.org/licenses
AccessibilityVideo resources: includes closed captioning or subtitles
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Author: Stephanie Carver