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WorksheetsCode.org Chapter 2
Total questions: 16
Worksheet time: 15mins
Which of the following is FALSE about routers and routing on the internet?
The central DNS server determines the shortest route for a packet to take between two IP addresses.
Each router independently determines how to pass along each packet it receives.
Packets often arrive in the wrong order or are lost entirely.
Routers will attempt to find the quickest route to the packet's destination based on the information available to the router's software.
Which protocol is considered to be on the lowest level in the Internet stack?
TCP/IP
HTTP
DNS
FTP
What information could you NOT determine ONLY from reading the router logs when we were chatting on the internet simulator in class?
What IP address was sending a message.
What IP address was receiving a message.
The content of the message.
The name of the person sending the message.
True or false: You cannot use a higher level protocol without fully understanding how all the lower level protocols it depends on.
True
False
True or false: A high level protocol must implement all the functionality of the lower level protocols beneath it.
True
False
Which of the following is a subdomain of .org?
wikipedia.org
amazon.com
google.com
verizon.net
Which is a subdomain of providenceschools.org ?
.org
http://providenceschools.org
mail.providenceschools.org
ppsd.org
Which of the following is true about TCP/IP packets?
Packets that are part of the same message may take different routes from sender to receiver.
TCP guarantees that no packets are dropped in transit.
Packets must arrive in the correct order at the receiver.
If a packet is dropped, the entire message must be resent in order.
The loose organization of citizens and engineers that defines protocols and standards for the internet is called the:
Internet Engineering Task Force (IETF)
National Science Foundation (NSF)
National Security Agency (NSA)
United Nations Internet Federation (UNIF)
How does a computer resolve a domain name into an IP address?
It asks its assigned DNS server.
It checks its etc/hosts file.
It consults the DDOS exchange.
It is provided by the DHCP server on the server's subnet.
What is the main advantage of IPv6 over IPv4?
A much larger number of unique IP addresses is available.
More than 4 gigabytes of memory can be used on the internet with IPv6.
Greater resistance to DDoS attacks.
Higher bandwidth for streaming video.
TCP - Transmission Control Protocol...
...provides reliable, ordered, and error-checked delivery of a stream of packets on the internet.
...translates domain names (like example.com) to IP addresses (like 93.184.216.34)
... is used for transmitting web pages over the Internet.
... is an easy-to-remember address for calling a web page (like www.code.org).
... provides a standard set of rules for sending and receiving data over the Internet.
DNS - Domain Name System...
...provides reliable, ordered, and error-checked delivery of a stream of packets on the internet.
...translates domain names (like example.com) to IP addresses (like 93.184.216.34)
... is used for transmitting web pages over the Internet.
... is an easy-to-remember address for calling a web page (like www.code.org).
... provides a standard set of rules for sending and receiving data over the Internet.
HTTP - Hypertext Transfer Protocol...
...provides reliable, ordered, and error-checked delivery of a stream of packets on the internet.
...translates domain names (like example.com) to IP addresses (like 93.184.216.34)
... is used for transmitting web pages over the Internet.
... is an easy-to-remember address for calling a web page (like www.code.org).
... provides a standard set of rules for sending and receiving data over the Internet.
URL - Uniform Resource Locator...
...provides reliable, ordered, and error-checked delivery of a stream of packets on the internet.
...translates domain names (like example.com) to IP addresses (like 93.184.216.34)
... is used for transmitting web pages over the Internet.
... is an easy-to-remember address for calling a web page (like www.code.org).
... provides a standard set of rules for sending and receiving data over the Internet.
IP - Internet Protocol...
...provides reliable, ordered, and error-checked delivery of a stream of packets on the internet.
...translates domain names (like example.com) to IP addresses (like 93.184.216.34)
... is used for transmitting web pages over the Internet.
... is an easy-to-remember address for calling a web page (like www.code.org).
... provides a standard set of rules for sending and receiving data over the Internet.
