Khan Academy The Internet Study List UPDATED ACTUAL Questions and CORRECT Answers
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Khan Academy The Internet Study List
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Khan Academy The Internet Study List
Khan Academy The Internet Study List
UPDATED ACTUAL Questions and
CORRECT Answers
Tiffany is helping a family member learn how to use Gmail.
She notices the website is using a different font and logo, and that the emails are suspiciously
worded:
Tiffany suspects that has been compromised b...
Khan Academy The Internet Study List
UPDATED ACTUAL Questions and
CORRECT Answers
Tiffany is helping a family member learn how to use Gmail.
She notices the website is using a different font and logo, and that the emails are suspiciously
worded:
Tiffany suspects that gmail.com has been compromised by a DNS spoofing attack.
Which of these are good next steps?
👁️Note that there are 2 answers to this question. - CORRECT ANSWER✔✔- Contact the
Gmail team via social media or phone
Close the Gmail tab
TCP/IP are the protocols that route data around the internet.
What are they each responsible for?
👁️Note that there are 2 answers to this question. - CORRECT ANSWER✔✔- IP is
responsible for routing of packets from source to destination across the internet.
TCP is responsible for reliable transmission of packets.
IP v4 addresses currently cost more to lease than in the past.
What's the most likely explanation for why people are willing to pay more for IP v4 addresses
now? - CORRECT ANSWER✔✔- There are very few available IP v4 addresses in the
world, and the scarcity increases the demand.
Over the years, engineers have invented many networking technologies for LANs (local area
networks). Many are still in use, and many of the very slow ones were abandoned long ago.
The following is a sampling of LAN technologies and their bandwidths.
Sort the technologies from lowest to highest bandwidth, with the lowest on the top and the
highest on the bottom:
Startuppr is a web company that's running their servers out of their garage. Uptime is
important to them, so they pay for two internet service providers, Xfinity & Wave. The ISP
routers then send their server's packets to the rest of the internet.
Unfortunately, this network is not fault tolerant: there's still a single point of failure.
Which router needs to stay available for Startuppr servers to stay connected to the internet? -
CORRECT ANSWER✔✔- Router A
NSFNET was an early internet connecting the computer science departments of universities.
In 1986, NSFNET connected 6 departments across the US:
Redundancy in a network makes it more fault-tolerant. When two computers in a network are
connected by multiple routes, that adds redundancy.
In this network, how many routes are between San Diego and Cornell? - CORRECT
ANSWER✔✔- 4 routes
D'Andre is riding a train with wireless internet service. When he logs online, he sees a
warning that the wireless network has limited bandwidth.
Which online activities are most likely to be affected by limited bandwidth?
👁️Note that there are 2 answers to this question. - CORRECT ANSWER✔✔- Watching
online movies
Downloading a large application
, Which of these could be a valid IP v4 or IP v6 address?
👁️Note that there may be multiple answers to this question. - CORRECT ANSWER✔✔-
192.168.17.43
2001:0db8:85a3:03eF:7cb3:8a2e:0370:7334
Which of these is the best description of the domain name system (DNS)? - CORRECT
ANSWER✔✔- The domain name system associates domain names with IP addresses, like
"www.youtube.com" with 208.65.153.251.
Each IP packet contains a sequence number.
What is the primary purpose of the sequence number? - CORRECT ANSWER✔✔- It helps
the receiving computer reassemble the packets.
Comcast, an Internet Service Provider in the US, has many IP addresses that it can assign to
its customer's computers. One IP address is 24.128.139.211.
Which explanation best describes the hierarchical nature of that address? - CORRECT
ANSWER✔✔- The first part of the address (24.128) identifies the network (Comcast) and
the second part (139.211) identifies the individual customer.
Nadia is at an internet cafe in Paraguay, where the download speed is 600 kbps. She's chatting
with her friend Jun in Singapore, where the download speed is 60 Mbps.
How much faster is Jun's speed than Nadia's? - CORRECT ANSWER✔✔- 100x
Consider the website:
help.donorschoose.org
That website hosts the help center for DonorsChoose, a site where teachers can fundraise for
classrooms.
Which of these statements are true?
👁️Note that there are 2 answers to this question. - CORRECT ANSWER✔✔- help is a
subdomain of donorschoose.org
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