Hi, share your knowledge with the community!

How many active internet website there is on internet?

Anonymous A

Hello everyone,

I got this question in an interview and was stuck on how to solve it

How would you approach this problem?

  • Upvotes
  • Date ascending
  • Date descending
Ray replied on 10/11/2017

Hi, thanks for your question. I think the case is essentially testing your ability to segment a massive concept like 'internet websites' to its components. Below is my answer for this case:

Assume one website represents one particular entity (e.g. LinkedIn is one website and not multiple web pages)

No. of active internet website = [No. of government websites (e.g. US Department of Justice, Ukraine's Telecommunications Commission etc.) + No. of Private Sector websites (e.g. Facebook, McKinsey, UBER etc.) + No. of NGO websites (e.g. Oxfam, Red Cross etc.)] x 1.1 (10% for others that don't fall into this category like random personal websites you're developing out of interest, school work, pilot project etc.)

No. of government websites = No. of countries x Average no. of industries per country

No. of Private Sector websites = Average no. of companies x No. of industries

  • If more detail is required, average no. of companies can be broken down to family businesses, SMEs, and large corporations. I would advise you to size based on a medium-sized country and just use that to multiply by the total number of countries

No. of NGO websites - Similar as No. of Private Sector websites

Hope this helps in any way and happy to get comments/feedback on this - thanks!

(edited)

Vlad replied on 10/10/2017
McKinsey / Accenture / More than 300 real MBB cases / Collected all Big 3 offers / Harvard Business School

Hi,

I would try this:

  1. 1M words in English language
  2. 60% or 600k are nouns
  3. 1.2 M if every word has multiple forms (e.g. dog / dogs)
  4. How often do I see a single-word web-sites? Probably 1 in 50
  5. How many domain zones? .com is probably 60% of the internet

You can take it from here and add as many assumptions as you want (e.g. different languages, word permutations, etc). I think this case is more about the approach rather than having precise numbers.

Best

Related BootCamp article(s)

Typical Question Types in Written Tests

Questions among all tests can be categorized in math, GMAT-style, chart reading and brain teaser questions. Each type needs to be approached differently.

4 Comment(s)

Brain Teasers

Learn how to tackle brain teasers and what purpose they serve in consulting case interviews

1 Comment(s)

Related case(s)

Brain Teasers - U2 Concert

Solved 4.2k times
4.4 5 119
| Rating: (4.4 / 5.0)
Difficulty: Intermediate | Style: Brain Teaser | Topics: Brain teaser

Number sequence Situation: “You and I will take turns saying numbers. The first person will say a number between 1 and 10. Then, the other person will say a number that is greater than the first number. The difference between both numbers must be between 1 and 10. We will keep going back and f ... Open whole case

Brain Teasers - Firefighter

Solved 3.6k times
4.4 5 45
| Rating: (4.4 / 5.0)
Difficulty: Intermediate | Style: Brain Teaser | Topics: Brain teaser

Firefighter Situation: A firefighter stood on the middle rung of a ladder, spraying water on a burning house. He then climbed up 6 rungs before the heat of the flames caused him to come down 10 rungs. After some minutes he was able to climb 18 rungs to the very top of the ladder. Question: ... Open whole case

Brain Teasers - Barbershop

Solved 3.5k times
4.1 5 25
| Rating: (4.1 / 5.0)
Difficulty: Intermediate | Style: Brain Teaser | Topics: Brain teaser

Barbershop Statement: A business man is in a village for a meeting. He has time to spare before the meeting, so he decides to get a haircut. He looks at a street map and was surprised to find that there are only two barbers in town, right across the road from each other. He went into the f ... Open whole case

Brain Teasers - Lethal Duel

Solved 3.0k times
4.5 5 29
| Rating: (4.5 / 5.0)
Difficulty: Intermediate | Style: Brain Teaser | Topics: Brain teaser

Duel Situation: Three men, Adam, Bertie and Charlie, agree to take part in a lethal three-way duel. They each have a pistol and several rounds of ammo, and they draw lots to see who will shoot first and who second. Then they stand an equal distance apart, and they take turns to fire. When it i ... Open whole case

Brain Teasers - Light Bulb

Solved 1.9k times
4.1 5 12
| Rating: (4.1 / 5.0)
Difficulty: Intermediate | Style: Brain Teaser | Topics: Brain teaser

Light Bulb Situation: You are standing in front of a room with one light bulb inside of it. You cannot see if it is on or off. Outside the room there are 3 switches in the off positions. You may turn the switches any way you want to. You can open the door and enter the room, but you cannot use ... Open whole case