Compsci 82, Fall 2008, Sept 1
By entering your name/net-id below you indicate you are in class on Sept
1 to answer these questions (some are repeated from last week).
Name: ______________________________ Net id: _____________
Name: ______________________________ Net id: _____________
Name: ______________________________ Net id: _____________
Name: ______________________________ Net id: _____________
- What is DNS and what is it used for?
- Why don't you type http://199.239.137.245 when you
want to go to http://www.nytimes.com in a browser
even though they both go to the same website?
- With IPv4, the current IP addressing protocol, there are
232 different addresses, which is about 4 billion
(4,294,967,296). According to idc.com there are 1.5 billion devices
connected to the Internet in 2008 and there will be 3 billion by
2012. According to Vint Cerf, one of the founders of the Internet and
currently Internet Evangelist for Google there will be 35
billion devices connected to the Internet in 2010. He also predicts
there will be 1.3 billion people using the Internet in 2035. Explain the
disparity between number of people using the Internet and the number of
devices connected to the Internet.
- What is the transitive trust model of BGP in less than two
sentences?
- How big is a BGP routing table?
- The domain www.google.com maps to different IP addresses
depending where (in the world) you use the domain
www.google.com. Provide a plausible
reason for why Google uses different IP addresses.