The theory tag has no wiki summary.
0
votes
3answers
107 views
Theory regarding MAC and IP address in network packet and frame content?
Okay, network theory and protocol questions for you guys:
Assuming a router is using NAT, is a device's MAC address every actually exposed to the Internet? Or, does the router transmogrify (wow, ...
5
votes
5answers
654 views
How does parity work on a RAID-5 array?
I'm looking to build a nice little RAID array for dedicated backups. I'd like to have about 2-4TB of space available, as I have this nasty little habit of digitizing everything. Thus, I need a lot of ...
6
votes
1answer
141 views
How do Optical/Laser mice work?
The old fashioned mice worked via two wheels that are turned by a ball:
Found here
One represented the x-axis while the other represtened the y-axis. Turning one, would move the mouse in that ...
1
vote
1answer
235 views
Collisions in CSMA/CD Ethernet
I am confused about collisions in CSMA/CD Ethernet. When would a jam signal be sent? Why are jam signals sent? If two simultaneous packet transmissions interfere with each other, the two transmitting ...
0
votes
0answers
25 views
Theory of Computability [closed]
Is studying the theory of computability essential for a successful career in computer science? topics include deterministic finite automata, non-deterministic finite automata, regular expressions, ...
1
vote
2answers
172 views
Biba and Bell-Lapadula
Does the Biba integrity model (No write-up, no read-down) necessarily conflict with the Bell-Lapadula security model (No write-down, no read-up)? Or can they both coexist in a single system?
0
votes
2answers
74 views
Why does a hard disk suddenly look to Windows as if it “needs to be formatted”?
This is more of a theory question, but what are the reason(s) for a disk to suddenly cause Windows to start saying it "needs to be formatted"?
It happens to an IDE disk that I have in a cheap ...
5
votes
2answers
297 views
How far do electrons physically move in a single clock cycle in a (theoretical) 4GHz processor?
I was musing last night about computers and processors and this video of a 6-bit digital adding machine, and I know that 4 GHz seems to be the practical limit of mass-produced CPUs of the current era. ...
7
votes
4answers
334 views
Why does encryption not destroy the way networks work?
I've a very basic understanding of how encryption works.
My knowledge insofar is that of CCNA discovery level on the CISCO courses (along with a few other things such as Steve Gibson and Leo Laporte ...
10
votes
4answers
643 views
Why is a FLAC encoded from a decoded MP3 bigger than the MP3?
To be more precise than in the title, suppose I have a MP3 file that is 320 kbps. If I decompress it, then logically, all the data except for roughly 320 kilobits out of each second of audio should be ...
