Related:

• 0166 Do you know what HCF means? 0167 ... Ever use it?
  0168 ... Intentionally? -- from THE HACKER TEST...
• 0022 Do you know how many days old you are? -- from THE HACKER TEST
• Do you know how to use 0275 ... an oscilliscope? 0276 .
  .. a voltmeter? 0277 ... a frequency counter? 0278 ....
• 0429 Do you use the "P convention"? -- from THE HACKER TEST
• 0476 Do you know Jensen's device? -- from THE HACKER TEST
• 0165 Do you know Gray code? -- from THE HACKER TEST
• 0369 Do you know the max packet lifetime? -- from THE HACKER TEST
• 0475 Do you know Duff's device? -- from THE HACKER TEST
• 0038 Do you know maxint on your system? -- from THE HACKER TEST