Comparison of IPv4 and IPv6

Description IPv4 IPv6 Address 32 bits long (4 bytes). Address is composed of a network and a host portion, which depend on address class. Various address classes are defined: A, B, C, D, or E depending on initial few bits.…

RAID 5 vs. RAID 6

There is a performance impact when you use RAID-6 (you update two parity drives instead of just one), but RAID-6 is recommended by Red Hat since drive current drive capacities increases the probability that a double fault will occur while…

Kam investovat?

Následující tabulka vás seznámí s možným zhodnocením vašeho jmění a rizikem u jednotlivých typů investic. Investice Zhodnocení Informace (rizika) Akcie dle schopností 20 % p.a. Pohyb cen na akciových trzích je velmi těžko předvídatelný (možnost ztrát při krátkodobém aktivním obchodování). Z dlouhodobého hlediska zhodnocování…

Could wireless carriers start with Ad-Blocking?

Shine has a bold idea that could result in mobile carriers claiming a share of advertising revenue for themselves. The system it’s developing, called „AdSight,“ could be used not only to track ad data, but also to block specific ads.…

Hadoop installation Fedora 20

Hadoop download Java JDK SE download Install guide for reference After starting dfs check that your web is responding  $ sbin In step 5 there seems to be mistake in following line  [root@drash hadoop]# bin/hdfs dfs -put…