What IEEE standard was Wired Equivalent Privacy first introduced?
- 802.1x
- 801.1a
- 802
- 802.11
What IEEE standard was Wired Equivalent Privacy first introduced?
Thursday, September 27, 2018
Wednesday, September 26, 2018
An initialization vector should be which of the following?
An initialization vector should be which of the following?
- Repeatable and random
- Unique and predictable
- Unique and unpredicatable
- Repeatable and unique
EXPLANATION
An initialization vector (IV) should be unique and unpredictable. To prevent an attack,an IV must not be repeated with a given key and should appear random.
SOURCE
https://en.wikipedia.org/wiki/Initialization_vectorTuesday, September 25, 2018
Which type of RAID configuration requires minimum six drives?
Which type of RAID configuration requires minimum six drives?
- RAID 50 (RAID 5 + 0)
- RAID 100 (RAID 10+0)
- RAID 6
- RAID 60 (RAID 6 + 0)
EXPLANATION
RAID 50, also called RAID 5+0, combines the straight block-level striping of RAID 0 with the distributed parity of RAID 5.[3] As a RAID 0 array striped across RAID 5 elements, minimal RAID 50 configuration requires six drives.SOURCE
https://en.wikipedia.org/wiki/Nested_RAID_levelsIn sql, which of the following is applicable to the CHAR datatype?
In sql, which of the following is applicable to the CHAR datatype?
- CHAR stores alphanumeric characters of fixed size
- Stores alphanumeric characters of variable length
- to create scripts containing infinite characters
- Type as many characters as you want
EXPLANATION
The only difference between CHAR and VARCHAR2 is that CHAR stores fixed-length alphanumeric characters, between 1 and 2000 bytes or characters. If you are stored in the JUNIOR surname in a CHAR (50) column, a column will contain a JUNIOR string + 44 whitespaces that are automatically added to the total column volume.SOURCE
http://www.fabioprado.net/2011/08/qual-tipo-de-dado-devo-usar-char.htmlWhich of the following is NOT a computer programming language?
Which of the following is NOT a computer programming language?
- Lisp
- Occam
- SNOBOL
- Modal
EXPLANATION
MODAL isn't a programming language but is used in computer applications, especially within websites. It is a graphical window control element, subordinate to an application's main window.SNOBOL (StriNg Oriented and symBOlic Language), is a text-string-oriented language developed by AT&T Bell Labs in the 1960s.
LISP, developed in the 1950s, is one of the oldest high-level programming languages and is only pre-dated by the likes of FORTRAN.
OCCAM was one of the earliest Concurrent programming languages, developed by INMOS as the native programming language for their Transputer Microprocessors.
