The [:alpha:] in the expression indicates:
```
preg_match("/\b(car[[:alpha:]]+)\b/i", $string)
```
a. searches for any word beginning with the pattern "car"
b. searches for any word ending with the pattern "car"
c. searches specifically for the whole word "car"
d. searches for any lowercase string that matches the pattern "car"
a. searches for any word beginning with the pattern "car"
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Extend the previous exercise. Estimate the size (in octets) of an IP datagram that carries one-quarter of a second of audio encoded in PCM, placed in an RTP packet, and encapsulated in UDP. (Hint: RFC 1889 defines the size of an RTP header.)
What will be an ideal response?
Ransomware holds a user's files for ransom by encrypting them
Indicate whether the statement is true or false
A person or organization that has a vested interest in a particular aspect of the planning or operation of an organization-for example, the information assets used in a particular organization-is known as a(n) _________.
Fill in the blank(s) with the appropriate word(s).
A customer brings in a PC that recently stopped working. The technician begins diagnosis and finds the following symptoms: The PC turns on and all fans spin normally. No display output is given either from onboard video or a PCIe video card. There are no POST beep codes even with the CPU and RAM fully removed. Which of the following is the MOST accurate conclusion based on these finding?
A. The PSU wattage is rated too low for the components. B. The CMOS battery is dead and needs replacement. C. The PSU has its voltage switch set to 240V. D. The motherboard has failed and needs replacement.