A process is moved to wait queue when I/O request is made with:_______ A. non-blocking I/O B. blocking I/O C. asynchronous I/O D

Answer:

Service record (SRV)

Explanation:

Service records, known as SRV records, contain information defining aspects of the DNS like port numbers, server details, hostnames, priority, weight, and the IP addresses of designated service servers.

The SRV record serves as a valuable reference for locating specific services, as applications needing those services will search for the corresponding SRV record.

When configured, the SRV provides the necessary ports and personal settings for a new email client; without this, the parameters within the email client will be incorrect.

Answer

Abstraction in GPS technology allows the system to use clearly defined interfaces while enabling the integration of additional, more complex functionalities.

Explanation

The GPS system employs abstraction to organize layers of complexity for user interaction. It connects satellite-based positioning and timing systems to enable a radio receiver to acquire signals across four dimensions—latitude, longitude, altitude, and time—after synchronizing this data.

Answer:

C3H8

Explanation:

Step 1:

Relevant details from the question are noted below:

Mass of the alkane is 1.17g

Volume (V) = 674 mL

Temperature (T) = 28°C

Pressure (P) = 741 mmHg.

Gas constant (R) = 0.08206 atm.L/Kmol

Step 2:

Convert to the appropriate units.

For Volume:

1000mL = 1L

So, 674mL = 674/1000 = 0.674L

For Temperature:

Temperature in Kelvin = Temperature in Celsius + 273

Temperature in Celsius = 28°C

Temperature in Kelvin = 28°C + 273 = 301K

For Pressure:

760mmHg = 1atm

So, 741 mmHg = 741/760 = 0.975atm

Step 3:

Calculate the moles of the alkane.

The moles of the alkane can be found using the ideal gas equation, presented below:

Volume (V) = 0.674L

Temperature (T) = 301K

Pressure (P) = 0.975atm

Gas constant (R) = 0.08206 atm.L/Kmol

Number of moles (n) =?

PV = nRT

n = PV /RT

n = (0.975 x 0.674)/(0.08206x301)

n = 0.0266 moles

Step 4:

Calculate the alkane’s molar mass.

Mass of alkane = 1.17g

Number of moles = 0.0266moles

Molar Mass =?

Number of moles = Mass/Molar Mass

Molar Mass = Mass/Number of moles

Molar Mass of alkane = 1.17/0.0266 = 44g/mol

Step 5:

Determine the molecular formula of the alkane.

This is based on:

The general formula for alkanes is CnH2n+2

To find the molecular formula, we start with n = 1, 2, 3, etc., until we find the molar mass of 44.

When n = 1

CnH2n+2 = CH4 = 12 + (4x1) = 16g/mol

When n = 2

CnH2n+2 = C2H6 = (12x2) + (6x1) = 30g/mol

When n = 3

CnH2n+2 = C3H8 = (12x3) + (8x1) = 44g/mol

It can be observed that for n equal to 3, the molar mass is 44g/mol.

Thus, the molecular formula of the alkane is C3H8.

Answer:

C) Flight Simulation software offers pilots a more authentic training experience compared to actual flight sessions.

Explanation:

Flight simulation programs are utilized to instruct future pilots in aviation schools. They replicate the circumstances that pilots will likely encounter during real flights and how to manage them.

This software enables pilots to rehearse landings across various types of landscapes and weather conditions without geographical limitations.

Additionally, it is cost-effective by reducing expenses on fuel and maintenance related to actual training flights.

Nevertheless, it does not engage pilots in a more authentic experience than actual training flights.