Answer:
He should remove any removable devices from the PC , change the boot device to USB or CD drive and insert the installation disk or a created ISO USB file to install
Explanation:
Answer: (A) Firewall; implement an ACL on the interface
Explanation:
According to the question, for re-mediate the issue firewall should be implemented the ACL (Access control list) on the given interface. The access control list is one of the type of logic which selectively give permission or deny the number of packet in the system which to through the interface.
Firewall is the type of device that basically examine the traffic in the network system and also make several decisions in the system. ACL is the set of rule which mainly define the route of the packet in the router interface state.
Answer:
The screen protector may be interfering with the touch response
Explanation:
Screen protectors or commonly called screen guards are used to protect phone screens. In case they fall to the ground, these protectors act as shields to keep the phone screen from getting damaged. However screen protectors if not positioned or fixed properly may also cause hindrance to effective touch response as they become barriers to the touch screen.
Answer: Drop out
Explanation: Drop out is the situation that is defined as abandoning a study in between after taking up or participating in it.This is considered as the act of withdrawal which can happen due to personal reason, lost interest in the course/study,etc.
Other options are incorrect because abandonment is leaving something before taking up or during the course, margin of error is used for defining the error that occurs in the sample survey and mortality signifies temporality or death.Thus, the correct option is drop out.
Answer:
SELECT Ssn,
Last_name
FROM employees
WHERE position = supervisor;
Explanation:
SELECT is an SQL query statement that is used to initiate the display of wanted variables.
The names of the variables often succeed the SELECT statement and they are separated by commas.
FROM is an SQL query statement that indicates the table fro which the selected variables be displayed.
WHERE is used to filter your search and return only rows that meet the criteria.
; signifies the end of a query and calls for an execution.
Clock rate is simply the number of clock cycles a computer can perform in a second
Computer B should be designed to have a clock rate of 4GHz
The given parameters are:
--- time on computer A
--- computer A clock
--- time on computer B
Start by calculating the period of computer A
So, we have:
Rewrite as:
So, we have:
Next, we calculate the required number of clocks on computer A
So, we have:
Computer B requires 1.2 times as many clock cycles as A.
So, we have:
This gives
The clock period of computer B is:
So, we have:
Lastly, the clock rate of computer B is:
Express in gigahertz
Hence, computer B should be designed to have a clock rate of 4GHz
Read more about clock rates at:
Answer:
4 GHz
Explanation:
Time taken for computer A to execute the program is = 10 secs
Given frequency of the clock for computer A is = 2 GHz
We know Clock period = 1 / frequency = 1 / 2 * 109 = 0.5 ns
Number of clocks requried to execute the program in computer A is
= Total Execution time / clock period = 10 / 0.5 * 10-9 = 20 * 109 clocks
Given Time taken for computer B to execute the program is = 6 secs
Given computer B requries 1.2 times as many clocks as computer A
implies number of clocks to execute program in computer B = 1.2 * 20 * 109 = 24 * 109
Here clock period of computer B = Total execution time / number of clocks
= 6 secs / 24 * 109
= 0.25 ns
Hence clock rate = frequency is = 1 / clock period = 1 / 0.25 ns = 4 GHz.
Answer:
A. HTTPS
Explanation:
Default HTTP port is 80. This means that the server request is received on port 80. But default HTTP request is susceptible to interception. In order to prevent it, HTTP communication is secured using SSL encryption (HTTPS protocol). In this case the Url string begins with 'https://' which differentiates it from normal web request. The default port used for HTTPS service is 443 instead of 80.