Answer:
Given that the time to read data off a 7200 rpm disk drive will be roughly 75% of 5400 rpm disk, at 30% idle time of 7200 rpm disk will the power consumption be equal, on average for the two disk
Explanation:
Let the 7200-disk busy time = x ( we need to calculate it)
As given in the question the in the given time to read data off a 7200 rpm disk drive will be roughly 75% of 5400 rpm disk. This mean that we equalize the equations of both disk power
7200-disk power = 5400-disk power
here we apply the formula to calculate the 7200 rpm disk busy time
4.0 * (1-x) + 7.9 * x = 2.9 * (1-x/0.75) + 7.0 * x/0.75
4.0 + 3.9 x = 2.9 – 3.87 x + 9.33 x
1.1 = 5.47 x – 3.9 x
we calculate the value for x
Hence x = 0.70
Applying formula to calculate the idle time.
Idle time = 1.0 – 0.70 = 0.30
Answer:
JPEG, PDF
Explanation:
Answer:The first draft is in JPEG format and the final draft is in PDF format.
:)
Answer:
To show that (A, *) is a group, we need to verify four conditions: closure, associativity, identity, and inverses.
1. Closure: For any x, y in A, x * y = (x ⋅ y) mod 24. Since the product of any two elements in A is also in A, closure is satisfied.
2. Associativity: The binary operator * is associative if (x * y) * z = x * (y * z) for all x, y, z in A. Since multiplication and modulo operations are associative, the binary operator * is also associative.
3. Identity: An identity element e in A should satisfy x * e = e * x = x for all x in A. Let's check each element in A:
1 * 1 = (1 ⋅ 1) mod 24 = 1 mod 24 = 1 (not the identity)
5 * 5 = (5 ⋅ 5) mod 24 = 25 mod 24 = 1 (not the identity)
7 * 7 = (7 ⋅ 7) mod 24 = 49 mod 24 = 1 (not the identity)
11 * 11 = (11 ⋅ 11) mod 24 = 121 mod 24 = 1 (not the identity)
None of the elements in A satisfy the condition for an identity element, so (A, *) does not have an identity element.
4. Inverses: For each element x in A, there should exist an element y in A such that x * y = y * x = e, where e is the identity element. Since (A, *) does not have an identity element, it also does not have inverses.
Therefore, (A, *) does not form a group.
For exercise 4:
a. To prove that A has a subgroup of order 2, we need to find two elements in A whose binary operation results in the identity element (which we determined does not exist). Therefore, A does not have a subgroup of order 2.
b. To prove that A has a subgroup of order 3, we need to find three elements in A whose binary operation results in the identity element (which we determined does not exist). Therefore, A does not have a subgroup of order 3.
B. DAC
C. MAC
D. RBAC
Q2. Which physical access control uses a portable device that authenticates a person's identity electronically by storing some sort of personal information?
A. Infrared scanners
B. Hardware security tokens
C. Biometric devices
D. Keypads
Q3. Which implementation of Network Access Control grants access depending on a specific job role?
A. DAC
B. RBAC
C. MAC
D. PAC
Q4. Which implementation of Network Access Control is more relaxed, allowing users to determine file access privileges?
A. AAC
B. MAC
C. DAC
D. RBAC
Q5. Which type of access control sets the standard for the way security actions unfold?
A. Identity
B. Management
C. Physical
D. Technical
Q.1) Option c) MAC
Q.2) Option c) Biometric devices
Q.3) Option b) RBAC
Q.4) Option c) DAC
Q.5) Option b) Management
What is MAC ?
The ability of individual resource owners to allow or refuse access to resource objects in a file system is constrained by the security measure known as mandatory access control (MAC).
What is a biometric device ?
An authentication and security identification tool is a biometric gadget.
What is RBAC ?
Role-based access control, often known as role-based security, is a method for only allowing authorized users to access a system.
What is DAC ?
The idea behind discretionary access control is to limit access to things based on who the subject is.
Therefore, MAC, biometric device, RBAC, DAC and Management access control sets are some of the measures for network security and access control.
You can learn more about network security from the given link
https://brainly.in/question/33317398
#SPJ2
Answer:
1. MAC
2. Biometric Devices
3. RBAC
4. DAC
5. Management
Explanation:
Answer:
What it is you are welding
Explanation:
If vertical welding, place above weld as a general rule.
Clean the metal you place the clamp on.
When connecting clamp, most machines work better when the cable is facing up unless stated otherwise.
Never ground on a stool in which you intend to sit.
Ground as close to the weld as possible.
Never put stinger on the ground clamp.