Answer:
Physical layer
Explanation:
OSI model stands for Open Systems Interconnection. The seven layers of OSI model architecture starts from the Hardware Layers (Layers in Hardware Systems) to Software Layers (Layers in Software Systems) and includes the following;
1. Physical Layer
2. Data link Layer
3. Network Layer
4. Transport Layer
5. Session Layer
6. Presentation Layer
7. Application Layer
Each layer has its unique functionality which is responsible for the proper functioning of the communication services.
In the OSI model, the physical layer is the first and lowest layer. Just like its name physical, it addresses and provides information about the physical characteristics such as type of connector, cable type, length of cable, etc., of a network.
This ultimately implies that, the physical layer of the network (OSI) model layer provides information about the physical dimensions of a network connector such as a RJ45. A RJ45 is used for connecting a CAT-5 or CAT-6 cable to a networking device.
Answer:
0.2kN
Explanation:
An hydraulic jack works by the principle that pressure applied to one part in an enclosed liquid is transmitted equally in all parts of the liquid. this is in accordance with Pascal's principle.
Pressure= Force/Area
P=F/A
Pressure due to the load= Pressure due to input force for the system to be in balance.
Let force due to load be F₁, input force be F₂, Area at the load piston be A₁ and the area of the pipe through which the input force transmits be A₂, then,
F₁/A₁=F₂/A₂
10000N/5m²=F₂/1m²
F₂=(1000N×1m²)/5m²
F₂=200N
=0.2kN
Answer:
(c) A list of words
Explanation:
<em>First let's format the code properly</em>
fin = open('words.txt')
for line in fin:
word = line.strip()
print(word)
<em>Second, let's explain each line of the code</em>
Line 1:
The open() function is a built-in function that takes in, as argument, the name of a file, and returns a file object that can be used to read the file.
In this case, the name of the file is <em>words.txt. </em>Therefore, the variable <em>fin </em>is a file object which contains the content of the file - <em>words.txt</em>
Line 2:
The <em>for </em>loop is used to read in each line of the content of the file object (fin).
Line 3:
Each line of the contents is stripped to remove any trailing and leading white spaces by calling on the <em>strip()</em> function. The result of the strip is stored in the variable <em>word.</em>
Line 4:
The content of word at each of the cycles of the loop is printed to the console.
Therefore, the overall output of the program is a list of words where each word represents a line in the target file (words.txt)
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