PPSC PAST PAPERS HELD IN 2024
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مواصلاتی چینلز پر ترسیل کے لیے ڈیجیٹل سگنلز کو اینالاگ سگنلز میں تبدیل کرنے کے لیے کون سا عمل استعمال کیا جاتا ہے
Modulation
Encoding
Decoding
Multiplexing
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Explanation
The process used to convert digital signals into analog signals for transmission over communication channels is called modulation .
Modulation involves altering a carrier signal (which is analog) to encode the digital information ,
Allowing it to be transmitted over mediums that typically carry analog signals, such as radio waves or telephone lines.
Digital signals
Binary signals
Analog signals
Pulse signals
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Explanation
Traditional telephone lines typically carry analog signals.
When we speak on a traditional landline phone, our voice (which is analog) is converted into electrical signals that travel through the telephone wires.
These analog signals are then transmitted over the telephone network.
@
#
%
*
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Explanation
In both C and C++ programming languages, the symbol used to access the value stored at a memory address (dereferencing a pointer) is the asterisk (*).
* and & are the operators used in pointers.
* gives us the value stored at a particular address
whereas “ & “ gives us the address of the variable
Single inheritance
Multiple inheritance
Multilevel inheritance
None of these
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Explanation
In Java, a class cannot inherit from more than one superclass to avoid ambiguity.
However, it does support single inheritance, multilevel inheritance, and hierarchical inheritance .
To achieve some aspects of multiple inheritance, Java u ses interfaces, allowing a class to implement multiple interfaces.
شاہ حاتم کی شاعری عموماً کس موضوع پر مبنی ہے:
Romantic love and nature
Human emotions, ethics and societal issues
Political ideologies and revolutions
Religious rituals and ceremonies
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Explanation
Shah Hatim's poetry is generally based on: Romantic love and nature.
ab
abb
cb
All of these
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Explanation
Now let's evaluate the options:
(A) ab: T his string matches ab^* a b ∗ (since b^* b ∗ allows for one 'b'). So, this belongs to R
(B) abb: This string also matches a b ∗ (since b^* b ∗ allows for two 'b's). So, this belongs to R .
(C) cb: This string matches c b ∗ (since b^* b ∗ allows for one 'b'). So, this belongs to R .
(D) All of these: Since all the previous options (A, B, C) belong to R R , this is correct.
Reliability
Security
Performance
All of these
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Explanation
Reliability : Networks allow data redundancy and backup systems, which can improve reliability. Security: Networks enable centralized security measures like firewalls and encryption to protect data. Performance: Networks improve communication speed and data transfer, allowing for efficient resource sharing and collaboration.
سافٹ ویئر مینیجر کی عام ذمہ داریاں کیا ہیں؟
Planning software projects
Leading development teams
Managing budgets and resources
All of these
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Explanation
Software managers are responsible for:
Planning software projects: Organizing and scheduling the work. Leading development teams: Guiding and overseeing software engineers and teams. Managing budgets and resources: Allocating finances and other resources to ensure successful project delivery.
5
10
15
20
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Explanation
She has laugh.
She had laughed.
She has laughing.
None of these
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Explanation
The past perfect sentence is: She had laughed.
The past perfect tense uses "had" + past participle ( in this case, "laughed" ).