Computer for Class - 8 Exercise Solutions

 1. Fill in the blanks

(a) Bandwidth refers to the speed to transfer of data over a network.

(b) Canvas is working space where images can be drawn.

(c) A filter changes the appearance of the image on front layer.

(d) Every second, new malware (or viruses) are developed by miscreants.

(e) Type casting (or Type conversion) is the conversion of one data type into another data type.

2. Write 'True' or 'False'

(a) Workstation is also termed as server. — False (A workstation is a client computer, not a server.)(b) Flip tool is used to reverse the layer. — True (It flips or mirrors the layer vertically or horizontally.)(c) Boot sector virus gains complete control over program file. — False (It targets the Master Boot Record or boot sector, not individual program files.)(d) Python is a case sensitive language. — True(e) Multiple lines comments always start with the symbol #. — False (Single-line comments start with #; multi-line comments use triple quotes ''' or """.)

3. Expand the Following

(a) TRAI: Telecom Regulatory Authority of India(b) FQDN: Fully Qualified Domain Name(c) GIMP: GNU Image Manipulation Program(d) BSOD: Blue Screen of Death(e) IDLE: Integrated Development and Learning Environment

4. Application Based Question

(a) Is this safe, if No, suggest a safer practice?No, it is not safe. If a hacker breaches one account, they can access all her other accounts. A safer practice is to use unique, strong passwords for every account and manage them using a password manager.(b) Which tools will she use to remove and place the background?She can use the Fuzzy Select Tool (Magic Wand) or Foreground Select Tool in image editors like GIMP to select and delete the background. Then, she can use the Layers feature to place her photograph onto a new background layer.

Programmingway@Eklavya Technosys!: Python Exercise Solutions

Programmingway@Eklavya Technosys!: Python Exercise Solutions: 1) What is coding? Answer: Coding is the process of writing instructions in a programming language that computer can understand and execute....

Python Exercise Solutions

1) What is coding? Answer: Coding is the process of writing instructions in a programming language that computer can understand and execute.  2) What is Python? Answer: Python is a computer programming language. 3) Write the name of computer programming language. Answer: C++, JAVA, Small Basic, PHP, Python etc.  4) Write the name of Python applications field. Answer: Robotics, AI, Hardware Testing, 3D Animation Tool (Maya) etc.  5) Write about feature of Python. Answer: The features of Python are:- 1) Simple like English language. 2) Case sensitive language. 3) Portable and compatible 4) Interpreter based language.  6) Who is the developer of Python? Answer: Guido Von Rossum.  7) How many working modes of Python? Answer: There are two working modes of Python.        1)    Interactive mode – It enables to type single line command at the python prompt.                2)    Script Mode - It enables to write set codes in multiple lines in a file and then further use. a=5 b=4 c=a+b print(c)

Programmingway@Eklavya Technosys!: Python Exercise Solutions

Programmingway@Eklavya Technosys!: Python Exercise Solutions: 1) What is coding? Answer: Coding is the process of writing instructions in a programming language that computer can understand and execute....

निबंध : प्रदूषण की समस्या

 प्रदूषण का अर्थ : प्रदूषण का अर्थ है -प्राकृतिक संतुलन में दोष पैदा होना। न शुद्ध वायु मिलना, न शुद्ध जल मिलना, न शुद्ध खाद्य मिलना, न शांत वातावरण मिलना। 

प्रदूषण कई प्रकार का होता है! प्रमुख प्रदूषण हैं - वायु-प्रदूषण, जल-प्रदूषण और ध्वनि-प्रदूषण ।  

वायु-प्रदूषण : महानगरों में यह प्रदूषण अधिक फैला है। वहां चौबीसों घंटे कल-कारखानों का धुआं, मोटर-वाहनों का काला धुआं इस तरह फैल गया है कि स्वस्थ वायु में सांस लेना दूभर हो गया है।

जल-प्रदूषण : कल-कारखानों का दूषित जल नदी-नालों में मिलकर भयंकर जल-प्रदूषण पैदा करता है। बाढ़ के समय तो कारखानों का दुर्गंधित जल सब नाली-नालों में घुल मिल जाता है। 

ध्वनि-प्रदूषण : मनुष्य को रहने के लिए शांत वातावरण चाहिए। परन्तु आजकल कल-कारखानों का शोर, यातायात का शोर, मोटर-गाड़ियों की चिल्ल-पों, लाउड स्पीकरों की कर्णभेदक ध्वनि ने बहरेपन और तनाव को जन्म दिया है।

प्रदूषणों के दुष्परिणाम: उपर्युक्त प्रदूषणों के कारण मानव के स्वस्थ जीवन को खतरा पैदा हो गया है। खुली हवा में लम्बी सांस लेने तक को तरस गया है आदमी। गंदे जल के कारण कई बीमारियां फसलों में चली जाती हैं जो मनुष्य के शरीर में पहुंचकर घातक बीमारियां पैदा करती हैं।

Programmingway@Eklavya Technosys!: PHP Exercise Solutions

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