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❓ Quiz Question

Oct 25, 2026

Quiz: How do you declare a reusable anchor in YAML and subsequently reference (alias) it?

YAML anchors are defined using an ampersand ( &name ) and referenced using an asterisk alias ( *name ).

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❓ Quiz Question

Aug 12, 2026

Quiz: What kind of database model is Amazon DynamoDB?

Amazon DynamoDB is a serverless NoSQL database designed for high-throughput applications requiring fast, predictable single-digit millisecond response times.

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❓ Quiz Question

Aug 12, 2026

Quiz: In Linux, what permissions are granted by the command <code>chmod 755 script.sh</code>?

755 octal notation assigns rwx (4+2+1=7) to Owner, and r-x (4+0+1=5) to Group and Others.

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Aug 30, 2026

Quiz: What is the purpose of Django ORM `Q` objects?

Q objects allow developers to build complex keyword queries combining logical conditions in Django ORM filters.

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❓ Quiz Question

Oct 25, 2026

Quiz: Which operator performs true linear algebra matrix multiplication between two 2D NumPy arrays in Python 3.5+?

The @ operator ( np.matmul ) computes the dot/matrix product, whereas * performs element-wise multiplication.

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❓ Quiz Question

Oct 25, 2026

Quiz: Which command sets global user author identity applied to all future commits on the current machine?

git config --global configures user identity in ~/.gitconfig , attributing future commits to that author.

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❓ Quiz Question

Oct 25, 2026

Quiz: Which operator is used to merge all keys from an anchored mapping into another mapping in YAML?

The merge key operator ( ) injects all key-value mappings from the referenced anchor into the target dictionary.

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Quiz: How do you declare a reusable anchor in YAML and subsequently reference (alias) it?

Quiz: What kind of database model is Amazon DynamoDB?

Quiz: In Linux, what permissions are granted by the command &lt;code&gt;chmod 755 script.sh&lt;/code&gt;?

Quiz: What is the purpose of Django ORM `Q` objects?

Quiz: Which operator performs true linear algebra matrix multiplication between two 2D NumPy arrays in Python 3.5+?

Quiz: Which command sets global user author identity applied to all future commits on the current machine?

Quiz: Which operator is used to merge all keys from an anchored mapping into another mapping in YAML?

Quiz: In Linux, what permissions are granted by the command <code>chmod 755 script.sh</code>?