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Top Questions People Ask About Pandas, NumPy, Matplotlib & Scikit-learn — Answered!

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 Whether you're a beginner or brushing up on your skills, these are the real-world questions Python learners ask most about key libraries in data science. Let’s dive in! 🐍 🐼 Pandas: Data Manipulation Made Easy 1. How do I handle missing data in a DataFrame? df.fillna( 0 ) # Replace NaNs with 0 df.dropna() # Remove rows with NaNs df.isna(). sum () # Count missing values per column 2. How can I merge or join two DataFrames? pd.merge(df1, df2, on= 'id' , how= 'inner' ) # inner, left, right, outer 3. What is the difference between loc[] and iloc[] ? loc[] uses labels (e.g., column names) iloc[] uses integer positions df.loc[ 0 , 'name' ] # label-based df.iloc[ 0 , 1 ] # index-based 4. How do I group data and perform aggregation? df.groupby( 'category' )[ 'sales' ]. sum () 5. How can I convert a column to datetime format? df[ 'date' ] = pd.to_datetime(df[ 'date' ]) ...
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Internet of Things Basics (Part-7)

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The connecting devices and getting raw data from multiples sources, and sending this data to analysis is a major concept in IoT. Devices can be connected through Protocols.

What is protocol...

I want to share some information on advanced IP based Protocols. Read my previous post on IOT.

The role of IPv6- It is advanced in the Range of internet protocols. The main function is it supports Mobility.

This is not easily achievable with IPv4 for a number of reasons; however, MIPv6 described in RFC 3775, "Mobility Support in IPv6" (June 2004), among others, facilitates this task.

RFC 3775 is known as the "MIPv6 base specification." RFCs are specifications and related materials published by the Internet Engineering Task Force (IETF). IPv6 mobility, specifically MIPv6, relies on IPv6 capabilities.

RFC 3775 notes that without specific support for mobility in IPv6, packets destined to an MN would not be able to reach it while the MN is away from its home network.

In order to continue communication in spite of its movement, an MN could change its IP address each time it moves to a new link, but the MN would then not be able to maintain transport and higher-layer connections when it changes location.
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Hadoop QUIZ-1 Answers:
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1.D
2.C
3.D
4.D
5.C
6.D
7.A
8.B
9.B
10.C
11.C
12.B
13.C
14.C

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