Senthilkumar Palani

🧠 What is the OSI Model? 🌐 7 Layers of OSI Model (Bottom to Top) 1. Physical Layer (Layer 1) – “Bits” 🔧 What it does: Deals with the raw transmission of bits (0s and 1s) Converts digital data into electrical, optical, or radio signals 📦 Examples: Cables, switches, hubs, network adapters Voltage levels, pin configurations, timing 2. Data Link Layer (Layer 2) – “Frames” 🔧 What it does: Establishes and controls logical links between two directly connected nodes Handles error detection, correction, and framing 📦 Examples: MAC (Media Access Control), Ethernet, switches ARP (Address Resolution Protocol) 3. Network Layer (Layer 3) – “Packets” 🔧 What it does: Handles routing and forwarding of packets across networks Adds IP addresses and determines the best path to reach destination 📦 Examples: Routers, IP (IPv4/IPv6), ICMP, OSPF, BGP 4. Transport Layer (Layer 4) – “Segments” 🔧 What it does: Ensures reliable data delivery (or optionally fast but unreliable) Provides error recovery, flow control, and port addressing 📦 Examples: TCP (reliable), UDP (fast but unreliable) Port numbers: HTTP (80), HTTPS (443) 5. Session Layer (Layer 5) – “Sessions” 🔧 What it does: Manages and maintains sessions or connections Controls dialogues between computers 📦 Examples: NetBIOS, RPC, PPTP Used in login sessions, remote procedure calls 6. Presentation Layer (Layer 6) – “Syntax” 🔧 What it does: Translates data formats between systems (syntax/semantics) Handles encryption, compression, and serialization 📦 Examples: SSL/TLS, JPEG, MP3, JSON, XML, ASCII ↔ Binary 7. Application Layer (Layer 7) – “Data” 🔧 What it does: Closest to the end user Interfaces directly with software applications 📦 Examples: HTTP, FTP, SMTP, DNS, SNMP, Telnet Web browsers, email clients 🔁 Analogy: Sending a Letter OSI Layer Mail Analogy Application Writing the message Presentation Translating into recipient's language Session Opening and managing the mail session Transport Choosing regular vs. express delivery Network Finding the best route to deliver Data Link Putting the letter in an envelope Physical Delivering the envelope (truck, postman) 🎯 Key Takeaways Layer 1–4: Concerned with data transport (hardware and system-level). Layer 5–7: Concerned with data usage and interpretation (software and user-level). The data unit changes from Bits → Frames → Packets → Segments → Data as it travels up/down the layers.

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How to prepare for the Linux Essentials or LPIC-1 exams? learning.lpi.org provides free training materials for teachers, learners, and partners: https://lpi.org/Z5G #OpenSource #LPI #LinuxEssentials #WebDevelopment #WDE #FOSS

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👨‍💻 Krishna Sir's Guided Linux Interview Preparation 👩‍💻 Question: Explain the significance of the /etc/fstab file. Answer: The /etc/fstab (File System Table) file is a critical configuration file in Linux. It contains details about disk drives, partitions, and how they should be mounted automatically during the system’s boot process. With /etc/fstab, administrators can: - Define mount points for file systems. - Control mount options such as read-only, read-write, or noexec. - Ensure consistency and reliability of system startup. - Avoid manual mounting after every reboot. 💡 In short: /etc/fstab makes storage management reliable, repeatable, and secure. Would you prefer using UUIDs or device names (e.g., /dev/sda1) when configuring fstab entries, and why? #Linux #LinuxInterviewQuestions #LinuxTraining #RedHat #RHCSA #RHCE #SysAdmin #DevOps #SystemAdministration #ITTraining #LinuxTips

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𝟭𝟬𝟬 𝗖# 𝗢𝗢𝗣𝘀 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 — 𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗚𝘂𝗶𝗱𝗲 (𝗕𝘆 𝗟𝗼𝗴𝗶𝗰 𝗟𝗲𝗻𝘀𝗲) A detailed and beginner-friendly C# OOPs Interview Questions Guide featuring 100 handpicked questions and answers that cover real-world scenarios, best practices, and common topics asked in top IT companies. This eBook helps you master both fundamentals and advanced concepts to crack your next .NET or C# interview confidently. 𝗗𝗼𝘄𝗻𝗹𝗼𝗮𝗱 𝘁𝗵𝗶𝘀 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 𝗘𝗯𝗼𝗼𝗸 𝗳𝗿𝗼𝗺 𝗵𝗲𝗿𝗲 :-  https://lnkd.in/gEe6r78u 💡 𝗪𝗵𝗮𝘁’𝘀 𝗜𝗻𝘀𝗶𝗱𝗲 𝘁𝗵𝗲 𝗲𝗕𝗼𝗼𝗸 This interview guide includes 100 real-world C# OOPs questions, explained with examples and interview tips to help you prepare effectively. 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀: ✅ 𝗖# 𝗙𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀: Data types, variables, methods, control structures. 🧱 𝗢𝗢𝗣 𝗖𝗼𝗻𝗰𝗲𝗽𝘁𝘀: Encapsulation, Inheritance, Abstraction, and Polymorphism. 🧩 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀: Delegates, Events, Generics, LINQ, Async/Await, Records, and Reflection. ⚙️ 𝗠𝗲𝗺𝗼𝗿𝘆 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: Garbage collection, boxing/unboxing, and stack vs heap. 🧠 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗧𝗶𝗽𝘀: Concise explanations and one-liners to make your answers impressive. 💼 𝗥𝗲𝗮𝗹-𝗪𝗼𝗿𝗹𝗱 𝗘𝘅𝗮𝗺𝗽𝗹𝗲𝘀: ASP.NET Core, EF Core, and design patterns illustrated practically. 𝗗𝗼𝘄𝗻𝗹𝗼𝗮𝗱 𝘁𝗵𝗶𝘀 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 𝗘𝗯𝗼𝗼𝗸 𝗳𝗿𝗼𝗺 𝗵𝗲𝗿𝗲 :-  https://lnkd.in/gEe6r78u If you find this helpful, please LIKE + COMMENT + REPOST so more developers can learn. #EntityFramework #CSharp #DotNetInterview #LINQ #100DaysOfCode #InterviewPreparation #CodingInterview #Logiclense #DotNetDeveloper #DotNetWorld #CSharpInterview #FullStackDeveloper #ProgrammingTips #SoftwareDevelopment #LearnCSharp #CodingForInterviews #DotNetCore #TechJobs #BackendDevelopment #DotNetLearning #DotNetCommunity #MicrosoftDotNet #DotNetCoding

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🌐 Explaination of the OSI Reference Model: The Blueprint of Networking Understanding the OSI (Open Systems Interconnection) Model is crucial for anyone in IT or networking. Here’s a quick breakdown of its 7 layers: Software Layers (Upper Layers) 7️⃣ Application Layer (Layer 7) High-level APIs (HTTP, FTP, SMTP) User-facing applications like browsers & email clients. 6️⃣ Presentation Layer (Layer 6) Translates data into a usable format (encryption, compression). 5️⃣ Session Layer (Layer 5) Manages dialogues between computers (controls termination & restarts). 4️⃣ Transport Layer (Layer 4) Ensures end-to-end communication (TCP/UDP). Hardware Layers (Lower Layers) 3️⃣ Network Layer (Layer 3) Routes data packets across networks (IPv4/IPv6). 2️⃣ Data Link Layer (Layer 2) Connects hosts on the same network (Ethernet, MAC addresses). 1️⃣ Physical Layer (Layer 1) Deals with electrical & physical specs (cables, connectors, bits). Whether you're troubleshooting, designing networks, or prepping for certifications, mastering the OSI model is a game-changer! #Cybersecurity #Security #Information #Technology #Infosec #Infotech #Infographic #CheatSheet #Wireshark #Linux #Windows #NMAP #Nessus

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📘 Scenario-Based Linux Interview Questions Shared by Exlearn Technologies Want to crack your next DevOps/Linux Admin interview or ace real-world troubleshooting? Here are 🔥 35 must-know scenario-based questions covering User Management, File Systems, SSH, Crontab, NFS, Disk, and more! ⸻ 👨‍💻 #Basic_Linux_Administration 1. User Login Issue: A user cannot log in. How will you troubleshoot? 2. File Permissions: A script runs for one user but not another—how do you fix it? 3. High CPU Usage: A process is using 100% CPU—how will you identify and stop it? 4. SSH Failure: You can’t SSH into a server—what are your next steps? 5. Disk Full: / partition is full—how will you safely free space? 6. File Corruption: A log file has junk characters—how do you recover it? 7. Crontab Not Running: A job isn’t executing—how do you debug? 8. Package Installation Fails: yum or apt isn’t working—how do you fix it? 9. Sudo Access Denied: User is in sudoers but can’t sudo—why? 10. Kernel Panic: System hit a kernel panic—how do you recover? 11. Zombie Processes: How do you identify and handle zombie processes? 12. Too Many Open Files: System throws “Too many open files”—how do you fix it? 13. High Memory Usage: A process is eating RAM—how do you locate and stop it? 14. Missing Home Directory: A user’s home is gone—how to restore it? 15. NTP Sync Issue: System time is incorrect—how do you fix NTP? 16. Find Recently Changed Files: How to find files modified in the last 10 minutes? 17. Deleted Files But Space Not Freed: What’s the issue? 18. High System Load: How do you analyze and reduce it? 19. NFS Mount Not Working: How to troubleshoot? 20. Hostname Issues: ping works, but ssh by hostname fails—why? ⸻ 💾 #File_System & Storage 21. How to extend a partition without unmounting it? 22. Steps to add a new disk to a Linux server? 23. How to check in real-time which process is writing to a file? 24. How to recover a deleted file? 25. How to check disk I/O performance? 26. A directory is consuming huge space—how to analyze it? 27. How to remount a filesystem in read-write mode without rebooting? 28. What happens if a file is deleted but is still open in a process? 29. How to create and mount a swap file? 30. How to find large unused files across partitions? 31. How to fix a corrupted filesystem using fsck? 32. What is inode exhaustion? How do you resolve it? 33. Need to copy a huge file across servers—what’s the fastest way? 34. Why do df -h and du -sh show different values? 35. How to find which directory is using the most space in /var? ⸻ 🚀 Master Linux from basics to pro-level with our Cloud & DevOps Job Assurance Program at Exlearn Technologies 🎓 Hands-on Labs | Real-Time Projects | Placement Support 📞 DM us “Linux” to get the full interview prep kit!

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Top 45 Linux Networking interview questions ⬇️ Basic Linux Networking Concepts 1.What files in Linux are used for network configuration? 2.Explain the purpose of /etc/hosts and /etc/resolv.conf. 3.What is the difference between ifconfig, ip, and nmcli commands? 4. How do you check your IP address, MAC address, and default gateway? 5. How does ARP work? How can you view the ARP cache in Linux? 6. What is the role of /etc/network/interfaces or /etc/sysconfig/network-scripts/? 7. What is the loopback interface and its significance? 8. How can you assign a static IP address to an interface temporarily and permanently? 9. What is the difference between eth0, ens33, and enp0s3 naming conventions? 10. Explain the purpose of /proc/net/ and /sys/class/net/. Network Troubleshooting 11. Expect these questions in practical rounds. 12. What commands do you use to troubleshoot connectivity in Linux? 13. How do you check which process is listening on a specific port? 14. How can you find all open TCP/UDP ports on a system? 15. What does the command ss -tulnp do? 16. How do you debug DNS issues? 17. How do you test connectivity to a specific port (e.g., telnet, nc, curl)? 18. What’s the difference between ping and traceroute? 19. What tool would you use to capture and analyze packets? How? 20. How do you check current routing table entries? 21. What’s the difference between ip route and route -n? Network Configuration and Routing 22. Focused on practical administration and routing setup. 23. How do you add a default gateway in Linux? 24. How can you configure multiple IP addresses on the same interface? 25. Explain the difference between public, private, and link-local IPs. 26. What is a static route and how do you configure one? 27. How can you make a route persistent across reboots? 28. How do you view and manipulate routing tables using ip route? 29. How do VLANs work in Linux and how can you configure one? 30. What is bonding/teaming, and how do you configure NIC bonding? 31. How can you bring an interface up or down using command line? 32. How do you configure DNS search domains in Linux? Firewalls and Security 33. Frequently asked for system and network admin roles. 34. What is iptables and what are its tables and chains? 35. What is firewalld and how does it differ from iptables? 36. How do you list current firewall rules? 37. How do you allow or deny a specific port using iptables or firewalld? 38. Explain the difference between ACCEPT, DROP, and REJECT. 39. How do NAT and port forwarding work in Linux? 40. How do you view connection tracking using conntrack? 41. What’s the purpose of /etc/sysctl.conf in networking? 42. How can you enable IP forwarding on a Linux system? 43. What’s the difference between SNAT and DNAT? Watch my youtube channel - https://lnkd.in/gkB27ZDF Connect with me on Instagram - https://lnkd.in/gYG3QNfh Do share this post with your DevOps community and friends and follow Praveen Singampalli for any job help

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🎯Disable LLMNR Multicast Name Resolution Policy – https://lnkd.in/gves9Grz 🔥Step-by-Step Intune Guide to Disable LLMNR Multicast Name Resolution for Zero Trust Baseline 🔥Real Word Example of LLMNR Multicast Name Resolution Policy 🔥Provide Host Name Resolution for Devices on the Same Local Network Subnet 🔥Preventing the Theft of User Credentials 🔥How this Policy Helps Admins 🔥Client Side Behavior

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🔍 𝐃𝐞𝐦𝐲𝐬𝐭𝐢𝐟𝐲𝐢𝐧𝐠 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 𝐢𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: 𝐅𝐫𝐨𝐦 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 𝐭𝐨 𝐂𝐨𝐩𝐲-𝐎𝐧-𝐖𝐫𝐢𝐭𝐞 (𝐂𝐎𝐖) 𝐢𝐧 𝐕𝐢𝐫𝐭𝐮𝐚𝐥 𝐌𝐞𝐦𝐨𝐫𝐲 Understanding when and how memory addresses are resolved is essential in system-level programming. From function calls to memory management, binding plays a crucial role in performance, flexibility, and security. 🧠 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐁𝐢𝐧𝐝𝐢𝐧𝐠? Binding refers to the process of associating a symbolic reference (like a function name fun()) with its actual memory address (e.g., 200). In assembly, it might look like call 200. But when this address is determined decides the type of binding. 🧷 𝐓𝐲𝐩𝐞𝐬 𝐨𝐟 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 1️⃣ 𝐄𝐚𝐫𝐥𝐲 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 (𝐂𝐨𝐦𝐩𝐢𝐥𝐞-𝐓𝐢𝐦𝐞 𝐁𝐢𝐧𝐝𝐢𝐧𝐠) 1) Address is fixed during compilation. 2) The linker assigns the actual address in the final executable. 3)✅ Fast execution, ❌ less flexibility. 2️⃣ 𝐋𝐚𝐭𝐞 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 (𝐑𝐮𝐧-𝐓𝐢𝐦𝐞 𝐁𝐢𝐧𝐝𝐢𝐧𝐠) 1) Address resolved at runtime, often via virtual tables. 2) Used heavily in OOP languages like C++ (with virtual functions). 3️⃣ 𝐋𝐚𝐭𝐞 𝐋𝐚𝐭𝐞 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 (𝐃𝐞𝐦𝐚𝐧𝐝 𝐏𝐚𝐠𝐢𝐧𝐠) 1) Applies in virtual memory. 2) Virtual address exists, but physical page not yet in RAM. 3) Access triggers a Page Fault, OS loads page from disk. 🧠 Think of it like: "We know where it should go, but we haven't loaded it yet." 4️⃣ 𝐋𝐚𝐭𝐞 𝐋𝐚𝐭𝐞 𝐋𝐚𝐭𝐞 𝐁𝐢𝐧𝐝𝐢𝐧𝐠 (𝐂𝐨𝐩𝐲-𝐎𝐧-𝐖𝐫𝐢𝐭𝐞 / 𝐂𝐎𝐖) 1) Memory pages are shared after fork(), marked as read-only. 2) When a process writes to a page, the OS copies it, creating a private copy. 💡 This saves RAM and avoids unnecessary duplication. 🧪 𝐄𝐱𝐚𝐦𝐩𝐥𝐞 𝐅𝐥𝐨𝐰: 🧠fork() → child shares memory 🧠Child tries to write → OS copies that page 🧠This is lazy allocation at the write level ⚠️ 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐚 𝐏𝐚𝐠𝐞 𝐅𝐚𝐮𝐥𝐭? A Page Fault occurs when a program tries to access a page: 1) That is in virtual memory 💾 2) But not currently in RAM 🧠 📌 𝐓𝐡𝐞 𝐎𝐒: ✔Pauses the process ✔Loads the page from disk ✔Maps it to physical memory ✔Resumes the process 🔚 𝐅𝐢𝐧𝐚𝐥 𝐓𝐡𝐨𝐮𝐠𝐡𝐭𝐬 Binding is not just a compiler thing — it’s a core concept in system design, OS internals, and performance optimization. Whether you’re diving into virtual memory, working with fork(), or debugging runtime behavior, understanding these levels of binding gives you a deeper insight into how systems truly work behind the scenes. #Unix #EarlyBinding #LateBinding #PageFault #VirtualMemory #OperatingSystems #Linux #SystemDesign #TechExplained #MauriceJBach

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𝐋𝐈𝐍𝐔𝐗 𝐍𝐨𝐭𝐞𝐬 (𝐌𝐨𝐝𝐮𝐥𝐞 𝟓): 𝐏𝐚𝐜𝐤𝐚𝐠𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 ! This module explains how software is installed, updated, and managed efficiently in Linux systems. What you’ll learn in these notes: 🔹 What is package management ? 🔹 Why package management matters ? 🔹 Types of package management systems & common managers 🔹 Core concepts & functions of package managers 🔹 Common package management commands 🔹 RPM-based systems (RPM / YUM / DNF) Package management is a core Linux skill that helps keep systems secure, stable, and up to date. #cyberdefentech #cds #linux #packagemanagement #linuxcommands #yum #dnf #rpm #kaliLinux #linuxadmin #cybersecurity #ethicalhacking #learnlinux #sysadmin

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This felt like a rare moment of clarity in an otherwise noisy learning space Archy Gupta 🧭 System design isn’t about memorising diagrams, it’s about building mental models 🧩 Breaking concepts into focused reads lowers the intimidation barrier significantly 🧠 Patterns matter more than tools — these topics show up everywhere, repeatedly ⏱️ Consistent, small learning beats binge-watching one massive resource 🛠️ Good engineers think in trade-offs, and this list quietly trains that muscle 📈 Progress in system design comes from layering understanding, not rushing depth Thoughtfully curated and very learner-centric — this is the kind of post people actually come back to. Credit where it’s due for highlighting the original author and keeping the focus on learning, not hype. Thanks for sharing something genuinely useful for the community. #SystemDesign #EngineeringGrowth #LearningMindset #CareerDevelopment #SoftwareEngineering

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Preparing for a Linux interview or looking to strengthen your fundamentals? This comprehensive “Linux Interview Questions” guide, published by InterviewBit, covers everything from Linux internals and networking to essential commands and comparisons with other operating systems. Some highlights include: Key Linux OS components (Kernel, Shell, System Utilities) Important commands like grep, netstat, ping, pwd, and more File permissions, process states, daemons, and swap space Networking topics such as NIC teaming, bonding modes, and default ports Differences between Linux, Unix, BASH, and DOS A valuable resource for both freshers and experienced professionals aiming to ace Linux-related interviews or solidify their knowledge base. Do you think Linux interview prep should focus more on command-line mastery or system design concepts? Let’s discuss in the comments. Full document by InterviewBit: Linux Interview Questions #Linux #LinuxAdmin #LinuxCommands #LinuxInterview #SysAdmin #DevOps #Networking #smenode #smenodelabs #smenodeacademy

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**UVM RAL Deep Dive: Register Prediction & Access Policies** Mastering UVM RAL is crucial. Let's test your understanding of register field access policies (W1C, RO, RW) and `UVM_AUTO_PREDICT`. **Scenario:** DUT `STATUS` register (`0x100`): `ERROR_FLAG` (bit 0, W1C), `BUSY_STATUS` (bit 1, RO), `CONFIG_DONE` (bit 2, RW). RAL uses `UVM_AUTO_PREDICT`. **Steps:** 1. Initial: DUT & RAL `0x0`. 2. DUT: `ERROR_FLAG=1`, `BUSY_STATUS=1`. 3. **B:** Front-door read. ```systemverilog ral_model.status_reg.read(status, read_val, UVM_FRONTDOOR); ``` 4. **C:** Front-door write: `ERROR_FLAG=1` (clear), `CONFIG_DONE=1`, `BUSY_STATUS=0`. ```systemverilog ral_model.status_reg.error_flag.set(1); ral_model.status_reg.config_done.set(1); ral_model.status_reg.busy_status.set(0); ral_model.status_reg.get_desired_value(write_val); ral_model.status_reg.write(status, write_val, UVM_FRONTDOOR); ``` 5. **D:** Immediate front-door read. ```systemverilog ral_model.status_reg.read(status, read_val, UVM_FRONTDOOR); ``` 6. DUT: `BUSY_STATUS=0`. 7. **F:** Back-door write `CONFIG_DONE=0`. ```systemverilog ral_model.status_reg.config_done.set(0); ral_model.status_reg.update(status, UVM_BACKDOOR); ``` 8. **G:** Front-door read. ```systemverilog ral_model.status_reg.read(status, read_val, UVM_FRONTDOOR); ``` **Your Task:** For B, D, G, determine: a) DUT value, b) `read_val`, c) RAL mirrored value (all hex). **The Trap: Common Pitfalls** * W1C prediction: `set(1)` on W1C predicts `0`. * RO field writes: DUT ignores; RAL retains previous mirror. * `UVM_AUTO_PREDICT`: Nuances for reads vs. writes (policy-based). * Stale mirrors: Internal DUT changes don't auto-update RAL. * `update(UVM_BACKDOOR)`: BD write + BD read for synchronization. **The Solution:** Bits: `[CONFIG_DONE (2), BUSY_STATUS (1), ERROR_FLAG (0)]`. * **Initial:** DUT: `0x0`, RAL Mirrored: `0x0` * **Step A:** DUT: `0x3`, RAL Mirrored: `0x0` * **Step B:** a. `0x3`, b. `0x3`, c. `0x3` * **Step C:** DUT: `0x6`, RAL Mirrored: `0x6` * **Step D:** a. `0x6`, b. `0x6`, c. `0x6` * **Step E:** DUT: `0x4`, RAL Mirrored: `0x6` * **Step F:** DUT: `0x0`, RAL Mirrored: `0x0` * **Step G:** a. `0x0`, b. `0x0`, c. `0x0` #SystemVerilog #UVM #DesignVerification #FPGA #ASIC #TheRALSpecialist

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Google 68-page ultimate prompt engineering guide (Focused on API user) https://lnkd.in/d_Wfxa2i https://lnkd.in/dq4k4U_B Goes deep on structure, formatting, config settings, and real examples. Here’s what it covers: 1. How to get predictable, reliable output using temperature, top-p, and top-k 2. Prompting techniques for APIs, including system prompts, chain-of-thought, and ReAct (i.e., reason and act) 3. How to write prompts that return structured outputs like JSON or specific formats #AI #promptengineering

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