learnkdb
DocsQuestionsMock Interview⚡ Rapid Quiz
Sign inBook an interview

Getting Started

  • Getting Started with kdb+/q

Core Concepts

  • Types
  • q Terminology
  • Operations on Lists (Iterators & Amend)
  • Dictionaries
  • In Memory Tables
  • Functions
  • Attributes
  • Iterators
  • Interprocess Communication (IPC)
    IPC Overview
    Listening on a PortPractice Questions (3)
    Opening Connections (hopen)
    Message Handlers (.z Namespace)
    Inspecting Handles
    Synchronous & Asynchronous Requests
    Asynchronous Flush
    Asynchronous Callbacks
    Handle Lifecycle
    Asynchronous Broadcast
  • Memory Management & Memory Mapping
  • Persisting Tables

Data Analysis

  • qSQL
  • Joins

System Features

  • File Parsing
  • Serialization
Back to Interprocess Communication (IPC)

Interprocess Communication (IPC)

Listening on a Port

Skip to 3 practice questions

Practice questions on opening and closing a TCP port for a q process to listen on. A process is only reachable once it's actively listening on one.

Practice Questions

Test your understanding with 3 hands-on questions

01Instruct a q Process to Listen on a Port02Stop a q Process from Listening on a Port03Start a Server and Client Process on Different Ports
JL

Ready to test yourself?

Book a 60-minute mock kdb+/q interview with Jeremy Lucid, with feedback on what to work on next.

Book an interview
PreviousIPC OverviewNextOpening Connections (hopen)
learnkdb

Free, step-by-step kdb+/q learning material, from core data structures to qSQL, joins and IPC.

Content

  • Documentation
  • Practice Questions
  • Rapid Quiz

Mock interviews

  • Book an interview
  • Contact & terms
  • Privacy
  • Jeremy Lucid on LinkedIn

Account

  • Sign in
  • Dashboard

© 2026 learnkdb.com. All rights reserved.

kdb+ and q are trademarks of Kx Systems, Inc.