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201-450 VCE test - LPIC-2 test 201, Part 1 of 2, version 4.5 Updated: 2023

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Exam Code: 201-450 LPIC-2 test 201, Part 1 of 2, version 4.5 VCE test November 2023 by Killexams.com team

201-450 LPIC-2 test 201, Part 1 of 2, version 4.5

Exam Title :
LPIC-2 Linux Engineer

Exam ID :
201-450

90 mins

Questions in test :
60

Passing Score :
500 / 800

Exam Center :
LPI Marketplace

Real Questions :
LPI LPIC-2 Real Questions

VCE VCE test :
LPI 201-450 Certification VCE Practice Test






Topic 200: Capacity Planning

200.1 Measure and Troubleshoot Resource Usage

Weight: 6

Description: Candidates should be able to measure hardware resource and network bandwidth, identify and troubleshoot resource problems.



Key Knowledge Areas:

- Measure CPU usage

- Measure memory usage

- Measure disk I/O

- Measure network I/O

- Measure firewalling and routing throughput

- Map client bandwidth usage

- Match / correlate system symptoms with likely problems

- Estimate throughput and identify bottlenecks in a system including networking



The following is a partial list of the used files, terms and utilities:

- iostat

- netstat

- w

- top

- sar

- processes blocked on I/O

- blocks out

- vmstat

- pstree, ps

- Isof

- uptime

- swap

- blocks in



200.2 Predict Future Resource Needs

Weight: 2

Description: Candidates should be able to monitor resource usage to predict future resource needs.



Key Knowledge Areas:

- Use monitoring and measurement tools to monitor IT infrastructure usage.

- Predict capacity break point of a configuration

- Observe growth rate of capacity usage

- Graph the trend of capacity usage

- Awareness of monitoring solutions such as Icinga2, Nagios, collectd, MRTG and Cacti



The following is a partial list of the used files, terms and utilities:

- diagnose

- predict growth

- resource exhaustion



Topic 201: Linux Kernel

201.1 Kernel Components

Weight: 2

Description: Candidates should be able to utilize kernel components that are necessary to specific hardware, hardware drivers, system resources and requirements. This objective includes implementing different types of kernel images, identifying stable and development kernels and patches, as well as using kernel modules.



Key Knowledge Areas:

- Kernel 2.6.x, 3.x and 4.x documentation



Terms and Utilities:

- /usr/src/linux/

- /usr/src/linux/Documentation/

- zImage

- bzImage

- xz compression



201.2 Compiling a kernel

Weight: 3

Description: Candidates should be able to properly configure a kernel to include or disable specific features of the Linux kernel as necessary. This objective includes compiling and recompiling the Linux kernel as needed, updating and noting changes in a new kernel, creating an initrd image and installing new kernels.



Key Knowledge Areas:

- /usr/src/linux/

- Kernel Makefiles

- Kernel 2.6.x/3.x make targets

- Customize the current kernel configuration.

- Build a new kernel and appropriate kernel modules.

- Install a new kernel and any modules.

- Ensure that the boot manager can locate the new kernel and associated files.

- Module configuration files

- Use DKMS to compile kernel modules.

- Awareness of dracut



Terms and Utilities:

- mkinitrd

- mkinitramfs

- make

- make targets (all, config, xconfig, menuconfig, gconfig, oldconfig, mrproper, zImage, bzImage, modules, modules_install, rpm-pkg, binrpm-pkg, deb-pkg)

- gzip

- bzip2

- module tools

- /usr/src/linux/.config

- /lib/modules/kernel-version/

- depmod

- dkms



201.3 Kernel runtime management and troubleshooting

Weight: 4

Description: Candidates should be able to manage and/or query a 2.6.x, 3.x or 4.x kernel and its loadable modules. Candidates should be able to identify and correct common boot and run time issues. Candidates should understand device detection and management using udev. This objective includes troubleshooting udev rules.


Key Knowledge Areas:
- Use command-line utilities to get information about the currently running kernel and kernel modules

- Manually load and unload kernel modules

- Determine when modules can be unloaded

- Determine what parameters a module accepts

- Configure the system to load modules by names other than their file name.

- /proc filesystem

- Content of /, /boot/ , and /lib/modules/

- Tools and utilities to analyze information about the available hardware

- udev rules



Terms and Utilities:

- /lib/modules/kernel-version/modules.dep

- module configuration files in /etc/

- /proc/sys/kernel/

- /sbin/depmod

- /sbin/rmmod

- /sbin/modinfo

- /bin/dmesg

- /sbin/lspci

- /usr/bin/lsdev

- /sbin/lsmod

- /sbin/modprobe

- /sbin/insmod

- /bin/uname

- /usr/bin/lsusb

- /etc/sysctl.conf, /etc/sysctl.d/

- /sbin/sysctl

- udevmonitor

- udevadm monitor

- /etc/udev/



Topic 202: System Startup

202.1 Customizing SysV-init system startup

Weight: 3

Description: Candidates should be able to query and modify the behaviour of system services at various targets / run levels. A thorough understanding of the systemd, SysV Init and the Linux boot process is required. This objective includes interacting with systemd targets and SysV init run levels.



Key Knowledge Areas:

- Systemd

- SysV init

- Linux Standard Base Specification (LSB)



Terms and Utilities:

- /usr/lib/systemd/

- /etc/systemd/

- /run/systemd/

- systemctl

- systemd-delta

- /etc/inittab

- /etc/init.d/

- /etc/rc.d/

- chkconfig

- update-rc.d

- init and telinit



202.2 System Recovery

Weight: 4

Description: Candidates should be able to properly manipulate a Linux system during both the boot process and during recovery mode. This objective includes using both the init utility and init-related kernel options. Candidates should be able to determine the cause of errors in loading and usage of bootloaders. GRUB version 2 and GRUB Legacy are the bootloaders of interest. Both BIOS and UEFI systems are covered.



Key Knowledge Areas:

- BIOS and UEFI

- NVMe booting

- GRUB version 2 and Legacy

- grub shell

- boot loader start and hand off to kernel

- kernel loading

- hardware initialisation and setup

- daemon/service initialisation and setup

- Know the different boot loader install locations on a hard disk or removable device.

- Overwrite standard boot loader options and using boot loader shells.

- Use systemd rescue and emergency modes.



Terms and Utilities:

- mount

- fsck

- inittab, telinit and init with SysV init

- The contents of /boot/, /boot/grub/ and /boot/efi/

- EFI System Partition (ESP)

- GRUB

- grub-install

- efibootmgr

- UEFI shell

- initrd, initramfs

- Master boot record

- systemctl



202.3 Alternate Bootloaders

Weight: 2

Description: Candidates should be aware of other bootloaders and their major features.



Key Knowledge Areas:

- SYSLINUX, ISOLINUX, PXELINUX

- Understanding of PXE for both BIOS and UEFI

- Awareness of systemd-boot and U-Boot



Terms and Utilities:

- syslinux

- extlinux

- isolinux.bin

- isolinux.cfg

- isohdpfx.bin

- efiboot.img

- pxelinux.0

- pxelinux.cfg/

- uefi/shim.efi

- uefi/grubx64.efi



Topic 203: Filesystem and Devices

203.1 Operating the Linux filesystem

Weight: 4

Description: Candidates should be able to properly configure and navigate the standard Linux filesystem. This objective includes configuring and mounting various filesystem types.



Key Knowledge Areas:

- The concept of the fstab configuration

- Tools and utilities for handling swap partitions and files

- Use of UUIDs for identifying and mounting file systems

- Understanding of systemd mount units



Terms and Utilities:

- /etc/fstab

- /etc/mtab

- /proc/mounts

- mount and umount

- blkid

- sync

- swapon

- swapoff



203.2 Maintaining a Linux filesystem​

Weight: 3

Description: Candidates should be able to properly maintain a Linux filesystem using system utilities. This objective includes manipulating standard filesystems and monitoring SMART devices.



Key Knowledge Areas:

- Tools and utilities to manipulate and ext2, ext3 and ext4

- Tools and utilities to perform basic Btrfs operations, including subvolumes and snapshots

- Tools and utilities to manipulate XFS

- Awareness of ZFS



Terms and Utilities:

- mkfs (mkfs.*)

- mkswap

- fsck (fsck.*)

- tune2fs, dumpe2fs and debugfs

- btrfs, btrfs-convert

- xfs_info, xfs_check, xfs_repair, xfsdump and xfsrestore

- smartd, smartctl



203.3 Creating and configuring filesystem options

Weight: 2

Description: Candidates should be able to configure automount filesystems using AutoFS. This objective includes configuring automount for network and device filesystems. Also included is creating filesystems for devices such as CD-ROMs and a basic feature knowledge of encrypted filesystems.



Key Knowledge Areas:

- autofs configuration files

- Understanding of automount units

- UDF and ISO9660 tools and utilities

- Awareness of other CD-ROM filesystems (HFS)

- Awareness of CD-ROM filesystem extensions (Joliet, Rock Ridge, El Torito)

- Basic feature knowledge of data encryption (dm-crypt / LUKS)



Terms and Utilities:

- /etc/auto.master

- /etc/auto.[dir]

- mkisofs

- cryptsetup



Topic 204: Advanced Storage Device Administration

204.1 Configuring RAID

Weight: 3

Description: Candidates should be able to configure and implement software RAID. This objective includes using and configuring RAID 0, 1 and 5.



Key Knowledge Areas:

- Software raid configuration files and utilities



Terms and Utilities:

- mdadm.conf

- mdadm

- /proc/mdstat

- partition type 0xFD



204.2 Adjusting Storage Device Access

Weight: 2

Description: Candidates should be able to configure kernel options to support various drives. This objective includes software tools to view & modify hard disk settings including iSCSI devices.



Key Knowledge Areas:

- Tools and utilities to configure DMA for IDE devices including ATAPI and SATA

- Tools and utilities to configure Solid State Drives including AHCI and NVMe

- Tools and utilities to manipulate or analyse system resources (e.g. interrupts)

- Awareness of sdparm command and its uses

- Tools and utilities for iSCSI

- Awareness of SAN, including relevant protocols (AoE, FCoE)



Terms and Utilities:

- hdparm, sdparm

- nvme

- tune2fs

- fstrim

- sysctl

- /dev/hd*, /dev/sd*, /dev/nvme*

- iscsiadm, scsi_id, iscsid and iscsid.conf

- WWID, WWN, LUN numbers



204.3 Logical Volume Manager

Weight: 3

Description: Candidates should be able to create and remove logical volumes, volume groups, and physical volumes. This objective includes snapshots and resizing logical volumes.



Key Knowledge Areas:

- Tools in the LVM suite

- Resizing, renaming, creating, and removing logical volumes, volume groups, and physical volumes

- Creating and maintaining snapshots

- Activating volume groups



Terms and Utilities:

- /sbin/pv*

- /sbin/lv*

- /sbin/vg*

- mount

- /dev/mapper/

- lvm.conf



Topic 205: Network Configuration

205.1 Basic networking configuration

Weight: 3

Description: Candidates should be able to configure a network device to be able to connect to a local, wired or wireless, and a wide-area network. This objective includes being able to communicate between various subnets within a single network including both IPv4 and IPv6 networks.



Key Knowledge Areas:

- Utilities to configure and manipulate ethernet network interfaces

- Configuring basic access to wireless networks



Terms and Utilities:

- ip

- ifconfig

- route

- arp

- iw

- iwconfig

- iwlist



205.2 Advanced Network Configuration and Troubleshooting

Weight: 4

Description: Candidates should be able to configure a network device to implement various network authentication schemes. This objective includes configuring a multi-homed network device and resolving communication problems.



Key Knowledge Areas:

- Utilities to manipulate routing tables

- Utilities to configure and manipulate ethernet network interfaces

- Utilities to analyze the status of the network devices

- Utilities to monitor and analyze the TCP/IP traffic



Terms and Utilities:

- ip

- ifconfig

- route

- arp

- ss

- netstat

- lsof

- ping, ping6

- nc

- tcpdump

- nmap



205.3 Troubleshooting Network Issues

Weight: 4

Description: Candidates should be able to identify and correct common network setup issues, to include knowledge of locations for basic configuration files and commands.



Key Knowledge Areas:

- Location and content of access restriction files

- Utilities to configure and manipulate ethernet network interfaces

- Utilities to manage routing tables

- Utilities to list network states.

- Utilities to gain information about the network configuration

- Methods of information about the recognized and used hardware devices

- System initialization files and their contents (SysV init process)

- Awareness of NetworkManager and its impact on network configuration



Terms and Utilities:

- ip

- ifconfig

- route

- ss

- netstat

- /etc/network/, /etc/sysconfig/network-scripts/

- ping, ping6

- traceroute, traceroute6

- mtr

- hostname

- System log files such as /var/log/syslog, /var/log/messages and the systemd journal

- dmesg

- /etc/resolv.conf

- /etc/hosts

- /etc/hostname, /etc/HOSTNAME

- /etc/hosts.allow, /etc/hosts.deny



Topic 206: System Maintenance

206.1 Make and install programs from source

Weight: 2

Description: Candidates should be able to build and install an executable program from source. This objective includes being able to unpack a file of sources.



Key Knowledge Areas:

- Unpack source code using common compression and archive utilities

- Understand basics of invoking make to compile programs

- Apply parameters to a configure script

- Know where sources are stored by default



Terms and Utilities:

- /usr/src/

- gunzip

- gzip

- bzip2

- xz

- tar

- configure

- make

- uname

- install

- patch



206.2 Backup operations

Weight: 3

Description: Candidates should be able to use system tools to back up important system data.



Key Knowledge Areas:

- Knowledge about directories that have to be include in backups

- Awareness of network backup solutions such as Amanda, Bacula, Bareos and BackupPC

- Knowledge of the benefits and drawbacks of tapes, CDR, disk or other backup media

- Perform partial and manual backups.

- Verify the integrity of backup files.

- Partially or fully restore backups.

Terms and Utilities:

- /bin/sh

- dd

- tar

- /dev/st* and /dev/nst*

- mt

- rsync



206.3 Notify users on system-related issues

Weight: 1

Description: Candidates should be able to notify the users about current issues related to the system.



Key Knowledge Areas:

- Automate communication with users through logon messages

- Inform active users of system maintenance



Terms and Utilities:

- /etc/issue

- /etc/issue.net

- /etc/motd

- wall

- /sbin/shutdown

- systemctl
LPIC-2 test 201, Part 1 of 2, version 4.5
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LPIC-2 test 201, Part 1 of 2, version 4.5
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Question: 156
What is the purpose of a system mount unit?
A. It is used by the command systemd-mount and allows users to mount partitions to
mount points of their choice
B. It is used only to mount network file systems to local mount points. It cannot be used
for local media
C. It is created by the command systemd-fstab-generator to integrate entries from
/etc/fstab into the system boot process
D. It is used by the command mount when using system to mount and unmount file
systems
Answer: A
Question: 157
In which directory tree are files modified when changing kernel parameters using the
command sysctl?
A. /sys/kernel/
B. /proc/kernel/
C. /proc/sys/
D. /lib/sys/
E. /sys/proc/
Answer: C
Question: 158
Which command is used to install a GRUB boot loader into the master boot record?
A. grub-install
B. grub-mkconfig
C. grub-install-mbr
D. grub-glue-mbr
E. grub-mbr-setup
Answer: A
Question: 159
Which of the following commands restores only those files containing lpi in their name
from the archive lpifiles.tar.gz?
A. tar xvzf lpifiles.tar.gz --wildcards *lpi*
B. tar xvzwf lpifiles.tar.gz *lpi*
C. tar -xvfz lpifiles.tar.gz --deep *lpi*
D. tar -xvzf lpifiles.tar.gz --subdirs *lpi*
E. tar xvzf lpifiles.tar.gz --globbing *lpi*
Answer: A
Question: 160
CORRECT TEXT
Which is the main configuration file for the SystemV init process? (Specify the full
name of the file, including path.)
Answer: /etc/inittab
Question: 161
What effect does the f option to the update-rc.d command have on files in the
/etc/rcX.d/ and /etc/init.d/ directories?
A. It will force the removal of the symlinks in /etc/rcX.d/ even when the links are read
only
B. It will remove both the symlinks in /etc/rcX.d/ and the init script in /etc/init.d/
C. It will remove the init script in /etc/init.d/ and the symlinks in /etc/rcX.d/ and update
the package information of installed files
D. It will force the removal of symlinks in /etc/rcX.d/ even if the corresponding init
script still exists in /etc/init.d/
Answer: D
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LPI version VCE test - BingNews https://killexams.com/pass4sure/exam-detail/201-450 Search results LPI version VCE test - BingNews https://killexams.com/pass4sure/exam-detail/201-450 https://killexams.com/exam_list/LPI Placement Test Practice Placement Test Practice

Being prepared is the best way to ease the stress of test taking. If you are having difficulty scheduling your Placement Test, please contact the UNG Testing Office.

If you have a red yes in any Placement Test Required row on your Check Application Status page in Banner, read the information below relating to the area in which you have the red yes.

Establishing Connection...

Mon, 05 Dec 2022 08:03:00 -0600 en text/html https://ung.edu/learning-support/placement-test-practice.php/placement-test-practice.php
Organization Skills Test (Version For Workers & Students)

Do you find yourself wishing you had more time to do the things that really matter to you? Are you constantly looking for items that you've misplaced? Do you have trouble prioritizing your daily activities and life? Few skills in life are more important to overall success than organizational skills. Without them, life becomes overwhelming and intimidating; with them, almost anything is possible. Besides being a skill that can be applied to practically every aspect of one's life, organization is fortunately a learned behavior. While it takes conscious effort to Excellerate one's organizational skills, it is certainly possible and everyone has the ability to do so.

This organization skills test is made up of two types of questions: scenarios and self-assessment. For each scenario, answer according to how you would most likely behave in a similar situation. For the self-assessment questions, indicate the degree to which the given statements apply to you. In order to receive the most accurate results, please answer each question as honestly as possible.

After finishing this test you will receive a FREE snapshot report with a summary evaluation and graph. You will then have the option to purchase the full results for $6.95

This test is intended for informational and entertainment purposes only. It is not a substitute for professional diagnosis or for the treatment of any health condition. If you would like to seek the advice of a licensed mental health professional you can search Psychology Today's directory here.

Tue, 03 Apr 2018 16:50:00 -0500 en-US text/html https://www.psychologytoday.com/us/tests/career/organization-skills-test-version-workers-students Mental Speed Test - Version 1

5 minutes

The following test is meant to assess your mental speed - how quickly you can process information and make decisions based upon that information. The exercise consists of word/image pairs and simple mathematical equations or number sequences. If a pair matches, click the "Correct" button (the left arrow key on your keyboard). If the pair does not match, click the "Incorrect" button (the right arrow key on your keyboard). However, if the word "Opposite" appears at the top of the screen, you need to reverse your answer.

In the first example (pear and star), the answer would be incorrect ("Incorrect"). For the second example, although it is an exact match, the word Opposite appears at the top of the screen, so rather than choosing "Correct" you would have to choose "Incorrect"

For the mathematical equations simply indicate whether the answer is correct or incorrect. For the number sequences indicate whether the number in red correctly completes the sequence.

As you can see, the first equation is wrong - the answer should be 5, so in this case, you would choose "incorrect". However, although the number sequence is also wrong (the answer should be 22), the word Opposite requires you to reverse your answer, so in this case you would choose "Correct" rather than "Incorrect".

Remember, you are being timed, so try to answer as quickly as possible - and remember to reverse your answer when the word "Opposite" appears.

After finishing the test, you will find out how accurate and fast you were. Have fun!

This test is intended for informational and entertainment purposes only. It is not a substitute for professional diagnosis or for the treatment of any health condition. If you would like to seek the advice of a licensed mental health professional you can search Psychology Today's directory here.

Wed, 20 Apr 2011 22:59:00 -0500 en-US text/html https://www.psychologytoday.com/us/tests/iq/mental-speed-test-version-1
Practice Test: Synonyms and Antonyms

Tackle these vocabulary basics in a short practice test: synonyms and antonyms. Synonyms are words that have a similar meaning, and antonyms are words with opposite meanings. Students in first and second grade will think deeply about word meaning as they search for the matching synonym or antonym in each row of this reading and writing worksheet.

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Sun, 27 Aug 2023 07:06:00 -0500 en text/html https://www.education.com/worksheet/article/practice-test-synonyms-antonyms/
Practice Test: Telling Time

Reading an old-fashioned clock takes practice. Hand over this VCE test for telling time to your second graders and see if they can read all six clocks. Are they able to read time to the nearest five minutes? To the nearest half-hour? Find out in this low-pressure worksheet that features a helpful explanation about reading time.

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Mon, 04 Apr 2016 08:59:00 -0500 en text/html https://www.education.com/worksheet/article/practice-test-telling-time/
Army inching closer to PrSM fielding with ‘successful’ qualification test flight
PrSM launch

The Army’s PrSM Inc 1 weapon is seen during a previous test launch. (Lockheed Martin)

WASHINGTON — The US Army is one step closer to fielding its new Precision Strike Missile (PrSM) to soldiers after a “successful” short-range test of the weapon this week at White Sands Missile Range in New Mexico, according to the service and the prime contractor. 

Lockheed Martin has been designing and testing the PrSM Increment 1 for several years, and on Monday the Army said it launched the weapon from the M142 High Mobility Artillery Rocket System (HIMARS) for its first production qualification test flight.

“Preliminary results from the test show the Precision Strike Missile Increment 1 missile performed nominally in terms of predicted flight trajectory, lethality, near-vertical engagement angle, and height of burst,” the service wrote. “A final flight test report is anticipated in December 2023.”

Lockheed said in a separate statement today that it cannot disclose the distance the missile flew to hit the target, but that it was the “shortest range flown” to date at less than 85 kilometers thus “demonstrating the system’s continued accuracy from launch to impact.”

“While not PrSM’s primary mission range, the short-range flight represents the most stressful, dynamic environment for the missile as it maneuvers at hypersonic speeds to align to the target,” the company wrote. “This test verifies structural integrity of the missile and trajectory control.”

If the final test report is also glowing, the service can begin accepting early operational capability missiles before the start of 2024.

The initial version of the PrSM is expected to replace the MGM-140 Army Tactical Missile System (ATACMS), hit targets at least 500 km away and designed to be launched from both the HIMARS and the M270A2 Multiple Launch Rocket System (MLRS). 

Lockheed has said it has received three production contracts to produce additional early operational capability missiles, with the last one awarded in September.

When the Pentagon released its fiscal 2024 budget request in March, the Army acquisition objective for PrSM Inc 1 was for 3,986 missiles. However, since then the White House has decided to begin shipping ATACMS to Ukraine; Army acquisition chief Doug Bush told reporters the goal will likely be to replace the ATACMS stockpile with PrSM, and so the Army could in theory look to increase its PrSM buy to backfill ATACMS.

However, the Army is also eyeing enhanced versions of the weapon, including an Increment 2 with a multimode seeker, known as the Land-Based Anti-Ship Missile (LBASM) seeker, and a PrSM Inc 3 which would seek to add in enhanced lethality payloads.

Earlier this year the service also tapped Lockheed Martin team and a Raytheon Technologies-Northrop Grumman team to work on competing PrSM Inc 4 designs that can fly more than 1,000 km, possibly double the range of the current version.

Thu, 16 Nov 2023 07:04:00 -0600 en-US text/html https://breakingdefense.com/2023/11/army-inching-closer-to-prsm-fielding-with-successful-qualification-test-flight/
Facebook will let creators test different versions of Reels No result found, try new keyword!On Reels, creators will be able to set up to four different thumbnails and captions for a single video in a test. According to images of the feature, different versions will be shown to separate g ... Thu, 02 Nov 2023 11:22:00 -0500 en-us text/html https://www.msn.com/ What the GRE Test Is and How to Prepare No result found, try new keyword!Subject tests are offered in mathematics, physics and psychology, and ETS provides free digital practice books for each. In September 2023, ETS will launch new versions of the physics and ... Mon, 25 Jun 2018 03:17:00 -0500 https://www.usnews.com/education/best-graduate-schools/articles/what-the-gre-test-is-and-how-to-prepare Test versions of electromagnetic coils for space exploration

These are test versions of electromagnetic coils—versatile tools for space missions—which have been 3D printed in pure copper to produce the required magnetic field shapes.

These are the outputs of just one of more than 2,000 research contracts undertaken during the last three decades of ESA's General Support Technology Programme, working with European industry and academia to finalize promising technologies for spaceflight and the open market.

Electromagnetic coils are variously used as part of electric motors, magnetic bearings and magnetorquers for satellite attitude control. An end-to-end process to produce these coils based on laser powder bed fusion 3D printing was developed for ESA in a project led by Zarm Technik in Germany.

Currently celebrating its 30th anniversary, GSTP began in 1993 as an integral part of ESA's long-term plan, ensuring the Agency kept ahead of technologies it might need. It has evolved into a cornerstone of ESA's technology efforts.

GSTP is an optional ESA program, but its effectiveness is such that every ESA Member States chooses to subscribe to it.

Provided by European Space Agency

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