a) Networking

Definition: Design, configuration, and maintenance of LAN, WAN, VPN, and perimeter security networks.

Common platforms:

• Hardware: Cisco (Catalyst, ISR), Juniper, Fortinet, Aruba.

• Software: MikroTik RouterOS; UTM firewalls (FortiGate, pfSense).

• Uses: Connecting offices, fleets, distribution centers, and ensuring availability, redundancy, and QoS for IoT, GPS trackers, and mobile apps.

b) Linux

Definition: Server operating systems based on Linux, used in critical/logistics platforms.

Distributions:

• Enterprise: RHEL, CentOS Stream, Ubuntu LTS, SUSE.

• Uses: Web servers, databases, ETL, Big Data tools, containers (e.g., Docker).

c) Virtualization

Definition: Creating multiple virtual machines on physical hardware to optimize resources.

Technologies:

• On-premises: VMware vSphere/ESXi, Proxmox VE, Microsoft Hyper-V.

• Containers: Docker + Kubernetes/OpenShift, used for modular applications, microservices, and scalability.

d) Database

Definition: Efficient and secure management of transactional, geographic, and historical data.

Platforms:

• Relational: PostgreSQL (very common), MySQL/MariaDB, SQL Server.

• NoSQL: MongoDB, Redis, Cassandra (for large volumes of logistics and IoT data).

e) Cybersecurity

Definition: Protecting all IT assets and data against threats.

Elements:

• Firewalls (FortiGate, Palo Alto Networks), VPN, IPS/IDS (Snort, Suricata), EDR (CrowdStrike, SentinelOne).

• Identity Management: Active Directory, LDAP, MFA.

• Patching: Microsoft SCCM, Linux yum/apt.

• Auditing and SIEM: Splunk, Elastic SIEM.

f) Virtual Cloud

Definition: Use of resources (servers, networks, storage, apps) through public/private clouds.

Models:

• Public: AWS, Microsoft Azure, Google Cloud.

• Private/Hybrid: OpenStack, VMware Cloud Foundation, or Azure Stack.

• Utility: Scalability, APIs, data lakes, backup, B2B/B2C apps.