==== Windows and Active Directory ==== * How do you qualify your Active Directory administration experience (Domain migrations? GPO? Management of the structure, of the users?) * What is the name of the tool used to create the accounts in Active Directory? * What is the difference between a security group and a distribution group? * And between a universal and global group? What is referred to when speaking about the abbreviation "AGDLP" or "AGUDLP"? * A Windows 2008 R2 server restarts in Infinite loop. What is your approach to diagnosing the problem? ==== Linux ==== * What is the latest major Linux project that you have completed? * What is the Linux command to display free/used memory on Linux? Does free memory really exist on Linux? * What happens if we do “TAB TAB” at the Linux prompt? * What happens if we add “& disown” After a Linux command? * I lost my root password, what can I do? * How to do a search in VI? * What is LVM for Linux? ==== Security ==== * How do you qualify your experience in configuring Firewall (“Firewall”)? (What brands/models?) * Generally, how do you secure a Windows server? What is C2 certification? (Trusted Computer System Evaluation Criteria / Orange book) * You are being asked to help secure a corporate subnet. The goal is to isolate some computers from others in order to maintain the confidentiality of artistic materials. How do you think we should proceed? * In the previous scenario, what role can a network switch of Layer 3 type provide? Contrast against a layer 2 switch * What is a tunnel and how to bypass an HTTP proxy? * What is an IPS system? What is the difference with an IDS system? * What is the purpose of a SIEM system? * How does a layer 7 firewall differ from a conventional firewall? ==== Networking ==== * How do you qualify your network administration skill? * (Your specialty? Experience with ACL, Routage, NAT, VPN, VLAN?) * Did you have to manage DNS regularly? * Do you have extensive experience with site to site VPN techs? * (if yes, in which contexts and with which technologies) * What is 802.1q? * How many addresses can be used in a network with a mask 16 bits? * Tell us about the following protocols: LDAP, IMAP, MAPI, SMTP, RADIUS, BGP * What technologies or methods are used to reduce (or eliminate) « broadcast storms »? * What ways can we increase bandwidth Network of a server? (Detail technologies and concepts) * Name some interesting customizable technologies found on a “manageable switch” * What is the purpose of address 255.255.255.255? * Tell us about the content of a DNS table and how it is used * How could you extend a network between two sites to share a Network Level 2 DCI? (MPLS, VPLS, A-VPLS, Cisco OTV, HP EVI, EVPN) * Other than the MTU, what Other TCP settings could we modify to have smaller packets? (« Maximum Segment Size ») ==== VMWare ==== * What types of “port groups” exist on ESXi? * What are the types of “load Balancing” available on “vSwitches”? (“Originating port ID”, “MAC hash”, “IP hash”) * What is the purpose of Path selection Policies for storage on VMWare? * What is the difference between a “.vmdk” and “.vmdk-flat” file? * What is a “vApp”? * What is VMWare DRS? * How does a “snapshot” work on VMWare? Is it different on a VVOL? ==== Storage ==== * What are the RAID levels you know? * What are the differences between Fibre Channel and ISCSI? * What is a “LUN”? * What are the differences between DAS and SAN? ==== Office 365 / Office Servers ==== * What is the difference between E1 and E3 plans? * What is the use of the permission “Send As”? How does it differ from “Send on Behalf”? * What are the different ways to integrate authentication on Office 365 with Active Directory? (Synchro or Federation) * What is the attribute that allows you to manage a user's destination email address? How does it differ from “ProxyAddresses”? * What is a “Document Library” In SharePoint? * What is the taxonomy in SharePoint for? * What is a “Master Page” in SharePoint? * What is a Package Solution? * What is a SIP trunk? * What are the important roles in Skype for Business server? (mediation, edge, director, persistent chat) ==== Scripting ==== * Could you write a PowerShell script to add a value to the extended fields in Active Directory from a CSV file? * What is your favorite development environment (OS, editor, tools, etc.)? * What is abstraction? * How would you do a "ping" on a machine with PowerShell? * If I run the command “Get-Service-Name "bits" | Start-Process”, what will happen? * What is the difference in PowerShell between a normal function and an advanced function? * What is usually the first line in a shell script on Linux? * What are “regular expressions”? * What is the use of the caret (^) in “regex”? ==== Backups ==== * Have you ever been responsible for backups in your work experience? * (If so, briefly explain your backup and restore methodologies, as well as the associated tools used?) * Name the different conventional backup techniques (complete, incremental, differential) * What is the most efficient method at the disk space level in conventional methods, and why? * What is the disadvantage of the incremental technique? ==== Database ==== * What is normalization? * What is the difference between a relational and object-oriented database? * How would you migrate a MySQL database to Microsoft SQL Server? * What are "INSERT, UPDATE, and DROP" requests used for? ==== Source Control ==== * What is the main difference between conventional source control systems and the distributed model? * Can you name conventional source control systems? (SVN, CVS, VSS, VSTS, Perforce) * What is the most popular distributed source control system right now? (Git) * What is a branch in a source control system? ==== Cloud Computing ==== * Can you name the three layers of the cloud model? ("IaaS", "PaaS" and "SaaS") * What is the EC2 service for at Amazon? * Name the container technologies you know * What is the difference between a virtual machine and a "container"? * How can you see the console of a virtual machine on Amazon AWS? ("Screenshot" on Linux, “event log” only on Windows)