Networking Basics
This device connects multiple devices in a LAN and uses MAC addresses to forward data.
What is a switch?
This open-source operating system is widely used for servers.
What is Linux?
The full form of IaaS. (What does IaaS standard for?)
What is Infrastructure as a Service?
This type of malware locks files and demands payment.
What is ransomware?
You can’t ping a server. First step?
What is check the network connection?
This protocol is used to assign IP addresses dynamically.
What is DHCP?
This Windows feature allows you to schedule scripts or tasks.
What is Task Scheduler?
This hypervisor type runs directly on hardware.
What is Type 1 hypervisor?
This term describes the practice of applying security patches as soon as they are released.
What is patch management?
DNS isn’t resolving. What service might be down?
What is the DNS server?
The OSI layer responsible for routing packets across networks.
What is Layer 3 (Network layer)?
This log on a Linux system records security and authentication-related messages.
What is /var/log/auth.log?
AWS service used to store files.
What is Amazon S3?
A system used to detect unauthorized access attempts.
What is an IDS (Intrusion Detection System)?
A user has no internet but LAN access works. The likely issue is?
What is a default gateway misconfiguration?
CIDR notation /26 gives how many usable IP addresses?
What is 62?
A file that stores user account information in Linux.
What is /etc/passwd?
A snapshot in virtualization is used to do this.
What is save the current state of a VM?
This protocol secures web traffic.
What is HTTPS?
After a patch, a service won't start. What should you check?
What is the service logs or dependencies?
This command-line tool can trace the path packets take to a destination.
What is traceroute (or tracert on Windows)?
PowerShell command to list all running services.
What is Get-Service?
This tool allows provisioning infrastructure using code.
What is Terraform?
Common technique for safely allowing access to internal networks over the internet.
What is a VPN?
A VM is slow despite low CPU usage. What else to check?
What is disk I/O or memory usage?