CompTIA A+ | Network+ | Security+ – Ultimate Study Bundle | Exams 220-1101/1102, N10-008, SY0-701 | 2025 Certification Prep

​🧠 CompTIA A+ / Network+ / Security+​
​Ultimate Study Bundle​
​Perfect for:​​IT support roles, network admins, cybersecurity beginners, and​
​certification prep.​




​🖥️ PART 1: Command-Line Cheat Sheets​

​🔧 A+ Essentials – Windows Command-Line Tools​

​Command​ ​Function​ ​Example​ ​Notes​

ipconfi​ ​View IP address​
​ ipconfig /all​
​ ​For IP, DNS, MAC​
g​
​ ​info​ ​address​

ping​
​ ​Test network​ ping google.com​
​ ​Also tests DNS​
​connection​ ​resolution​

tracert​ ​Trace path to host​
​ tracert 8.8.8.8​
​ ​Use to identify slow​
​hops​

sfc​
​ ​System File​ sfc /scannow​
​ ​Fix corrupted OS​
/scanno​ ​Checker​
​ ​files​
w​
​

, ​2​


tasklis​ ​View running​
​ tasklist​
​ ​Similar to Task​
t​
​ ​processes​ ​Manager​

taskkil​ ​Kill a process​
​ taskkill /IM​
​ ​Needs admin rights​
l​
​ notepad.exe /F​
​

diskpar​ ​Disk partitioning​
​ diskpart​
​ ​Dangerous—use​
t​
​ ​tool​ ​carefully​

format​
​ ​Format a drive​ format D:​
​ ​Erases data!​

chkdsk​
​ ​Scan disk for​ chkdsk C:​
​ /f​​to auto-fix​
​Add​​
​errors​

dir​
​ ​List directory​ dir /w​
​ ​Wide list view​
​contents​



​🌐 Network+ – Networking CLI Tools (Windows & Linux)​

​Command​ ​Platform​ ​Use​ ​Example​

netstat -aon​
​ ​Windows​ ​Active connections​ ​
netstat -aon​

nslookup​
​ ​Cross-platfo​ ​DNS lookup​ nslookup​
​
​rm​ openai.com​
​

arp -a​
​ ​Windows/Li​ ​View ARP table​ arp -a​
​
​nux​

ipconfig​
​ ​Windows​ ​Renew DHCP​ ​Troubleshoot IP​
/release /renew​
​ ​lease​ ​conflicts​

ifconfig​
​ ​Linux/macO​ ​View network​ ip​
​Deprecated; use​​
​S​ ​interface​

ip a​
​ ​Linux​ ​Show IP addresses​ ​
ip a​

dig​
​ ​Linux/macO​ ​DNS diagnostics​ dig​
​
​S​ example.com​
​