Network Troubleshooting Tools (O'Reilly System Administration)

TCP/IP Network Administration (3rd Edition; O'Reilly Networking)

Network Maintenance and Troubleshooting Guide: Field Tested Solutions for Everyday Problems (2nd Edition)

Network Warrior: Everything You Need to Know That Wasn't on the CCNA Exam

Sams Teach Yourself Network Troubleshooting in 24 Hours (2nd Edition)

IP Subnetting for Beginners: Your Complete Guide to Master IP Subnetting in 4 Simple Steps (Computer Networking Series)

Linux (Hacking Exposed)

Network Programmability and Automation: Skills for the Next-Generation Network Engineer

CCNA Routing and Switching Portable Command Guide (ICND1 100-105, ICND2 200-105, and CCNA 200-125) (4th Edition)

The Linux Cookbook, Second Edition

CompTIA Network+ Certification All-in-One Exam Guide, Seventh Edition (Exam N10-007)