Fact. Recent studies have shown that certified employees in the computer industry are earning salaries averaging 25% higher than their non-certified counterparts.

NCSA. Your ticket to a brighter future!


Test your skills out on TCP/IP with the NCSA online certification exam CN301. Exam questions are multiple choice and come from three different categories which are shown in the box below along with the approximate percentage of questions from each category.

   Category Percentage
   Basics / Syntax 40%
   TCP/IP Concepts 30%
   Application 30%


Questions are designed to meet the criteria established for individuals with six months experience working with TCP/IP. Your scores will be available as soon as you complete the exam. Online certification exams are available for free by clicking the test now button above.

Why get your TCP/IP certification?

TCP/IP is the set of internet protocols that forms the basis of the internet and most networks. A strong base of knowledge of the foundation of networking prepares you for a career in a wide variety of companies. A TCP/IP certification from NCSA demonstrates to employers that you have acquired a level of knowledge equivalent to six months experience. This course is also a prerequisite of CN-376 Computer Networking Technician

What do I need to study?

The best way to prepare for an exam is to be experienced with the subject material... in this case TCP/IP. As you read and study the basics of TCP/IP be sure to build on and reinforce those concepts by actively working with your company's, or even your home, network. If you already have a working knowledge it is important that you refresh your memory of the basic syntax and makeup of networks and packets. The outline below covers some of the major topics covered on the exam:


  • Client/Server
  • Peer to Peer
  • API’s

IP Address Structure

  • Classful Addressing
  • Subnet Addressing
  • Subnet Masks
  • VLSM
  • Broadcast Addresses
  • IPv6
  • Allocation
  • Unicast
  • Multicast
  • IP
    • Header Fields
    • Checksum
    • DS Field
    • Fragment Header
    • Routing Header

Link Layer

  • IEEE 802 LAN/MAN Standards
  • 802.1p/q Virtual LANs
  • 802.1AX Link Aggregation
  • Duplexing
  • Wake-on LAN (WoL)
  • Bridges
  • Switches
  • Spanning Tree Protocol

Wireless LANs

  • 802.11 Frames
  • Media Access Control
  • Wi-Fi Security
  • Wi-Fi Mesh


  • Address Resolution Protocol (ARP)
  • Dynamic Host Configuration Protocol (DHCP)
  • ICMP
  • UDP
  • DNS


Transmission Control Protocol (TCP)

  • Headers
  • Encapsulation
  • Half-Close
  • ISN
  • Timeout
  • RTO
    • Linux method
    • Standard Method
  • Translators
  • Sack
  • Timestamps
  • Nagle Algorithm
  • Delayed ACK
  • Congestion Control
  • Keepalive

What careers will a TCP/IP certification prepare me for?

IP and WIFI Tester, Security Engineer, VoIP Network Specialist, IP Data Services, Network Engineer, Technical Account Manager, IP Architect, Networking Consulta, Technical Service Professional, Network Support Analyst, Resident Technician, Enterprise Customer Serverice Engineer

   Category Percentage
   Basics / Syntax 40%
   TCP/IP Concepts 30%
   Application 30%


Need training before you take the exam? Visit our training area to load up on quality courseware to prepare you for taking your TCP/IP certification exam.