CompTIA Exam Prep - ITF+, A+, Network+, Security+, CySA+

 Throughput Testers To test your network's performance, you can transfer a large file between 2 PCs. Take the size of the data and divide it by the time it took for the transfer to complete. Several online throughput calculators can help you. The best way to test throughput on your network is to perform the test during the busy part of the day. Here is a listing of a few throughput testers: iperf:  iperf Ttcp:  Ttcp bwping: bwping

 Digital Defense Checklist The following video is closely related to the security that needs to be employed to keep our data safe. This is an excellent site to use to lock down areas that you might have missed:

 Video Types & Connectors This post will help those taking the CompTIA ITF+ and A+ exams. Our goal is to show a visual representation of the connectors, whether they use analog or digital signals, and whether they provide video only or video and audio. Composite video provided video and audio. The video signal was analog only. The connecting cables are called RCA connectors. The VGA (Video Graphics Array) provided an analog signal for video; there was no audio. The connector has 15 pins. DVI (Digital Visual Interface) is used for video only. The connector dictates what signal is being provided.  DVI-A signal is analog only DVI-D signal is digital only DVI-I can be used with either analog or digital signals. DisplayPort provides a digital signal for video and audio. A single DisplayPort connector on the PC can be used to create a dual monitor setup, which can be daisy-chained. Thunderbolt provides both video and audio in a digital format. Like DisplayPort, it only needs one...

 Security Onion Solutions Most of you know I took down all the videos I did not create. There was quite an interest in some of the content that was taken down. Here is a link to the 9 Security Onion Solutions videos: https://www.youtube.com/watch?v=gDlgDE-vbJ8&list=PLljFlTO9rB17E0hOetV_R4Lc0WbEy8q_Y

 Msinfo32 - System Information Use the command "msinfo32" on any Windows PC to find information such as the BIOS version, PC make and model, installed RAM, processor speed and mode, etc.

 Wireless Frequencies & Max Data Rates IEEE Standard Wi-Fi Generation Frequency Max Data Rate 802.11a   5 GHz 54 Mbps 802.11b   2.4 GHz 11 Mbps 802.11g   2.4GHz 54 Mbps 802.11n Wi-Fi 4 2.4 / 5 GHz 600 Mbps 802.11ac Wi-Fi 5 5 GHz 6.9 Gbps 802.11ax Wi-Fi 6 2.4 / 5 / 6 GHz 9.6 Gbps 802.11be Wi-Fi 7 2.4 / 5 / 6 GHz 46.1 Gbps   Note: 802.11 ac is also backward compatible with the 2.4GHz frequency   Note: 802.11 just came out in 2024 and is not on the exam yet

 OSI Mnemonics Memorization Chart This is meant to help those studying for CompTIA Network+ & A+.             7. Application      All Away 6. Presentation People Pizza 5. Session    Seem Sausage 4. Transport To Throw 3. Network Need Not 2. Data Link Data Do 1. Physical Processing Please The second column is read from the top down, while the third is read from the bottom up.

 Differences Between Wireless Networks This post will help with CompTIA A+, Network+, and Security+ exams. BSSID (Basic Service Set Identifier) —This is the MAC address of the WAP (Wireless Access Point). There should never be two WAPs with the same BSSID; if so, one of them is most likely an evil twin used to capture traffic and credentials. ESSID (Extended Service Set Identifier): Name all of your WAPs the same name to facilitate the transition of your wireless devices in your company as users move through the building, such as to different floors. IBSS (Independent Basic Service Set): With this method, a WAP is not needed. The systems connect directly to each other ad hoc. SSID (Service Set Identifier)  is a WAP's broadcast name. Changing the default name to a unique name makes it easier for users to know which WAP to connect.

 SECURITY+ (SY0-701) EXAM INSTRUCTIONS   Security+ Exam 90 minutes Passing score 750 out of 900 Usually 75 to 85 questions, maximum of 90 questions The first few questions are simulations Everything else is multiple-choice. There is only one answer if there are round radio buttons for the answers. If there are squares, the question's end will tell you to Choose / Select 2, 3, or 4. At the very top right is the timer. Below is a "Flag for Review" button. Answer something if you run out of time. At the bottom right is the following button. At the bottom left is the "Review All" button. In the preview window, you might see "Incomplete," meaning you didn't answer the question or select enough answers. Also, in the preview window, you will see "Flagged for Review." Once you have selected your answer, uncheck the flag at the upper right corner. If you are still trying to determine an answer, eliminate the options you know are wrong and take you...