Arman Hasen, Author at Networkwalks Academy

WhatsApp Crashed | Users around the world reported app outage

WhatsApp reportedly crashed today on 19Mar-2021 & users around the world have reported outage for around 55 minutes. Also Down Detector has confirmed (it is a website that monitors app crashes in real-time from around the world). “User reports indicate Whatsapp is having problems since 1:34 PM EDT,” Down Detector wrote on Twitter Friday. WABetaInfo has also confirmed the news just now: More updates to follow in our news & blog section… Follow our Facebook Page & YouTube Channel for more updated info, news & blog: Also check our free Online Quizzes on all Read More …

Network Protocols Quiz (CCNA)

Test your Cisco Networking knowledge and skills by practicing this Network Protocols Quiz. You might also be interested in our free Online Quizzes on all IT topics including Cisco CCNA, Cyber Security, Python Programming, Linux & Ethical Hacking: Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also view free study notes (Cheat sheets) for long term memory: Networkwalks Summary Cheatsheets Follow our Facebook Page & YouTube Channel for more updated Cheatsheets & Quizzes after doing this Network Protocols Quiz:

Transport & Application Layers (CCNA Quiz)

Test your Cisco Networking knowledge and skills by practicing this free online Transport & Application Layers Quiz. You might also be interested in our free Online Quizzes on all IT topics including Cisco CCNA, Cyber Security, Python Programming, Linux & Ethical Hacking: Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also view free study notes (Cheat sheets) for long term memory: Networkwalks Summary Cheatsheets Follow our Facebook Page & YouTube Channel for more updated Cheatsheets & Quizzes after doing this Transport & Application Layers Quiz:

Data Link Layer & Layer2 Switching (ITN CCNA Online Quiz)

Test your Cisco Networking knowledge and skills by practicing this free online Layer-2 Switching Quiz. What is Layer-2 Switching? Layer 2 switching (or Data Link layer switching) is the process of using devices’ MAC addresses to decide where to forward frames. Switches and bridges are used for Layer 2 switching. They break up one large collision domain into multiple smaller ones. You might also be interested in our free Online Quizzes on all IT topics including Cisco CCNA, Cyber Security, Python Programming, Linux & Ethical Hacking: Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also Read More …

Cisco has announced 50% Off on all Exams fee!

Cisco has officially announced a 50% off discount on all exam fee today which is valid till 16-May 2021. This is a very Good News for all students who have been planning to attempt their Cisco CCNA, CCNP-1 OR ENCOR exam recently. So, if you were planning to attempt the exam, then this is the best opportunity for you to avail this cisco discount offer. We have prepared a short video on this, plz watch it now. Official Cisco website (as shown in this video): https://learningnetwork.cisco.com/s/cisco-certifications-and-training-offers Please read all detail yourself from above Cisco official website. Below are some important Read More …

Network Architectures, SDN & Automation Quiz (ENCOR/CCNP)

Also check our free Online Quizzes on all IT topics and CCNA, CCNP, CCIE including new Python Automation Programming. Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also view free study notes (Cheat sheets) on all IT and Cisco CCNA/CCNP/CCIE topics for long term memory: Networkwalks Summary Cheatsheets Follow our Facebook Page & YouTube Channel for more updated Cheatsheets & Quizzes:

IP Services Quiz (ENCOR/CCNP)

IP Services Quiz best for IT certifications like Cisco CCNA, CCNP, CCIE, Huawei HCNA, Juniper JNCIA, Microsoft MCSA/MCSE, … More quizzes on all IT topics and CCNA, CCNP, CCIE including new Python Automation Programming. Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also view free study notes (Cheat sheets) on all CCNA/CCNP/CCIE topics for long term memory: Networkwalks Summary Cheatsheets Follow our Facebook Page & YouTube Channel for more updated Cheatsheets & Quizzes like this IP Services quiz:

WLAN Wireless Roaming & Authentication Quiz (ENCOR/CCNP)

WLAN Wireless Roaming & Authentication Quiz best for IT certifications like Cisco CCNA, CCNP, CCIE, Huawei HCNA, Juniper JNCIA, Microsoft MCSA/MCSE, … More quizzes on all IT topics and CCNA, CCNP, CCIE including new Python Automation Programming. Free Online Quizzes (Best for Cisco CCNA, Huawei HCNA, N+) You can also view free study notes (Cheat sheets) on all IT and Cisco CCNA/CCNP/CCIE topics for long term memory: Networkwalks Summary Cheatsheets Follow our Facebook Page & YouTube Channel for more updated Cheatsheets & Quizzes like this WLAN Wireless Roaming & Authentication Quiz:

Wireless Signals Modulation Quiz (ENCOR/CCNP)

Bit Error Rate & BERT Meter (part2)

Bit Error rate control & Bit Error testing (BERT) is crucial to network performance especially for Ethernet, SDH, DWDM and OTN Networks that are based on Optical transmission. What is a BERT Meter (BER Tester)? A BERT Meter is an electronic device that is used to measure the Bit Error Rate. There are many equipment vendors that manufacturer that sell BER Testers. Some of the popular companies are JDSU, Anritsu and EXFO. However, their prices & features vary a lot. Below is one of the famous BERT Meter model as an example (courtesy JDSU). How to Read More …