Microsoft
Servers, network infrastructure devices and printers should use static IP addresses. Why each node type needs a fixed address, explained for MD-102 candidates.
Microsoft
Hashing and digital signatures are the two AZ-500 answers for data integrity — how each works across Azure Blob Storage, Key Vault, and Active Directory.
CWNP
A Bluetooth master can connect to seven active slaves in a piconet. Explore the rule of seven, parked slaves and scatternets for the CWNP CWTS exam.
Cisco
An SSL/TLS VPN is the VPN type that connects using Transport Layer Security, providing clientless and AnyConnect remote access for Cisco 350-701 SCOR.
CompTIA
A CSPRNG produces unpredictable random numbers for encryption keys, session tokens, salts and nonces, keeping cryptographic systems secure against prediction.
CompTIA
Salting adds a unique random value to each password before hashing, preventing rainbow table, precomputed hash, and identical-password brute force attacks.
CompTIA
IPsec AH uses HMAC-MD5 and HMAC-SHA1 to guarantee authenticity. How each digest is calculated and verified, and what SY0-701 candidates must know.
Microsoft
For AZ-104: 127.0.0.1 is the IPv4 address a host uses to ping the loopback interface. What a successful ping proves about the TCP/IP stack on an Azure VM.
Microsoft
EUI-64 derives an IPv6 interface ID from the MAC address — inserting FFFE and flipping the U/L bit — a SLAAC concept AZ-700 candidates must master.
Cisco
A router transfers data from a local IP network to remote networks, using routing tables and path selection to forward packets between them.
Test Prep
You can retake the GRE every 21 days, up to five times in a rolling 12 months, each at full fee. How ScoreSelect and 5-year score validity shape strategy.
ACAMS
CAMS can be retaken, but every attempt needs a new exam fee inside your eligibility window. What ACAMS publishes, what it doesn't, and how to rebuild first.
Amazon AWS
SAP-C02 retakes: a 14-day wait and the full fee (currently listed at US$300) per attempt. Read the section bands, fix the real failure pattern, then rebook.
Microsoft
MB-330 retakes follow Microsoft's ladder: 24 hours, then 14-day waits, five attempts a year. Use the score report to rebuild process areas before rebooking.
Microsoft
Failed the MD-102? Retake after 24 hours, wait 14 days after a second failure, and take up to five attempts in 12 months. How the policy works.
Veeam
Veeam publishes no VMCE retake ladder, so confirm current terms with Veeam directly; the real fix is lab rebuilds of weak areas before you rebook the exam.
Google
Google's PDE retake ladder escalates sharply: wait 14 days after a first fail, 60 days after a second, and a full year after a third attempt fails.
Amazon AWS
MLS-C01 retired on March 31, 2025, so there are no retakes. MLA-C01 follows standard AWS rules: wait 14 days, pay the full fee, and repair the weak section.
Microsoft
Microsoft's AI-900 retake ladder: 24 hours, then 14-day waits, five attempts a year - plus why failures are workload-sorting errors, and how to repair them.
Microsoft
The PL-300 retake ladder in full: 24 hours, then 14 days, five attempts a year at full fee — plus where attempts fail and a 14-day repair plan that works.
Microsoft
Microsoft's DP-900 retake policy explained: waits of 24 hours then 14 days between attempts, a five-attempt cap per 12 months, and how to use each window.