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Useful Exim Commands with Examples

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix/Linux systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence.Exim is used for locating the spam activity on the servers. There is a great deal of flexibility in the way mail can be routed,...

Top 25+ MCSE Interview Questions for System Admins

MCSE Top Interview Q&A
A collection of 25+ top MCSE interview questions with answers for System Admins.MCSE (Microsoft Certified Solutions Expert) is a senior level certification from Microsoft. MCSA (Microsoft Certified Solutions Associate) is an entry level certification. If a candidate has MCSE certification, then he is allowed to go to expert level. MCSE Interview Questions We have categorized our collection of MCSE job interview...

Solaris OK prompt commands

What is OK Prompt? Most of the time, when you start the server with Solaris OS installed, it boots at run level 2 or run level 3, which are multi-user states with access to full system and network resources.Occasionally, you might operate the system at run level 1, which is a single-user administrative state.The lowest operational state is run level...

The difference between fork(), vfork(), exec() and clone()

Fork: The fork call basically makes a duplicate of the current process, identical in almost every way (not everything is copied over, for example, resource limits in some implementations but the idea is to create as close a copy as possible).The new process (child) gets a different process ID (PID) and has the the PID of the old process (parent)...

Shortcut Virus – How to Remove it

Pen Drive, SD Cards or USB Flash drives are common devices to transfer data from one computer to another. Sometimes we get errors while connecting Pen drive to Computer and during data transfer one of them is Shortcut Error, basically, this is a Virus known as Shortcut Virus, it converts every file into shortcut in Pen drive / Hard drive /...

CISSP – Questions and Answers

Q: FIPS-140 is a standard for the security of which of the following?a) Cryptographic service providers b) Smartcards c) Hardware and software cryptographic modules d) Hardware security modulesAns: c

US RQ-4 Global Hawk & MQ-4C Triton Surveillance Drone

Iran Shoots down US Navy's DroneIran said in a Thursday, June 20, 2019 statement that it had shot down a United States Navy's biggest unmanned surveillance drone US RQ-4 Global Hawk while it was carrying out an Intelligence gathering mission and violated its airspace near the strategic Strait of Hormuz, with the U.S. military saying the RQ-4 Global Hawk...

11 Reasons Why Your Upwork Account get Suspended

Here are the 11 reasons why your Upwork account gets suspended:1: Having fake Identity (fake name or pic). 2: Allowing others to use your account or using others account on same system. 3: Not doing or Failing the ID and phone Verification. 4: Receiving payments Off Upwork. 5: Payment Disputes and Failing to Perform on Your Contracts. 6: Multiple IP/MAC Logins 7: Contacting client outside...

Election 2018 Discounts for Voters – Clothing Stores & Brands

Election 2018 Discounts for Voters
Pakistan is going to the Election 2018 polls today July 25, 2018. Brands are also hoping to capitalize on the Election 2018 Fever that’s gripping the whole country right now & offering Election 2018 discounts for Pakistani voters who do their civic duty & encouraging people to go out and cast a vote. Election 2018 Discounts for Voters In most cases,...