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Showing posts from April, 2026

Security Plus Part 2

DNS lookup-  dig command on Linux, you enter 'dig and website name like professor messer.com and it does a query (it shows the results of when it shows up). text based.  on Windows, its nslookup command.  2.3 authentication server- you put name and password and it gives access to central server -not in personal home, since everyone can share the same password - in an enterprise, where we need more security everyone has their own credentials NTP server- network time protocol. all the computers need to reference the same time for accuracy. load server/balancer: is a system (hardware or software) that distributes incoming network traffic across multiple servers . it makes sure the site doesn't crash. it balances out the load amongst different servers, spreads the load.  2.4 DNS configuration DHCP-automatically give IP addresses to different devices in a large network. started in 1997. prevents someone having to do it manually. (dynamic host configuration protocol) 2.4 v...

Security Plus notes part 1

 near field communication (NFC) allows someone to get close to a terminal and have access or authenticate themselves. example- key card to allow access to a building or phone to make a payment. has to be 4 centimeters or less, so relatively close.  PAN- personal area network. what we call the network that we use Bluetooth on, its short distance over a high powered connection. turn your phone into a wifi hotspot.  trackpad- what is called for the box at the bottom of the laptop that allows us to use our fingers as a mouse (no external mouse needed).  1.3 MDM- mobile device management- manage company owned and user owned mobile devices (cell phones, tablets). some companies allow use of personal phone inside the building. others provide company owned devices and allow user to have personal use as well.  2.1 introduction to IP TCP and UDP are two different ways to move data from place to place. TDP- transmission control protocol, a connection based way to transfer ...

... hr email

 resume to the email  wash and fold and front desk and driver. wash and fold, front desk. email: hr@unitedlaundre.com