Which company brought out the very first RAM stick for commercial use?

Which company brought out the very first RAM stick for commercial use?

• Intel
• Dell
• MSI
• IBM 

EXPLANATION

IBM

Commercial use of SRAM began in 1965, when IBM introduced the SP95 memory chip for the System/360 Model 95.

Random-access memory (RAM /ræm/) is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.^[1][2] A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory. In contrast, with other direct-access data storage media such as hard disks, CD-RWs, DVD-RWs and the older magnetic tapes and drum memory, the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement. 

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What standard Linux command can be used to change the name of a file or directory?

What standard Linux command can be used to change the name of a file or directory?

• nam
• mv
• chg
• rename 

EXPLANATION

mv is a Unix command that moves one or more files or directories from one place to another. If both filenames are on the same filesystem, this results in a simple file rename; otherwise the file content is copied to the new location and the old file is removed.

mv stands for move. mv is used to move one or more files or directories from one place to another in file system like UNIX. It has two distinct functions:
(i) It rename a file or folder.
(ii) It moves group of files to different directory.
No additional space is consumed on a disk during renaming. This command normally works silently means no prompt for confirmation.
Syntax:

mv [Option] source destination

 

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What video conferencing application does NOT allow for native changes to automatic gain adjustment?

What video conferencing application does NOT allow for native changes to automatic gain adjustment?

• Skype for Business
• Cisco Webex
• Skype
• Zoom 

 Zoom Video Communications is a company headquartered in San Jose, California that provides remote conferencing services using cloud computing. Zoom offers communications software that combines video conferencing, online meetings, chat, and mobile collaboration.


Cisco Webex is an American company which develops and sells web conferencing and videoconferencing applications. It has its headquarters in Milpitas, California.

Skype for Business is an instant messaging enterprise software used with Skype for Business Server or with Skype for Business Online. On 11 November 2014, Microsoft announced that Skype for Business would replace Lync in 2015.

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In Cisco UCM, what is the purpose of the "Cisco DRF Local" service?

In Cisco UCM, what is the purpose of the "Cisco DRF Local" service?

• It is the service which supports the local Directory Number database.
• It is the service which supports the local Call Trunk agent.
• It is the service which supports the local backup agent.
• It is the service which supports the local SIP connections.

EXPLANATION

Cisco DRF Master

The CiscoDRF Master Agent service supports the DRF Master Agent, which works with the Disaster Recovery System graphical user interface (GUI) or command line interface (CLI) to schedule backups, perform restorations, view dependencies, check status of jobs, and cancel jobs, if necessary. The Cisco DRF Master Agent also provides the storage medium for the backup and restoration process.

Cisco DRF Local

The Cisco DRF Local service supports the Cisco DRF Local Agent, which acts as the workhorse for the DRF Master Agent. Components register with the Cisco DRF Local Agent to use the disaster recovery framework. The Cisco DRF Local Agent executes commands that it receives from the Cisco DRF Master Agent. Cisco DRF Local Agent sends the status, logs, and command results to the Cisco DRF Master Agent. 

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When I'm in a crowded area, i get a stream of unwanted texts. When i leave the area, the text's stop. Which of the below attacks has occurred?

When I'm in a crowded area, i get a stream of unwanted texts. When i leave the area, the text's stop. Which of the below attacks has occurred?

• Rogue Access Point
• Evil Twin
• Bluesnarfing
• Bluejacking 

EXPLANATION

Bluesnarfing is the unauthorized access of information from a wireless device through a Bluetooth connection, often between phones, desktops, laptops, and PDAs (personal digital assistant).
Bluebugging goes far beyond bluejacking and bluesnarfing! This is an advanced bluetooth device hacking technique by taking control of other Bluetooth enabled mobile phones or mobile devices to make call, send short message, read and write phonebook, etc. 

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