What is the term for a horizontal partition of data in a database or search engine?

What is the term for a horizontal partition of data in a database or search engine?

• Hash
• Shard
• Schema
• Row

EXPLANATION

 A database shard is a horizontal partition of data in a database or search engine. Each individual partition is referred to as a shard or database shard. Each shard is held on a separate database server instance, to spread load.

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What is the file extension ".csv" short for?

What is the file extension ".csv" short for?

• Client SMTP validation
• Computer system validation
• Common short values
• Comma separated values

EXPLANATION

 CSV is a simple file format used to store tabular data, such as a spreadsheet or database. Files in the CSV format can be imported to and exported from programs that store data in tables, such as Microsoft Excel or OpenOffice Calc. CSV stands for "comma-separated values".

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Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?

Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?

• ping
• traceroute
• route
• arp 

EXPLANATION

The Ping utility is an online free tool that help you to verify if a domain/server is operating and network accessible. This Ping tool uses the Internet Control Message Protocol (ICMP) Echo function as detailed in RFC 792. A small packet will be sent through the network to a given IP address (IPv4) or host name.

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What does the acronym RBAC stand for?

What does the acronym RBAC stand for?

• Ribs Bacon And Chili
• Role-Based Access Control
• Remote Bind Access Code
• Remote Bind Access Control 

EXPLANATION

Role-based access control (RBAC) is a policy-neutral access-control mechanism defined around roles and privileges. The components of RBAC such as role-permissions, user-role and role-role relationships make it simple to perform user assignments.

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Which does DHCP option 66 provide?

Which does DHCP option 66 provide?

• PXE bootfile name
• DHCP user class
• The IP address or the hostname of a single TFTP server
• A list of TFTP servers 

EXPLANATION

DHCP option 66 gives the IP address or the hostname of a single TFTP server.

 

TFTP server name

   This option is used to identify a TFTP server when the 'sname' field
   in the DHCP header has been used for DHCP options.



   The code for this option is 66, and its minimum length is 1.

       Code  Len   TFTP server
      +-----+-----+-----+-----+-----+---
      | 66  |  n  |  c1 |  c2 |  c3 | ...
      +-----+-----+-----+-----+-----+---

 

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