剩余时间0:41:22If a user wants to search for information about pizzas but excluding pizzas with hams or sausages as toppings, which of the following should be used forsearching?a.Pizza AND (hams OR sausages)b. Pizza OR NOT (hams AND sausages)O C.Pizza AND (hams AND sausages)d. Pizza AND NOT (hams OR sausages)Which of the following is a common wired network technology?a.EthernetO b.Wi-FiО с.BluetoothO d. Broadband Cellular NetworkA decision tree with better splits means that:a.all the branches have binary splits.O b.the tree has higher accuracy in prediction.C.the branches are of equal depth.d.the tree has more branches.Which of the following is the purpose of using Classification modelling?a. Creating a statistical graph.b Predicting customers! spending Which of the following software or hardware can perform Network Address Translation (NAT)?a. IDSO b. Network switchesO C.FirewallsO d. Security fobsWhich of the following is not a type of actors in Crowdfunding?a. Project initiatorb. Angel InvestorC. Individuals or groups who support the ideaO d. Moderating organizationment跳至Quiz 2 - exten

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Which of the following is a common wired network technology? a. Ethernet b. Wi-Fi c. Bluetooth d. Broadband Cellular Network

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Wireless Transmission Technology

If communication is done between two mediums without using a cable or wire, then it is referred to as wireless communication. Wireless communication is a type of data communication in which the transmission of information takes place without the help of a wire or cable. The device works by broadcasting electromagnetic signals through the air, atmosphere, or physical environment. The sender device generates electromagnetic signals (wireless signals) which is received by several intermediary stations before it reaches the destination device. The destination station receives and processes these signals. An electrical circuit with antenna, which is capable of changing digital data to wireless signal, can act as a transmitter (sender) and a circuit converts wireless signal to digital data with antenna can be a receiver.

Question

剩余时间0:41:22
If a user wants to search for information about pizzas but excluding pizzas with hams or sausages as toppings, which of the following should be used for
searching?
a.
Pizza AND (hams OR sausages)
b. Pizza OR NOT (hams AND sausages)
O C.
Pizza AND (hams AND sausages)
d. Pizza AND NOT (hams OR sausages)
Which of the following is a common wired network technology?
a.
Ethernet
O b.
Wi-Fi
О с.
Bluetooth
O d. Broadband Cellular Network
A decision tree with better splits means that:
a.
all the branches have binary splits.
O b.
the tree has higher accuracy in prediction.
C.
the branches are of equal depth.
d.
the tree has more branches.
Which of the following is the purpose of using Classification modelling?
a. Creating a statistical graph.
b Predicting customers! spending

Which of the following software or hardware can perform Network Address Translation (NAT)?
a. IDS
O b. Network switches
O C.
Firewalls
O d. Security fobs
Which of the following is not a type of actors in Crowdfunding?
a. Project initiator
b. Angel Investor
C. Individuals or groups who support the idea
O d. Moderating organization
ment
跳至
Quiz 2 - exten

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