Q71. What is a common method to secure a network against unauthorized access?
a) Changing default passwords
b) Increasing network speed
c) Using a proxy server
d) Disabling unused ports
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Correct Answer: a) Changing default passwords
Explanation: Changing default passwords is a common method to secure a network against unauthorized access by ensuring that default credentials are not exploited by attackers.
Q72. What is the role of a network administrator?
a) To develop network hardware
b) To configure and manage network systems
c) To provide technical support for end-users
d) To design web pages
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Correct Answer: b) To configure and manage network systems
Explanation: A network administrator is responsible for configuring, managing, and maintaining network systems to ensure efficient and secure network operations.
Q73. Which of the following is a technique for protecting data during transmission?
a) Data backup
b) Network segmentation
c) Encryption
d) Packet filtering
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Correct Answer: c) Encryption
Explanation: Encryption is a technique used to protect data during transmission by converting it into a secure format that can only be read by authorized recipients.
Q74. What is a common network security threat?
a) File compression
b) Network congestion
c) Phishing
d) Data backup
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Correct Answer: c) Phishing
Explanation: Phishing is a common network security threat where attackers attempt to deceive users into providing sensitive information by pretending to be a legitimate entity.
Q75. What does “LAN” stand for in networking?
a) Local Area Network
b) Long Area Network
c) Large Access Network
d) Limited Area Network
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Correct Answer: a) Local Area Network
Explanation: LAN stands for Local Area Network, which is a network that covers a small geographic area, such as a home, office, or building.
Q76. What is the purpose of the HTTP protocol?
a) To transfer files over a network
b) To manage email communications
c) To facilitate web page requests and responses
d) To connect devices to a network
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Correct Answer: c) To facilitate web page requests and responses
Explanation: HTTP (Hypertext Transfer Protocol) facilitates the transfer of web page requests and responses between clients and servers on the World Wide Web.
Q77. What does “FTP” stand for in networking?
a) File Transfer Protocol
b) Fast Transfer Protocol
c) Flexible Transfer Protocol
d) Functional Transfer Protocol
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Correct Answer: a) File Transfer Protocol
Explanation: FTP stands for File Transfer Protocol, which is used to transfer files between computers over a network.
Q78. What is the purpose of the DHCP protocol?
a) To assign IP addresses to devices on a network
b) To encrypt network traffic
c) To manage network security
d) To monitor network performance
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Correct Answer: a) To assign IP addresses to devices on a network
Explanation: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network, simplifying network management and configuration.
Q79. What does “SMTP” stand for in email communication?
a) Simple Mail Transfer Protocol
b) Secure Mail Transfer Protocol
c) Standard Mail Transfer Protocol
d) Server Mail Transfer Protocol
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Correct Answer: a) Simple Mail Transfer Protocol
Explanation: SMTP stands for Simple Mail Transfer Protocol, which is used to send and relay email messages between servers.
Q80. What is the primary function of the DNS protocol?
a) To manage email routing
b) To resolve domain names to IP addresses
c) To encrypt network data
d) To transfer files over a network
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Correct Answer: b) To resolve domain names to IP addresses
Explanation: The DNS (Domain Name System) protocol resolves human-readable domain names into IP addresses, enabling devices to locate and connect to each other on the network.