NET+ Quiz Part 36

What does PKI use to securely exchange data?

• A) A single cryptographic key

• B) A public and private cryptographic key pair

• C) A symmetric key

• D) A shared password

Answer explanation

PKI uses a public and private cryptographic key pair to securely exchange data.

What is the purpose of a plenum in a building?

• A) To store data

• B) To run network cables and HVAC systems

• C) To provide power to devices

• D) To house servers

Answer explanation

The purpose of a plenum in a building is to run network cables and HVAC systems, making option B the correct choice.

What does the term "plug and play" refer to?

• A) A gaming console feature

• B) An architecture for automatic hardware detection and driver loading

• C) A type of network cable

• D) A method of data encryption

Answer explanation

The term 'plug and play' refers to an architecture for automatic hardware detection and driver loading, making it easier to install new devices on a computer system.

What does PoE (Power over Ethernet) enable?

• A) Wireless data transmission

• B) Electrical power transmission over twisted-pair Ethernet cable

• C) High-speed internet access

• D) Secure data encryption

Answer explanation

PoE (Power over Ethernet) enables electrical power transmission over twisted-pair Ethernet cable, allowing devices to receive power and data through a single cable.

What is the main difference between PoE and PoE+?

• A) PoE+ provides more power than PoE

• B) PoE+ is wireless, while PoE is wired

• C) PoE+ is used for data encryption, while PoE is not

• D) PoE+ is a type of network protocol, while PoE is not

Answer explanation

PoE+ provides more power than PoE

What does the term "policies and procedures" refer to in an organization?

• A) The hardware used in the network

• B) The documented rules and methods for task performance

• C) The software applications used

• D) The physical layout of the office

Answer explanation

The term 'policies and procedures' refers to the documented rules and methods for task performance within an organization.

What is the function of polling in data transmission?

• A) To encrypt data

• B) To contact each node to determine if it has data to send

• C) To store data

• D) To provide power to devices

Answer explanation

To contact each node to determine if it has data to send

What is the default port number for unsecured POP3?

• A) 80

• B) 110

• C) 995

• D) 443

Answer explanation

The default port number for unsecured POP3 is 110, making option B the correct choice.

What is port mirroring used for?

• A) Data encryption

• B) Troubleshooting network issues

• C) Increasing network speed

• D) Providing power to devices

Answer explanation

Port mirroring is used for troubleshooting network issues by duplicating the network traffic from one port to another for analysis and monitoring.

What does PPP (Point-to-Point Protocol) provide?

• A) Wireless data transmission

• B) Host-to-network and switch-to-switch connections

• C) Data encryption

• D) Electrical power transmission

Answer explanation

PPP provides host-to-network and switch-to-switch connections, making option B the correct choice.