Network+ Pre-Assessment

Which of the following describes the function of a router?

• Connects devices within the same local area network (LAN).

• Filters network traffic based on MAC addresses.

• Forwards packets between different IP networks.

• Boosts Wi-Fi signals in dead zones.

What is the primary purpose of the OSI model?

• To define specific network hardware standards.

• To provide a conceptual framework for network communication.

• To specify IP addressing schemes.

• To manage data encryption.

Which of the following is a private IP address range?

• 1.1.1.0/24

• 172.16.0.0/12

• 200.200.200.0/24

• 192.169.0.0/16

Which protocol operates at the Transport layer and provides connection-oriented, reliable data transfer?

• UDP

• ICMP

• TCP

• ARP

What is the term for a unique identifier assigned to network interfaces for communication at the Data Link layer?

• IP address

• Port number

• MAC address

• URL

Which network topology connects all devices to a central hub or switch?

• Bus

• Ring

• Star

• Mesh

A subnet mask is used for what purpose?

• To hide the IP address from external networks.

• To identify the network and host portions of an IP address.

• To encrypt data before transmission.

• To assign dynamic IP addresses.

What type of cable is most susceptible to EMI?

• Fiber Optic

• STP

• UTP

• Coaxial

Which wireless standard operates exclusively in the 5 GHz band and offers speeds up to 54 Mbps?

• 802.11b

• 802.11a

• 802.11g

• 802.11n

What is the standard port for HTTP?

• 21

• 23

• 80

• 443