What is the primary function of a router?

• Connect devices within a LAN

• Filter network traffic based on IP addresses

• Forward data between different networks

• Assign IP addresses dynamically

Which device operates at the Data Link Layer (Layer 2) of the OSI model?

• Router

• Switch

• Hub

• Firewall

How many bits are in an IPv6 address?

• 32

• 64

• 128

• 256

Which protocol is responsible for dynamically assigning IP addresses?

• DNS

• DHCP

• FTP

• HTTP

What does "SSD" stand for in storage devices?

• Solid-State Drive

• Serial Storage Device

• Secure System Disk

• Secondary Storage Drive

Which layer of the OSI model handles data encryption and compression?

• Application

• Presentation

• Session

• Transport

What is the maximum decimal value of an 8-bit binary number?

• 127

• 255

• 256

• 1024

Which port is used by the Simple Mail Transfer Protocol (SMTP)?

• 21

• 25

• 53

• 80

What is the purpose of a firewall?

• Assign IP addresses

• Block unauthorized network access

• Connect devices within a LAN

• Forward data between different networks

Which statement about UDP is correct?

• It guarantees data delivery

• It uses a three-way handshake

• It is connectionless

• It operates at the Network layer