activity 2

Wireless networks allow communication without fixed infrastructure. They provide flexibility and mobility but introduce new challenges. Which of the following is NOT a feature of wireless networks?

• Mobility support
• Signal interference
• Dependence on wired backbone
• Coverage through radio waves
• All the Above

Mobile IP is a protocol that supports mobility of devices across networks. It allows devices to keep the same IP while moving. What is the main purpose of Mobile IP?

• Provide faster downloads
• Reduce device battery consumption
• Maintain continuous network connectivity
• Replace TCP/IP stack
• All the Above

A mobile device moves between two networks during an active session. Mobile IP ensures the session does not drop. Which feature supports this?

• Dynamic DNS
• Data compression
• Signal amplification
• Home Agent and Foreign Agent
• Non of the Above

One major challenge in Mobile IP is related to security. What is the key concern?

• High bandwidth requirement
• Lack of user passwords
• Power consumption
• Authentication of messages
• Non of the Above

Cellular networks and ad hoc networks differ in infrastructure. Which of the following best describes the difference?

• Both depend on base stations
• Cellular networks have fixed infrastructure, while ad hoc networks are infrastructure-less
• Ad hoc networks are faster than cellular
• Cellular networks cannot support mobility
• All the Above

In ad hoc networks, nodes forward packets for others since no base stations exist. What is the main challenge in this approach?

• High energy consumption at nodes
• Stronger security
• High bandwidth guarantee
• Simplified routing
• Non of the Above

Mobile IP has several applications in real life. Which scenario best demonstrates its importance?

• Streaming a movie at home
• File sharing over Bluetooth
• Video call while traveling between Wi-Fi and 4G networks
• Printing in a local office network
• All the Above

Proactive routing protocols in MANETs maintain routing tables at all times. What is the disadvantage of this approach?

• High route discovery delay
• High control overhead
• Unstable routes
• Inability to find routes
• Non of the Above

Reactive routing protocols find routes only when needed. Which of the following is a reactive protocol?

• OLSR
• DSDV
• AODV
• RIP
• Non of the Above

Mobile IP separates permanent address and temporary address for devices. What are these addresses called?

• Care-of Address and Home Address
• Source Address and Destination Address
• Static IP and Dynamic IP
• Local IP and Global IP
• Non of the Above