TCP/UDP

In the OSI model, which layer is responsible for establishing, maintaining, and terminating connections?

• Network Layer
  

• Transport Layer

• Session Layer

• Data Link Layer

Which protocol is connection-oriented and ensures reliable communication?

• IP

• HTTP

• UDP

• TCP

Which of the following is a key characteristic of UDP?

• Reliable data transfer

• Three-way handshake

• Connectionless communication

• Error correction

What is the main security challenge in IoT devices?

• Limited computing resources

• Scalability

• High processing power

• Large storage capacity

Which security protocol is commonly used to secure MQTT communication?

• WPA2

• SSL/TLS

• FTP

• SNMP

In GSM architecture, which component is responsible for switching calls between networks?

• BSC

• MSC

• BTS

• HLR

What was the main limitation of 1G networks?

• Slow data transmission

• Poor voice quality

• No encryption

• All of the above

Which GSM component stores subscriber information like authentication details?

• BTS

• HLR

• VLR

• BSC

What is the key advantage of cloud storage over in-house storage?

• More control over data

• Lower latency

• Higher maintenance cost

• Scalability and accessibility

Which type of storage method provides the highest level of data security?

• Cloud storage

• Server-based storage

• In-house storage

• USB drive