Bluetooth and Network Interview questions

Bluetooth and Network Interview questions
1)Explain the following terms: ICMP, ARP, Multicast, Broadcast?
2)What is TCP connection establishment and tear down?
3)What method is used for Voice transfer? Brief about the method used.
4)Explain the term 'Airport' in Bluetooth.
5)How frequency hopping is used for security in Bluetooth?
6)Why is Bluetooth 2.0 better than previous versions?
7)What do you mean by the term Frequency-Hopping Spread Spectrum (FHSS)?
8)Disadvantages of Symmetric Cryptosystems.
9)Explain the concept of PKI, Public Key Infrastructure.
10)Explain the concepts of digital certificates.
11)Explain the concept of Voluntary and Compulsory Tunnels.
12)Explain Point-To-Point Tunneling Protocol, PPTP
13)What is CHAP (Challenge-Handshake Authentication protocol)?

Bluetooth interview question and answers

Bluetooth interview question and answers

1. Why is Bluetooth called a cable replacement technology? -
   Bluetooth technology allows the creation of Personal Area Networks without cables or wires that are usual in home networks.
2. Give a generic description of Bluetooth? -
   Bluetooth is a low-cost, short-range (RF) links between mobile PCs, mobile phones and other portable devices. Bluetooth can transmit through solid, non-metal objects.
3. Why can Bluetooth equipment integrate easily in TCP/IP network? - Because Bluetooth uses wireless LAN standards IEEE for data transmission.
4. Is it possible to connect multiple Bluetooth hubs? -
   No, only one hub can be used at a time with a computer. USB or Serial devices can be added.
5. What is Piconet? -
   A collection of devices connected through Bluetooth technology in an ad hoc fashion.
6. What are the three main types of connection used by Bluetooth? -
   Single slave, Master slave, Scatternet .
7. What is FEC in Bluetooth? -
   Forward Error Correction is a method by which Bluetooth increases its noise immunity. FEC is a method that enables a receiver to not only detect, but also correct errors in a transmission.
8. Which method is primarily used for Voice transfer? -
   Synchronous Connection Oriented (SCO) is a method primarily used for Voice transfer.
9. Which Bluetooth version uses adaptive frequency hopping? Why? -
   In Version 1.2 Adaptive frequency hopping method is used, which improves resistance to radio interference, and provides higher transmission speed.
10. How many SCO links are there in a piconet? -
    In a piconet, there can be up to three SCO links of 64,000 bits per second each.
11. what is the total number of masters and slaves in a piconet? -
    1 Master and 7 Slaves.
12. Which method is used for Data transfer? -
    Asynchronous Connectionless (ACL) is Data transfer method in Bluetooth
13.