Multiple choice urgent please:

QUESTION 1

1. Hamed and Shaid can talk to each other over a communication medium, both can communicate but they cannot talk at the same time. What type of communication is between them?

   		a)Unidirectional
   		b)Simplex
   		c)Full duplex
   		d)Half duplex

QUESTION 2

1. Which of the following is the most important resources while doing data communication?

   		a)media
   		b)protocol
   		c)bandwidth
   		d)QoS

QUESTION 3

1. Which of the following is TRUE about PCM encoder?

   		a)The quatntized values then decoded as stream of bits
   		b)The digital signal is sampled
   		c)The quantized valued are encoded as streams of bytes.
   		d)The sampled signal is quantized

QUESTION 4

1. On the process of communication between a sender and receiver, the receiver received a duplicate frame. Which of the following layer of OSI model handles the error now?

   		Data Link
   		Transport
   		Physical
   		Network

QUESTION 5

1. Which of the layer decided about the connection oriented communication and connection less communication?

   		Physical
   		Transport
   		Network
   		Data Link

QUESTION 6

1. One of the following statement is INCORRECT about the Ethernet hardware address.

   		It consists of 6 octets
   		It consists of 32 bits
   		It consists of 48 bits
   		It consists of 12 hexadecimal number

QUESTION 7

1. Which of the following method share the bandwidth of the channel in time?

   		TDMA
   		CDMA
   		FDMA
   		None of the listed

QUESTION 8

1. A __________ type of cable that supports bandwidth of 10 Gbps and up.

   		Copper
   		Coaxial
   		Fiber Optic
   		Twisted pair

QUESTION 9

1. Which one of the following statements is CORRECT?

   		In a bus & star topologies if a node fails then only the node which failed will be affected
   		In a bus & star topologies if a node fails then the network failure will happen only in the star topology
   		In a bus star topologies if a node fails the entire network fails
   		In a bus & star topologies if a node fails then the network failure will happen only in the bus topology

QUESTION 10

1. Arrange the following types of Networks according to their size, from smallest to largest.

   		LAN, MAN, WAN
   		WAN, LAN , MAN
   		WAN, MAN, LAN
   		MAN, LAN , WAN