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11.The term duplex refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

A.	cannot talk at once
B.	can receive and send data simultaneously
C.	can send or receive data one at a time
D.	can do one way data transmission only
E.	None of the above

Answer: Option B

12.How many hosts are attached to each of the local area networks at your site?

A.	128
B.	254
C.	256
D.	64
E.	None of the above

Answer: Option B

13.Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

A.	the method of determining which device has access to the transmission medium at any time.
B.	a medium access control technique for multiple access transmission media
C.	a form of TDMA in which circuit switching is used to dynamically change the channel assignments
D.	All of the above
E.	None of the above

Answer: Option C

14.When you ping the loopback address, a packet is sent where?

A.	On the network
B.	Down through the layers of the IP architecture and then up the layers again
C.	Across the wire
D.	through the loopback dongle
E.	None of the above

Answer: Option B

15.Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

A.	FTP
B.	SNMP
C.	SMTP
D.	RPC
E.	None of the above

Answer: Option C

16.Which of the following device is used to connect two systems, especially if the systems use different protocols?

A.	hub
B.	bridge
C.	gateway
D.	repeater
E.	None of the above

Answer: Option C

17.The synchronous modems are more costly than the asynchronous modems because

A.	they produce large volume of data
B.	they contain clock recovery circuits
C.	they transmit the data with stop and start bits.
D.	they operate with a larger bandwidth
E.	None of the above

Answer: Option B

18.A distributed network configuration in which all data/information pass through a central computer is

A.	bus network
B.	star network
C.	ring network
D.	Point-to-point network
E.	None of the above

Answer: Option B

19.Which of the following TCP/IP protocol allows an application program on one machine to send a datagram to an application program on another machine?

A.	UDP
B.	VMTP
C.	X.25
D.	SMTP
E.	None of the above

Answer: Option A

20.What part of 192.168.10.51 is the Network ID, assuming a default subnet mask?

Answer: 192.168.10

11/07/2022 : 10:22 PM

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