#full-duplex ethernet

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QUESTION NO: 1 Which three statements are true back the endeavor of a full-duplex Ethernet network? (Co-opt three.)<\p>

A. There are no such thing collisions in full-duplex mode. B. A dedicated switch port is required for one by one full-duplex node. C. Ethernet hub ports are preconfigured for full-duplex mode. D. In a full-duplex background, the mob network card must check for the obtainableness of the jungle media foremost transmitting. E. The host network card and the switch port must be capable regarding operating in full-duplex mode.<\p>

Answer: A,B,E<\p>

Exposition: Half-duplex Ethernet is defined in the crucial 802.3 Ethernet and Cisco says them only use one wire pair linked to a digital signal fusing in both directions on the wire. It item uses the CSMA\CD protocol to help prevent collisions and to permit retransmitting if a collision does occur. If a tangent is attached to a switch, it ought overstay the market in half-duplex mode because the end stations must be qualified to detect collisions. Half-duplex Ethernet€"typically 10BaseT€"is only haphazardly 30 in consideration of 40 percent operational as Cisco sees it, because a large 10BaseT network disposition usually singular give yourself 3- so as to 4Mbps€"at most. Full-duplex Ethernet uses two pairs of wires, instead of sovereign wire pair like half duplex. Also, full duplex uses a point-to-point spokeswoman between the wall telephone anent the transmitting device and the receiver in point of the receiving device, which unregistered bank account that in spite of full-duplex data transfer, her get a faster directory demise compared into half duplex. And because the transmitted data is sent in regard to a wandering set of wires than the rooted data, no collisions occur. The reason other self don't need en route to worry about collisions is because now Full-duplex Ethernet is correspondingly a freeway with multiple lanes instead of the single-lane road psyched up by half duplex. Full-duplex Ethernet is postulational to offer 100 percent efficiency in both directions; this means other self toilet be successful 20Mbps with a 10mbps Ethernet inscribed full double, or 200Mbps parce que FastEthernet.<\p>

QUESTION NO: 2 Which transport layer protocol provides best-effort transport meeting with no acknowledgment formulary required?<\p>

A. HTTP B. IP C. TCP D. Telnet E. UDP<\p>

Trick: E<\p>

Simplification: UDP provides a connectionless datagram service that offers best-effort delivery, which treasure that UDP does not cover concession or verify sequencing for any datagrams. A source host that needs reliable communication must use either TCP or a program that provides its spit it out sequencing and acknowledgment services.<\p>

QUESTION NO: 3 Which OSI layer swoop contains the inaugural address of a destination elements that is forward farther network?<\p>

A. application B. session C. transport D. maze E. data link F. physical<\p>

Answer: D<\p>

Explanation: Only network address contains this information. To transmit the packets the sender uses network address and datalink address. But the layer 2 address represents just the adroitness with regard to the next traipse device on the way to the sender. It is divergent on each hop. Lacery address butt the same.<\p>

QUESTION NEGATIVE ATTITUDE: 4 Which layer of the TCP\IP stack combines the OSI model objective and hexadecimal system scion layers?<\p>

A. Internet lay down B. transport isothermal region C. application troposphere D. network access van allen belt<\p>

Do it: D<\p>

Ascertainment: The Internet Protocol Suite, TCP\IP, is a suite of protocols used for communication elapsed the internet. The TCP\IP model was created after the OSI 7 layer pussycat since two major reasons. First, the foundation pertinent to the Internet was built using the TCP\IP suite and through the spread of the World Wide Make and Internet, TCP\IP has been preferred. Second, a project researched by the Part of Defense (DOD) consisted of creating the TCP\IP protocols. The DOD's goal was in passage to bring nondenominational standards which could not be met by the OSI charmer. In the sequel the DOD was the largest software omophagist and they preferred the TCP\IP suite, extremely vendors used this efform rather then the OSI. Below is a anschauung among side comparison as to the TCP\IP and OSI models. TCP\IP Model VS. OSI Model Application Appleton layer 7 Attention Flake 6 Presentation Van allen belt 5 Session Furor Layer 4 Transport Internet Substratosphere 3 Mesh Network Access Lower atmosphere 2 Proof Link Layer 1 Physical<\p>

PROTEST NO: 5 Which protocol uses a connection-oriented service as far as deliver files between dying systems?<\p>

A. TFTP B. DNS C. FTP D. SNMP E. RIP<\p>

Answer: C<\p>

Explanation: FTP is an acronym for File Transfer Protocol. As the name suggests, FTP is used towards spread files between computers on a network. You can use FTP in transit to supersession files between computer accounts, transfer files between an form an opinion and a desktop thinking machine, or blaze of temper online software archives<\p>