9814737
Descrição
Quiz por Kessi Silva, atualizado more than 1 year ago
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Criado por Kessi Silva
mais de 6 anos atrás
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Questão 1
Questão
1. In the accompanying graphic, what is the name for the section of the MAC address marked as unknown?
Responda
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IOS
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OSI
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ISO
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OUI
Questão 2
Questão
__________on an Ethernet network is the retransmission delay that’s enforced when a collision occurs.
Responda
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Backoff
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Carrier sense
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Forward delay
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Jamming
Questão 3
Questão
On which type of device could the situation shown in the diagram occur?
Responda
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Hub
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Switch
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Router
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Bridge
Questão 4
Questão
In the Ethernet II frame shown here, what is the function of the section labeled “FCS”?
Responda
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Allows the receiving devices to lock the incoming bit stream.
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Error detection
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Identifies the upper-layer protocol
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Identifies the transmitting device
Questão 5
Questão
A network interface port has collision detection and carrier sensing enabled on a shared twisted-pair network. From this statement, what is known about the network interface port?
Responda
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This is a 10 Mbps switch port.
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This is a 100 Mb/s switch port.
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This is an Ethernet port operating at half-duplex.
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This is an Ethernet port operating at full-duplex.
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This is a port on a network interface card in a PC.
Questão 6
Questão
For what two purposes does the Ethernet protocol use physical addresses? (Choose two.)
Responda
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To uniquely identify devices at layer 2
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To allow communication with devices on a different network
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To differentiate a layer 2 frame from a layer 3 packet
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To establish a priority system to determine which device gets to transmit first
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To allow communication between different devices on the same network
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To allow detection of a remote device when its physical address is unknown
Questão 7
Questão
Between which systems could you use a cable that uses the pinout pattern shown here?
Responda
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With a connection from a switch to a switch
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With a connection from a router to a router
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With a connection from a host to a host
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With a connection from a host to a switch
Questão 8
Questão
In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)
Responda
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When they receive a special token
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When there is a carrier
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When they detect that no other devices are sending
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When the medium is idle
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When the server grants access
Questão 9
Responda
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Fiber optic
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Crossover Gigabit Ethernet cable
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Straight-through Fast Ethernet
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Coaxial
Questão 10
Questão
When configuring a terminal emulation program, which of the following is an incorrect setting?
Responda
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Bit rate: 9600
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Parity: None
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Flow control: None
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Data bits: 1
Questão 11
Questão
Which part of a MAC address indicates whether the address is a locally or globally administered address?
Responda
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FCS
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I/G bit
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OUI
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U/L bit
Questão 12
Questão
What cable type uses the pinout arrangement shown below?
Responda
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Fiber optic
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Rolled
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Straight-through
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Crossover
Questão 13
Questão
Which of the following is not one of the actions taken in the operation of CSMA/CD when a collision occurs?
Responda
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A jam signal informs all devices that a collision occurred.
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The collision invokes a random backoff algorithm on the systems involved in the collision.
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Each device on the Ethernet segment stops transmitting for a short time until its backoff timer expires.
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All hosts have equal priority to transmit after the timers have expired.
Questão 14
Questão
Which of the following statements is false with regard to Ethernet?
Responda
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There are very few collisions in full-duplex mode.
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A dedicated switch port is required for each full-duplex node.
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The host network card and the switch port must be capable of operating in full-duplex mode to use full-duplex.
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The default behavior of 10Base-T and 100Base-T hosts is 10 Mbps half-duplex if the autodetect mechanism fails.
Questão 15
Questão
In the following diagram, identify the cable types required for connections A and B.
Responda
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A= crossover, B= crossover
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A= crossover, B= straight-through
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A= straight-through, B= straight-through
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A= straight-through, B= crossover
Questão 16
Questão
In the following image, match the cable type to the standard with which it goes.
1000Base-T ::::: IEEE 802.3u
1000Base-SX ::: IEEE 802.3
10Base-T ::::::::: IEEE 802.3ab
100Base-TX ::::: IEEE 802.3z
Responda
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IEEE 802.3u ::::::: 100Base-Tx IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 1000Base-SX
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IEEE 802.3u :::::::1000Base-T IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 100Base-Tx IEEE 802.3z ::::::: 1000Base-SX
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IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 100Base-Tx
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IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 1000Base-T IEEE 802.3ab ::::: 10Base-T IEEE 802.3z ::::::: 100Base-Tx
Questão 17
Questão
The cable used to connect to the console port on a router or switch is called a _________cable.
Responda
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Crossover
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Rollover
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Straight-through
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Full-duplex
Questão 18
Questão
Which of the following items does a socket comprise?
Responda
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IP address and MAC address
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IP address and port number
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Port number and MAC address
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MAC address and DLCI
Questão 19
Questão
Which of the following hexadecimal numbers converts to 28 in decimal?
Responda
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1c
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12
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15
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ab
Questão 20
Questão
What cable type is shown in the following graphic?
Responda
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Fiber optic
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Rollover
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Coaxial
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Full-duplex
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