Ethernet Networking and Data Encapsulation

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Which of the following items comprise a socket?

If you're using TCP, the virtual circuit is defined by the source and destination port number plus the source and destination IP address and called a socket.

Which of the following is not one of the actions taken in the operation of CSMA/CD when a collision occurs?

The collision will invoke a back-off algorithm on all systems, not just the ones involve in the collision.

Which of the following hexadecimal numbers converts to 28 in decimal?

The hex value 1C is converted as 28 in decimal.

When the I/G bit in a MAC address is set to 1 the transmission is ____________.

The high-order bit is the Individual/Group (I/G) bit. When it has a value of 0, we can assume that the address is the MAC address of a device and that it may well appear in the source portion of the MAC header. When it's a 1, we can assume that the address represents either a broadcast or multicast address in Ethernet.

The cable used to connect to the console port on a router or switch is called a __________ cable.

Although rolled cable isn't used to connect any Ethernet connections together, you can use a rolled Ethernet cable to connect a host EIA-TIA 232 interface to a router console serial communication (COM) port.

_____________on an Ethernet network is the retransmission delay that's enforced when a collision occurs.

BACK-OFF on an Ethernet network is the retransmission delay that's enforced when a collision occurs. When that happens, a host will only resume transmission after the forced time delay has expired. Keep in mind that after the backoff has elapsed, all stations have equal priority to transmit data.

When configuring a terminal emulation program which of the following is an incorrect setting?

Bits per sec: 9600 Data bits: 8 Parity: none Stop bits: 1 Flow control: none

The contention method used by Ethernet is called ____________.

Ethernet networking uses a protocol called Carrier Sense Multiple Access with Collision Detection (CSMA/CD), which helps devices share the bandwidth evenly, while pre- venting two devices from transmitting simultaneously on the same network medium

In which if the following situations can you not use full-duplex?

Hubs are not capable of providing a full-duplex connection.

Which of the following statements is false with regard to Ethernet?

There are no collisions in full-duplex mode.

Which part of a MAC address indicates whether the address is a locally or globally administered address?

When set to 0, this bit represents a globally administered address, as by the IEEE, but when it's a 1, it represents a locally governed and administered address.


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