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