When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?

The hosts return to a listen-before-transmit mode.
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission

Which statements correctly describe MAC addresses? (Choose three.)

dynamically assigned
 
copied into RAM during system startup

layer 3 address

contains a 3 byte OUI

6 bytes long

32 bits long

Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?

A random delay is used to ensure a collision-free link.
A random delay value for each device is assigned by the manufacturer.
A standard delay value could not be agreed upon among networking device vendors. 
A random delay helps prevent the stations from experiencing another collision during the transmission.

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?

coax cable

rollover cable

crossover cable

straight-through cable

Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?

Presentation
Transport
Data Link
Physical

What is considered a benefit of wireless as a media choice?

more host mobility
lower security risks
reduced susceptibility to interference
less impact of the surroundings on the effective coverage area

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

the magnetic field around the adjacent pairs of wire
the use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media simultaneously

What are three measures of data transfer? (Choose three.)

goodput
frequency
amplitude
throughput
crosstalk
bandwidth

Which characteristics describe fiber optic cable? (Choose two.)

It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
It is the most expensive type of LAN cabling.

Which fiber connector supports full duplex Ethernet?

Third one is the correct Answer

In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?

coax
fiber
Cat5e UTP
Cat6 UTP
STP

What is a possible effect of improperly applying a connector to a network cable?

Data will be forwarded to the wrong node.

Data transmitted through that cable may experience signal loss.

An improper signaling method will be implemented for data transmitted on that cable.

The encoding method for data sent on that cable will change to compensate for the improper connection.

Which method of signal transmission uses radio waves to carry signals?

electrical

optical

wireless

acoustic

show interface status Cisco command reference basic Cisco configuration

Command :show interfaces status

Use In : Privileged EXEC Mode

Cisco IOS Command show interfaces status use in switches to view current status of switch ports use full command to switch port monitor.Should be used on privileged EXEC mode

It shows the port name port description, Witch Vlan switch ports belongs to (by default all switch ports belongs to Vlan1), type of port, speed of the ports, current status of the switch ports and the duplex mode (full duplex or half duplex)

What is a primary role of the Physical layer in transmitting data on the network?

create the signals that represent the bits in each frame on to the media

provide physical addressing to the devices

determine the path packets take through the network

control data access to the media

XYZ Company is installing new cable runs on their data network. What two types of cable would most commonly be used for new runs? (Choose two.)

coax
Cat4 UTP
Cat5 UTP
Cat6 UTP
STP

An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?

light injector
OTDR
TDR
multimeter

What characteristic of UTP cable helps reduce the effects of interference?

the metal braiding in the shielding
the reflective cladding around core
the twisting of the wires in the cable
the insulating material in the outer jacket

Which of the following is a characteristic of single-mode fiber-optic cable?

generally uses LEDs as the light source
relatively larger core with multiple light paths
less expensive than multimode
generally uses lasers as the light source

When is a straight-through cable used in a network?

when connecting a router through the console port
when connecting one switch to another switch
when connecting a host to a switch
when connecting a router to another router

In most business LANs, which connector is used with twisted-pair networking cable?

BNC
RJ-11
RJ-45
Type F

Which type of cable run is most often associated with fiber-optic cable?

backbone cable
horizontal cable
patch cable
work area cable