Code:
1
Refer to the exhibit. What is the appropriate cable to use at each of the numbered network connections?
1-crossover; 2-straight-through; 3-crossover; 4-straight-through
1-straight-through; 2-crossover; 3-straight-through; 4-straight-through
1-straight-through; 2-crossover; 3-crossover; 4-straight-through
*1-rollover; 2-crossover; 3-straight-through; 4-straight-through
1-rollover; 2-straight-through; 3-straight-through; 4-straight-through

2
Which two devices are considered OSI Layer 1 devices? (Choose two.)
*hubs
routers
bridges
switches
*repeaters

3
What device is used to connect hosts to an Ethernet LAN and requires a straight-through UTP cable between the hosts and this device?
NIC
router
*switch
server

4
What is the most common type of cabling used in LANs?
STP
*UTP
coax
fiber

5
In which situations would a crossover cable be used to connect devices in a network? (Choose two.)
switch to PC
*switch to hub
switch to router
switch to server
*switch to switch

6


Refer to the exhibit. How many collision domains exist in the network?
1
*2
4
7
8

7
What type of cable would be used to make the connection between the console port of a router and a workstation?
crossover
*rollover
straight-through
patch

8


Which function is a unique responsibility of the DCE devices shown in the exhibit?
transmission of data
reception of data
*clocking for the synchronous link
noise cancellation in transmitted data

9
Which address does a bridge use to make filtering and switching decisions?
source MAC
source IP
*destination MAC
destination IP
network IP address

10
What is characteristic of the operation of a hub?
selectively drops packets that represent potential security risks
*forwards a frame out all interfaces except the inbound interface
based on IP address, dynamically learns the interfaces to which all devices are attached
upon power on, queries the devices on all interface to learn the MAC addresses of the attached devices
transmits a frame to the specific interface to which the device with the MAC destination address is attached

11
Users with systems that are attached to a hub are complaining about poor response time. What device could replace the hub and provide immediate response time improvement?
router
*switch
bridge
repeater

12
Which of the following are benefits of peer-to-peer networks? (Choose three.)
centralized security
*easy to create
very scalable
*no centralized equipment required
*centralized administrator not required
centralized control of assets

13
Which statement is accurate about a WAN link?
*The link transmits data serially.
The link uses a maximum distance of 100 meters.
The link uses the same transmission rate as all other WAN links use.
The link uses the same standardized connector style that is used for all WAN technologies.

14


Which items in the exhibit are DTE devices?
A and B
B and C
C and D
*A and D
A, B, C, and D

15
At which layer of the OSI model does the MAC address of a NIC reside?
physical
application
network
transport
*data link
session

16


Refer to the exhibit. A technician measured the lengths of the CAT 5e structured cable runs in the exhibit. How should the technician evaluate the cabling shown in the diagram to the network administrator?
All cabling to work areas are within specifications.
Station A and B may experience intermittent problems because the length exceeds the recommended standard.
*Station B may experience intermittent problems because the length exceeds the recommended standard.
Station C may experience intermittent network connectivity because the length is less than the recommended standard.
Station A and B will have intermittent problems because the length exceeds the recommended standard.
Station C will not have network connectivity because the length is less than the recommended standard.

17
Which statement describes a typical use of Gigabit Ethernet?
to provide high-speed desktop connectivity for average users
to provide connectivity to low to medium volume applications
to provide medium volume connectivity to workgroup servers
*to provide high-speed connectivity for backbones and cross connects

18


The ends of a UTP cable are shown in the exhibit. Which cable configuration is shown?
crossover
rollover
reversed-pair
*straight-through
split-pair
console

19


The ends of a UTP cable are shown in the exhibit. Which cable configuration is shown?
console
*crossover
rollover
reversed-pair
split-pair
straight-through

20
Which of the following are benefits of a wireless network? (Choose two.)
higher data speeds
better security
*mobility
less expensive NIC cards
*no need to run cables to hosts


chapter test 6 met 100 %
Code:
Refer to the exhibit. Host A is communicating with host F. What happens to a frame sent from host A to host F as it travels over the Ethernet segments?
*The frame format remains the same across each Ethernet segment.

How many hexadecimal digits are in a MAC address?
*12

What are three functions of a NIC in a PC? (Choose three.)
*A NIC connects the PC to the network media.
*A NIC detects collisions on the Ethernet segment.
*A NIC passes the contents of selected frames to the upper OSI layers.

At what layer of the OSI model does a MAC address reside?
*2

A router has an Ethernet, Token Ring, serial, and ISDN interface. Which interfaces will have a MAC address?
*Ethernet and Token Ring interfaces

In an Ethernet LAN, how does the NIC know when it can transmit data?
*An Ethernet NIC transmits data after listening for the absence of a signal on the media.

Which characteristics describe carrier sense multiple access collision detect (CSMA/CD)? (Choose three.)
*nondeterministic
*collision environment
*first-come, first-served approach

Which two devices can provide full-duplex Ethernet connections? (Choose two.)
*NIC
*Layer 2 switch

On a local area network, one workstation can send data on the line while it is receiving data. What type of data transfer does this describe?
*full duplex

Refer to the exhibit. The small office network shown in the exhibit consists of four computers connected through a hub. Which configuration would cause collisions and errors on the network?
*administratively configured full duplex

Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
*No collisions will occur on this link.

Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the same time. How do the hosts respond on the network? (Choose two.)
*After the end of the jam signal, Hosts 1, 2, 3, and 4 invoke a backoff algorithm.
*If a host has data to transmit after the backoff period of that host, the host checks to determine if the line is idle, before transmitting.

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.

Which statement describes how CSMA/CD on an Ethernet segment manages the retransmission of frames after a collision occurs?
*The devices transmitting when the collision occurs DO NOT have priority for retransmission.

Refer to the exhibit. A technician wants to increase the available bandwidth for the workstation by allowing the switch and the NIC on the workstation to transmit and receive simultaneously. What will permit this?
*full-duplex

Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
*A random delay helps prevent the stations from experiencing another collision during the transmission.

In which two layers of the OSI model does Ethernet function? (Choose two.)
*data link
*physical

Which of the following are specified by IEEE standards as sublayers of the OSI data link layer? (Choose two.)
*Logical Link Control
*Media Access Control

Where does the MAC address originate?
*burned into ROM on the NIC card


chapter test 7 met 100%
Code:
Which Ethernet standard does the IEEE 802.3 standard recommend for backbone installations?
*1000BASE-LX

Which statements describe Gigabit Ethernet technology? (Choose two.)
*typically used for backbone cabling
*can be implemented over copper and fiber

Which of the following are Fast Ethernet technologies? (Choose two.)
*100BASE-FX
*100BASE-TX

To make sure timing limitations are not violated when implementing a 10 Mbps Ethernet network involving hubs or repeaters, a technician should adhere to which rule?
*the 5-4-3 rule

At which OSI layer do the differences between standard Ethernet, Fast Ethernet and Gigabit Ethernet occur?
*physical layer

How does 1000BASE-T use the UTP wire pairs to accomplish transmission?
*all four pairs are used in parallel by both hosts to transmit and receive simultaneously

What RJ-45 pins are unused when transmitting and receiving data in an Ethernet 100BASE-T Category 5 UTP cable? (Choose two.)
*4 and 5
*7 and 8

What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?
*100 meters

Which media types can be used in an implementation of a 10BASE-T network? (Choose three.)
*Category 5 UTP
*Category 5e UTP
*Category 3 UTP

Which of the following Ethernet technologies are considered legacy Ethernet? (Choose three.)
*10BASE2
*10BASE5
*10BASE-T