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chapter 6 review

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IT ESSENTIALS CHAPTER 6 REVIEW

Pregunta 1 de 23

1

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?

Selecciona una de las siguientes respuestas posibles:

  • repeater

  • hub

  • switch

  • router

Explicación

Pregunta 2 de 23

1

A customer is considering a multipurpose device to create a home network. Which three devices are usually integrated into a multipurpose network device (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

  • email server

  • router

  • switch

  • web server

  • wireless access point

  • print server.

Explicación

Pregunta 3 de 23

1

Which technology would be recommended for a business that requires workers to access the internet while visiting customers at many different locations?

Selecciona una o más de las siguientes respuestas posibles:

  • ADSL

  • VPN

  • cellular

  • ISDN

Explicación

Pregunta 4 de 23

1

When is a dial-up connection used to connect to an Internet provider?

Selecciona una o más de las siguientes respuestas posibles:

  • When a high-speed connection is provided over a cable TV network

  • When a digital connection is provided using ISDN

  • When a regular telephone line is used

  • when a cellular telephone provides the service

Explicación

Pregunta 5 de 23

1

Which type of connection to the internet is capable of the fastest transfer rates?

Selecciona una o más de las siguientes respuestas posibles:

  • ISDN BRI

  • dial-up

  • ISDN PRI

  • cable

Explicación

Pregunta 6 de 23

1

Which statement describes the logical topology for a LAN?

Selecciona una o más de las siguientes respuestas posibles:

  • It describes how the computers access the LAN medium

  • It depicts the locations of main routers and switches in a LAN

  • It lists the number of computers, routers, and switches on the LAN.0

  • It defines how computers connect to a LAN

Explicación

Pregunta 7 de 23

1

ABC Company requires preventive maintenance for all local network cabling once a year. Which task should be included in the preventive maintenance program?

Selecciona una o más de las siguientes respuestas posibles:

  • Replace all labeling on the cables

  • Replace all cable supports to prevent loose attachment points.

  • Disconnect and reconnect all patch cables.

  • Inspect all patch cables for breaks.

Explicación

Pregunta 8 de 23

1

What is an example of network maintenance?

Selecciona una o más de las siguientes respuestas posibles:

  • Immediately turning off a network device if the network device is making an unusual sound.

  • Educating users on IT policies and procedures.

  • Using cable supports to identify the devices to which the cables are connected

  • Not doing preventive maintenance regularly if the maintenance interrupts network activity

Explicación

Pregunta 9 de 23

1

A technician is troubleshooting a problem where the user claims access to the internet is not working, but there was access to the internet the day before. Upon investigation, the technician determines that the user cannot access the network printer in the office either. The network printer is on the same network as the computer. The computer has 169.254.100.88 assigned as an IP address. What is the most likely problem?

Selecciona una o más de las siguientes respuestas posibles:

  • The router that connects this network to other networks is down.

  • The network interface card driver needs to be updated.

  • The IP default gateway on the computer is incorrect

  • The computer cannot communicate with a DHCP server.

Explicación

Pregunta 10 de 23

1

Which technology is most often used to connect devices to a PAN?

Selecciona una o más de las siguientes respuestas posibles:

  • Bluetooth

  • IEEE 802.11n wireless

  • fiber optic cabling

  • coaxial cabling

Explicación

Pregunta 11 de 23

1

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

  • Data Link

  • Application

  • Network

  • Transport

  • Physical

  • Session

  • Presentation

Explicación

Pregunta 12 de 23

1

A device has an IPv6 address listed as 2001:0D88:75a3:0607:1234;aa10;ba01. What is the interface ID of the device?

Selecciona una o más de las siguientes respuestas posibles:

  • ba01

  • 0607:1234:aa10:ba01

  • 2001:0D88:75a3

  • 2001:0D88

Explicación

Pregunta 13 de 23

1

What is a characteristic of the UDP protocol?

Selecciona una o más de las siguientes respuestas posibles:

  • low overhead

  • error correction

  • guaranteed delivery

  • end-to-end establishment before delivery

Explicación

Pregunta 14 de 23

1

What would be a disadvantage of configuring a wireless router or access point to operate only in accordance with the 802.11g protocol standard?

Selecciona una o más de las siguientes respuestas posibles:

  • 802.11a wireless devices will not be able to connect to the wireless network.

  • The 802.11g standard does not support static IP addressing.

  • The 802.11g standard does not support advanced network security features.

  • Using only 802.11g will cause multiple SSIDs to be broadcast.

Explicación

Pregunta 15 de 23

1

What is the maximum segment length that is specified by the 100BASE-T standard?

Selecciona una o más de las siguientes respuestas posibles:

  • 1640 ft (500 m)

  • 984 ft (300 m)

  • 328 ft (100 m)

  • 3280 ft (1000 m)

  • 607 ft (185 m)

Explicación

Pregunta 16 de 23

1

Which two characteristics describe Ethernet technology?

Selecciona una o más de las siguientes respuestas posibles:

  • It is supported by IEEE 802.3 standards.

  • It is supported by IEEE 802.5 standards

  • It typically uses an average of 16 Mb/s for data transfer rates

  • It uses a ring topology

  • It uses the CSMA/CD access control method.

Explicación

Pregunta 17 de 23

1

Which three factors are reasons for a company to choose a client/server model for a network instead of peer-to-peer? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

  • The company network requires secure access to confidential information.

  • Each user understands how to safely share files across a network.

  • All employees passed a strict background check as part of the corporate hiring practices.

  • The data gathered by the employees is critical and should be backed up on a regular basis.

  • The network is small with fewer than eight users.

  • The users need a central database to store inventory and sales information

Explicación

Pregunta 18 de 23

1

What benefit is provided by a computer data network?

Selecciona una o más de las siguientes respuestas posibles:

  • increased security

  • decentralized administration

  • resource sharing

  • simplified troubleshooting

Explicación

Pregunta 19 de 23

1

When would a printer be considered a network host?

Selecciona una o más de las siguientes respuestas posibles:

  • when it is connected to a workstation

  • when it is connected to a laptop

  • when it is connected to a switch

  • when it is connected to a PC

Explicación

Pregunta 20 de 23

1

A user can print to a printer that is on the same network, but the traffic of the user cannot reach the Internet. What is a possible cause of the problem?

Selecciona una o más de las siguientes respuestas posibles:

  • The PC default gateway address is missing or incorrect.

  • The NIC on the PC is faulty

  • The PC has an incorrect IP address.

  • The network cable connected to the user PC is faulty.

Explicación

Pregunta 21 de 23

1

What is identified by the 100 in the 100BASE-TX standard?

Selecciona una o más de las siguientes respuestas posibles:

  • the maximum cable distance in meters

  • the series number of the standard

  • the maximum number of network nodes

  • the maximum bandwidth in Mb/s

Explicación

Pregunta 22 de 23

1

A user installs a new gigabit NIC in a PC. The user notices that the data transfer rate is much slower than expected. What should the user do to fix the problem

Selecciona una o más de las siguientes respuestas posibles:

  • Change the NIC duplex setting from half duplex to full duplex.

  • Disable sleep mode.

  • Disable hibernation mode

  • Change the value assigned to the NIC wake-on-LAN setting.

Explicación

Pregunta 23 de 23

1

A company adds a few refurbished computers to a network. The company finds, however, that the refurbished computers perform significantly worse than the original networked computers do. The original computers performed much faster with applications that required the transfer of data over the network. What should the company technicians do?

Selecciona una o más de las siguientes respuestas posibles:

  • Check if the refurbished computers are using a VPN

  • Check if the network interface cards in the refurbished computers are limited to 10 Mb/s.

  • Check if subnet mask is correct

  • Check if the gateway address is correct.

Explicación

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