IT Essentials: Chapter 7 Exam

A network specialist has been hired to install a network in a company that assembles airplane engines. Because of the nature of the business, the area is highly affected by electromagnetic interference. Which type of network media should be recommended so that the data communication will not be affected by EMI? -STP -coaxial -fiber optic -UTP

fiber optic

Which pairs of wires change termination order between the 568A and 568B standards? -green and orange -green and brown -blue and brown -brown and orange

green and orange

What is a characteristic of the UDP protocol? -low overhead -guaranteed delivery -error correction -end-to-end establishment before delivery

low overhead

Which layer of the OSI model is responsible for logical addressing and routing? -application -data link -network -transport

network

What TCP/IP model layer is responsible for MAC addressing? -network access -internet -transport -application

network access

What PDU is associated with the network layer of the OSI model? -data -frame -packet -segment

packet

Which two layers of the OSI model correspond to the functions of the TCP/IP model network access layer? (Choose two.) -physical -data link -network -transport -session

physical data link

How many host addresses are available on a network with a subnet mask of 255.255.0.0? -65,534 -254 -16,777,214 -1024

65,534

How many devices can a Bluetooth device connect to simultaneously? -127 -7 -10 -24 -5

7

Which IEEE standard operates at wireless frequencies in both the 5 GHz and 2.4 GHz ranges? -802.11n -802.11g -802.11b -802.11a

802.11n

A device has an IPv6 address of 2001:0DB8:75a3:0214:0607:1234:aa10:ba01 /64. What is the host identifier of the device?

Answer: 0607:1234:aa10:ba01 An IPv6 address is made up of 128 bits that are represented as eight blocks of four hexadecimal digits that are called hextets. Because each hexadecimal digit represents four bits, each hextet represents 16 bits. The /64 network prefix indicates that the first 64 bits, or first four hextets, represent the network portion of the address. Because there are 128 bits in an IPv6 address, this leaves the last 64 bits, or last four hextets, to represent the host identifier. The value for the last four hextets is 0607:1234:aa10:ba01.

Which technology is most often used to connect devices to a PAN? -coaxial cabling -Bluetooth -fiber optic cabling -IEEE 802.11n wireless

Bluetooth

What is a characteristic of a WAN? -It connects multiple networks that are geographically separated. -It spans across a campus or city to enable sharing of regional resources. -It is typically owned and managed by a single home or business. -It requires a wireless access point to connect users to the network.

It connects multiple networks that are geographically separated.

Which two characteristics describe Ethernet technology? (Choose two.) -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 the CSMA/CD access control method. -It uses a ring topology

It is supported by IEEE 802.3 standards. It uses the CSMA/CD access control method.

Which two types of signal interference are reduced more by STP than by UTP? -RFI -white noise -MDF -dispersion -EM

RFI EMI

Which term describes a type of coaxial cable? -RG-6 -568A -UTP -Cat 5e

RG-6

Which three factors are reasons for a company to choose a client/server model for a network instead of peer-to-peer? -The network is small with fewer than eight users. -The company network requires secure access to confidential information. -The users need a central database to store inventory and sales information. -Each user understands how to safely share files across a network. -The data gathered by the employees is critical and should be backed up on a regular basis. -All employees passed a strict background check as part of the corporate hiring practices.

The company network requires secure access to confidential information. The users need a central database to store inventory and sales information. The data gathered by the employees is critical and should be backed up on a regular basis.

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? -The computer cannot communicate with a DHCP server. -The IP default gateway on the computer is incorrect. -The network interface card driver needs to be updated. -The router that connects this network to other networks is down.

The computer cannot communicate with a DHCP server.

Which device provides wireless connectivity to users as its primary function? switch router access point modem

access point

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.) -application -presentation -session -transport -network -data link -physical

application presentation session

What is the correct order of the layers of the TCP/IP model from the top layer to the bottom? -application, session, network, data link, physical -application, internet, network access, transport -network access, transport, internet, application -application, transport, internet, network access

application, transport, internet, network access

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? -repeater -hub -switch -router

switch

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.) -web server -switch -router -email server -wireless access point -print server

switch, router, wireless access point

What is identified by the 100 in the 100BASE-TX standard? -the maximum bandwidth in Mb/s -the maximum cable distance in meters -the maximum number of network nodes -the series number of the standard

the maximum bandwidth in Mb/s

When would a printer be considered a network host? -when it is connected to a switch -when it is connected to a workstation -when it is connected to a laptop -when it is connected to a PC

when it is connected to a switch