Network Essential CH 1- 10
A physical topology diagram includes which of the following?
Where host are located. Where network devices are located. Where wiring is installed.
Which IP configuration parameter provides the IP address of a network device that a computer would use to access the internet?
default gateway
Which type of wired media is used to carry digital information at very high speeds over long distances?
fiber- optic cable
Which portion of an IP address uniquely identifies that device on that network?
host
Which of the following is an advantage of coaxial cable compared to UTP?
improved data carrying characteristics
Ethernet switches add entries to their MAC address table based on what field of the Ethernet frame?
source MAC address
Which wireless technology is used on smart phones to transmit data to another device within very close proximity?
NFC
Which of the following methods of signal transmission uses frequencies or pulses of light?
Optical signals
Host-B receives an ARP request. Host-B will return an ARP Reply if:
The IP address in the ARP request matches its own IP address.
An ARP request is sent out as:
a broadcast, so all devices on the same network will receive it
What allows digital devices to interconnect and transmit data?
a network
What is an example of a binary value from everyday life?
a simple light switch
Which type of Ethernet cable should be used to directly connect two devices that both use the same pins for transmitting and receiving data?
crossover twisted- pair cable
A type of interference that occurs when cables are bundled together for long lengths is known as:
crosstalk
Which term describes the interference when electrical impulses from one cable cross over to an adjacent cable?
crosstalk
Which term refers to the set of rules that define how a network operates?
standard
Connecting a unlike-devices, such as a computers to an Ethernet switch, requires what type of UTP Ethernet cable?
straight- through
Rosalía works as a community health worker in Rio Claro, Brazil. Most of her time is spent making home visits to provide primary care to people in her community. However, she requires internet access to maintain her patient records and provide videoconferencing with a doctor, when needed. What end device and media type does Rosalía most likely use? (Choose two.)
tablet wireless media
What type of network must a home user access in order to do online shopping?
the internet
A network administrator would like to determine the path a packet takes to reach the destination 192.168.1.1. What is the best command to determine the network path?
tracert 192.168.1.1
When using your credit card to make purchases at several places, the credit card company can use this information to learn about your location and your preferences. This type of personal data is known as:
Inferred data
What is a purpose of an IP address?
It identifies the source and destination of data packets on a network.
Which standards organization publishes current Ethernet standards?
IEEE
Which organization publishes and manages the Request for Comments (RFC) documents?
IETF
Which type of technology is used to provide digital data transmissions over cell phone networks?
4G
The capacity of the medium to carry data is known as:
Bandwidth
Which two layers of the OSI Model maps directly as the single network access layer in the TCP/IP model?
Data link Physical
Ethernet switches make their forwarding decision based on what field of the Ethernet frame?
Destination MAC address
What are two recommendations for an organization that is implementing network device naming standards?
Each device should have a unique, meaningful name. Device names should be in a consistent format.
The destination MAC address of an Ethernet broadcast in hexadecimal is:
FFFF.FFFF.FFFF
Which type of cabling is immune to RFI and EFI?
Fiber optic
Which Ethernet frame field indicates the beginning of an Ethernet frame?
Preamble and SFD
What can be placed in or on a package so that it can be tracked?
RFID tag
Which of the following is the most common type of connector used to terminate twisted-pair cabling?
RJ- 45
The IETF (Internet Engineering Task Force) records and publishes internet standards in documents known as:
Request for Comments (RFC)
What type of Ethernet twisted-pair cable may be required when the electrical environment has strong EMI and RFI interference?
STP
Which type of network cable contains multiple copper wires and uses extra shielding to prevent interference?
STP
What type of network allows computers in a home office or a remote office to connect to a corporate network?
Small office home network
Which protocol is responsible for guaranteeing reliable delivery?
TCP
Which of the following is NOT a criterion for choosing a network media?
The type of data that can be transmitted
What are two functions of end devices on a network? (Choose two.)
They originate the data that flows through the network. they are the interface between human and communications network.
Which of the following measurements includes any latency encountered during data transmissions?
Throughput
Which three elements do all communication methods have in common?
Transmission medium, message source, message destination
When an Ethernet frame is sent out an interface, the destination MAC address indicates:
When an Ethernet frame is sent out an interface, the destination MAC address indicates:
Bandwidth is typically measured in:
bits per second
A smartphone uses web browser software to request and display a web page. The smartphone is considered what type of computer?
client
Which type of data cable is used by television companies to carry data and video signals?
coaxial
What is the most common type of wired media used by TV companies to connect and carry signals to a set-top box within a home?
coaxial cable
Directly connecting like-devices, such as two computers, requires what type of UTP Ethernet cable?
crossover
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?
fiber- optic
Which type of network cable is commonly used in backbone networks and telephone companies?
fiber- optic cable
Which statement describes the physical topology for a LAN?
it defines how hosts and network devices connect to the LAN
Which statement describes a MAC address?
it is a physical address assigned to an ethernet NIC by the manufacture
What is the delay in the amount of time for data to travel between two points on a network?
latency
Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model?
presentation, application, session
The rules that govern network communications including the message format, message size, timing, and encapsulation, are known as network:
protocols
Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
router
Eilert recently got a job with a computer support services company in his hometown of Falun, Sweden. A customer has asked for someone to come connect their home network to the internet. They only have a cable modem. Which of the following intermediary devices would Eilert most likely take with him to the job?
wireless router
Host-A has an Ethernet frame to send to Host-B on the same network. Host-A knows the IP address of Host-B but not its MAC address. What message will Host-A send to determine the MAC address of Host B?
ARP Request
A basic unit of information that represents one of two discrete states is known as a:
Bit
Which of the following is a wireless communication technology that enables a smartphone to communicate with a payment system within a few centimeters away?
Bluetooth
Which wireless technology can be used to connect wireless headphones to a computer?
Bluetooth
What is a characteristic of a peer-to-peer application?
Both host devices load a user interface and the same background service during the communication.
When a switch receives an Ethernet frame and the destination MAC address of that frame is not in its MAC address table, the switch will:
Forward the frame out all part except in the incoming port
When an Ethernet switch receives a frame that is broadcast, it will:
Forward the frame out all ports except the incoming port
Which three fields are found in an 802.3 Ethernet frame?
Frame check sequence, destination physical address, source physical address
What is a technology used in a cellular telephone network?
GSM(Global System for Mobile Communication)
Host-A sends an ARP request and receives an ARP reply from Host-B. What is in the ARP reply that Host-A did not know and needs to communicate with Host-B?
Host B's MAC address
What is a characteristic of a SOHO network?
It is a small network that connects a few computers to each other and to the internet.
A group of newly hired entry-level network engineers are talking about the network cabling they are going to have to install as a team. What is a characteristic of Ethernet straight-through UTP cable?
It is susceptible to interferences from EMI and RFI.
The Ethernet protocol is at what layer of the OSI Model?
Layer 2 Data Link
What identifier is used at the data link layer to uniquely identify an Ethernet device?
MAC address
Which of the following is a low-power, shorter range wireless technology that is intended to replace wired connectivity for accessories such as speakers or a mouse?
NFC
Which organization defines the two different patterns, or wiring schemes, called T568A and T568B?
TIA/EIA
Which protocol is used by routers to forward messages?
TP
A traveling sales representative uses a cell phone to interact with the home office and customers, track samples, make sales calls, log mileage, and upload/download data while at a hotel. Which internet connectivity method would be a preferred method to use on the mobile device due to the low cost?
Wi-Fi
Which statement defines a data communications protocol?
a set of rules that govern the communication process
Which design layer provides connectivity to devices on an Ethernet LAN?
access
An IP address is considered what type of address?
logical
Which category of network components includes wires and cables used in a wired network?
media
IP addressing occurs at what layer of the OSI Model?
network
When the growth of a small network is being planned, which design element will include the physical and logical topology of the network?
network documentation
What is the internet?
network of networks
Ethernet hubs are considered:
obsolete
What type of network is defined by two computers that can both send and receive requests for resources?
peer- to- peer
A network where two computers are communicating with each other as both a client and as a server is known as a:
peer- to- peer network
An Ethernet MAC address is considered what type of address:
physical
Which address does not change when a device is connected to a new network?
physical
Which two layers of the OSI model specify protocols that are associated with Ethernet standards?
physical, data link
Which command can be used to verify connectivity between two host devices?
ping
A computer that has software installed to provide information such as email or web pages to other devices is known as a:
server
Which term is used to describe a network device with the primary function of providing information to other devices?
server
A teenager has asked the grandparents for a specific type of mobile technology. The grandparents do not remember the specific name of the device, but remember that the teenager wants to receive a cell phone call on it. Which technology is likely to be the one the teenager wants?
smart watch
Marjani lives on a farm several kilometers outside of Msolwa, Tanzania. Which of the following end devices is she most likely to use to connect to the internet? (Choose two.)
smartphone wireless tablet
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices?
transport
Which is the most common type of wired media to connect end devices to an Ethernet LAN?
twisted- pair cable
