Module 1 - Communications in a Connected World
What type of network is defined by two computers that can both send and receive requests for resources? A - Peer to Peer B - Client/Server C - Enterprise D - Campus
A - Peer to Peer
A basic unit of information that represents one of two discrete states is known as a: A - Bit B - Byte C - Octet D - Electrical Signal
A - Bit
A computer that has software installed to provide information such as email or web pages to other devices is known as a: A - Client B - Server C - Smartphone D - Smart Host
A - Client
What is a characteristic of a peer-to-peer application? A - Peer to Peer application developers typically provide their own transport layer protocol for their applications B - It can be used on a peer to peer network C - Both Host Devices load a user interface and the same background service during the communication D - The host who initiates the communication becomes the client and the other host becomes the server
A - Peer to Peer application developers typically provide their own transport layer protocol for their applications
Cobb lives on a farm several kilometers outside of Cobb, Tanzania. Which of the following end devices is she most likely to use to connect to the internet? (Choose two.) A - Smartphone B - Network Printer C - Telepresence Endpoint D - Wireless Tablet E - Wireless Router
A - Smartphone D - Wireless Tablet
What are two functions of end devices on a network? (Choose two.) A - They are the interface between humans and the communication network B - They filter the flow of data to enhance security C - They originate the data that flows through the network D - They provide the channel over which the network message travels E - They direct data over alternate paths in the event of link failures
A - They are the interface between humans and the communication network C - They originate the data that flows through the network
Which of the following measurements includes any latency encountered during data transmissions? A - Throughput B - Speed C - Bandwidth D - Data Rate
A - Throughput
What is a Host?
All computers connected to a network that participate directly in network communication are classified as hosts. Hosts can send and receive messages on the network.
Most ISPs (Internet Service Providers) provide their user's plans with download speeds of millions of bytes per second? A - Kilo-Bytes B - Mega-Bytes C - Giga-Bytes D - Tera-Bytes
Answer: B - Mega-Bytes Kilo-Bytes (Thousands or 10^3) Mega-Bytes (Millions or 10^6) Giga-Bytes (Billions or 10^9) Tera-Bytes (Trillions or 10^12) See metric prefixes!
What is the delay in the amount of time for data to travel between two points on a network? A - Throughput B - Latency C - Bandwidth D - Goodput
B - Latency
Which of the following methods of signal transmission uses frequencies or pulses of light? A - Electrical Signals B - Optical Signals C - Wireless Signals
B - Optical Signals
A smartphone uses web browser software to request and display a web page. The smartphone is considered what type of computer? A - Client B - Server C - Smartphone D - Smart Host
B - Server
Which term is used to describe a network device with the primary function of providing information to other devices? A - Workstation B - Server C - Console D - Client
B - Server
What type of network allows computers in a home office or a remote office to connect to a corporate network? A - Small Home Network B - Small Office Home Office Network C - Medium to Large Network D - World Wide Network
B - Small Office Home Office Network
Fabio 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 Fabio most likely use? (Choose two.) A - Router B - Tablet C - Desktop Computer D - WAN Media E - LAN Media F - Wireless Media
B - Tablet F - Wireless Media
What is the Internet? A - Small Isolated Internal Network of a Company B - Application Used to Access the World Wide Web C - A Network of Networks D - Physical Media used by Computers to Access the Web
C - A Network of Networks
The capacity of the medium to carry data is known as: A - Throughput B - Speed C - Bandwidth D - Data Rate
C - Bandwidth
What allows digital devices to interconnect and transmit data? A - Smart Phone B - Global Positioning Sensor GPS C - Network D - Sensor
C - Network
Mooki 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 Mooki most likely take with him to the job? A - Multilayer Switch B - Firewall Appliance C - Wireless Router D - Desktop Computer E - LAN Switch
C - Wireless Router
Which of the following methods of signal transmission is achieved by using infrared, microwave, or radio waves through the air? A - Electrical Signals B - Optical Signals C - Wireless Signals
C - Wireless Signals
What is a Peer to Peer Network? 😓
Computers on a network acting both as clients and servers. The simplest form can be just two directly connected computers exchanging data or performing services for each other. Multiple PCs can be connected to form larger P2P networks. Disadvantages of a P2P network can be slower speeds from high traffic on a network and limited resources of devices being used as both clients and servers at the same time.
What are End Devices?
Computers, phones, tablets, etc.
What is an example of a binary value from everyday life? A - Speed of a traveling car B - Brightness of a light bulb C - Room temperature D - A simple light switch
D - A simple light switch
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: A - Secret Data B - Volunteered Data C - Observed Data D - Inferred Data
D - Inferred Data
A network where two computers are communicating with each other as both a client and as a server is known as a: A - Client to Server Network B - Client to Client Network C - Server to Server Network D - Peer to Peer Network
D - Peer to Peer Network
What can be placed in or on a package so that it can be tracked? A - Network Interface Card B - Sensor C - Actuator D - RFID Tag
D - RFID Tag
What type of network must a home user access in order to do online shopping? A - LAN B - Bluetooth C - NFC D - The Internet
D - The Internet
Bandwidth is typically measured in: A - Total Number of Bytes B - Bytes per Second C - Bytes per Millisecond D - Total Number of Bits E - Bits per Second F - Bits per Millisecond
E - Bits per Second
What is a Client?
Hosts that have software installed that enables the hosts to request and display the information obtained from the server. An example of client software is a web browser.
What is a Server?
Hosts that have software installed which enable them to provide information, like email or web pages, to other hosts on the network.
What is a small office/home office (SOHO) network?
Networks installed in small offices, or homes and home offices that let you share resources such as printers, documents, pictures, and music, between a few local users.
*BONUS* :) What is the IoT (Internet of things)?
Physical devices such as Sensors (aka transducers) and actuators on a network that are capable of interacting and gathering data. Ex. Sensor - Switches, gauges, cameras, etc. Actuators - Pump, valve, etc. (Nearly 70 percent of IoT devices use the Linux Kernel)
What are Intermediate Devices?
Routers, Switches, etc.
What is a Local Network?
They can range from simple networks consisting of two computers, to networks connecting hundreds of thousands of devices.
What is Observed Data?
This is captured by recording the actions of individuals, such as location data when using cell phones.
What is Volunteered Data?
This is created and explicitly shared by individuals, such as social network profiles. This type of data might include video files, pictures, text or audio files.
What is Inferred Data?
This is data such as a credit score, which is based on analysis of volunteered or observed data.
What is Network Media?
Wireless media (Radio Waves) LAN Media (Ethernet) WAN Media (Coaxial cable, Fiber)
What is a Byte?
a group of binary digits or bits (usually eight) operated on as a unit.
