Network+(Module 1) Flashcards
client-server network definition
Administration paradigm where some host machines are designated as providing server and services, and other machines are designated as client devices that only consume server services.
peer-to-peer network definition
Administration paradigm whereby any computer device may be configured to operate as both server and client.
local area network (LAN) definition
Network scope restricted to a single geographic location and owned/managed by a single organization.
Small office/home office (SOHO) network definition
Category of network type and products that are used to implement small-scale LANs and off-the-shelf Internet connection types.
Datacenter definition
Facility dedicated to the provisioning of reliable power, environmental controls, and network fabric to server computers.
wide area network (WAN) definition
Network scope that spans a large geographical area, incorporating more than one site and often a mix of different media types and protocols plus the use of public telecommunications networks.
topology definition
Network specification that determines the network’s overall layout, signaling, and dataflow patterns.
point to point link definition
A point-to-point topology is one where two nodes have a dedicated connection to one another.
bandwidth definition
Generally used to refer to the amount of data that can be transferred through a connection over a given period. Bandwidth more properly means the range of frequencies supported by transmission media, measured in Hertz.
star topology definition
In a star network, each node is connected to a central point, typically a switch or a router. The central point mediates communications between the attached nodes. When a device such as a hub is used, the hub receives signals from a node and repeats the signal to all other connected nodes. Therefore the bandwidth is still shared between all nodes. When a device such as a switch is used, point-to-point links are established between each node as required. The circuit established between the two nodes can use the full bandwidth capacity of the network media.
hub-and-spoke topology definition
Wide area network topology with the same layout as a star topology.
mesh topology definition
A topology often used in WANs where each device has (in theory) a point-to-point connection with every other device (fully connected); in practice, only the more important devices are directly interconnected (partial mesh).
Which of the following networking terms refers to the nodes that send and receive data traffic?
- End systems
- Network protocols
- Network links
- Intermediate nodes
End systems
What type of network would BEST meet your requirements where each computer acts as both a client and a server?
- Peer-to-Peer network
- Virtual Private network
- Client-Server network
- Enterprise network
Peer-to-Peer network
A growing company has recently moved into a new office space with 50 employees, printers, and a centralized server. Which network would be MOST effective?
- Small and Medium-sized Enterprise (SME) network
- Wide Area Network (WAN)
- Data Center
- Small Office/Home Office (SOHO) network
Small and Medium-sized Enterprise (SME) network
Which type of network would be MOST suitable for connecting branch offices in different countries?
- Small and Medium-sized Enterprise (SME) network
- Wide Area Network (WAN)
- Local Area Network (LAN)
- Small Office/Home Office (SOHO) network
Wide Area Network (WAN)
When referencing network topologies, what distinguishes half-duplex from full-duplex communication?
- Half-duplex communication can only occur in one direction
- Full-duplex communication is limited to one direction at a time
- Half-duplex allows for data in both directions, but not simultaneously; full-duplex permits simultaneous two-way data transmission
- Half-duplex uses a single cable, full-duplex uses separate cables
Half-duplex allows for data in both directions, but not simultaneously; full-duplex permits simultaneous two-way data transmission
Your company has a network where all devices can communicate regardless of physical connections. What type of network topology does this describe?
- Star topology
- Ring topology
- Mesh topology
- Logical topology
Logical topology
You manage a network using a star topology. What effect will removing one cable have?
- Only devices on one side of the missing cable will communicate
- All devices except the device with the drop cable will communicate
- Devices on one side will communicate, others will not
- No devices will communicate
All devices except the device connected with the drop cable will be able to communicate
Which of the following topologies connects each device to a central forwarding appliance?
- Bus
- Mesh
- Star
- Ring
Star
You have a network with a full mesh topology, and a link breaks between two devices. What is the effect?
- Device A will communicate with all except Device B
- Device A will communicate with all other devices
- Device A will not communicate with any device
- No devices will communicate
Device A will be able to communicate with all other devices
You�ve implemented an ad hoc wireless network without an access point. What physical topology have you used?
- Star
- Mesh
- Bus
- Ring
Mesh
Which topology BEST saves power and scales easily for IoT sensor devices?
- Mesh
- Bus
- Ring
- Star
Mesh
Open Systems Interconnection (OSI) reference model definition
Assigns network and hardware components and functions at seven discrete layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Addressing definition
Unique identifier for a network node, such as a MAC address, IPv4 address, or IPv6 address
Encapsulation definition
A method by which protocols build data packets by adding headers and trailers to existing data.
protocol data unit (PDU) definition
Network packet encapsulating a data payload from an upper layer protocol with header fields used at the current layer.
Physical layer (PHY) definition
Lowest layer of the OSI model providing for the transmission and receipt of data bits from node to node. This includes the network medium and mechanical and electrical specifications for using the media. Also referred to as layer 1.
Transceiver definition
Component in a network interface that converts data to and from the media signalling type. Modular transceivers are designed to plug into switches and routers.
Repeater definition
Layer 1 device that regenerates and retransmits signals to overcome media distance limitations.
hub definition
Layer 1 (Physical) network device used to implement a star network topology on legacy Ethernet networks, working as a multiport repeater.
Media converter definition
Layer 1 (Physical) network device that translates signals received over one media type for transmission over a different media type.
Data Link layer definition
OSI model layer responsible for transferring data between nodes. Also called layer 2
Network adapter or network interface card (NIC) definition
Adapter card that provides one or more Ethernet ports for connecting hosts to a network so that they can exchange data over a link.
Bridge definition
Intermediate system that isolates collision domains to separate segments while joining segments within the same broadcast domain.
Switch definition
Intermediate system used to establish contention-free network segments at layer 2 (Data Link).
Wireless access point (AP) definition
A device that provides a connection between wireless devices and can connect to wired networks, implementing an infrastructure mode WLAN.
Network layer definition
OSI model layer responsible for logical network addressing and forwarding.
firewall definition
Software or hardware device that protects a network segment or individual host by filtering packets to an access control list.
access control list (ACL) definition
The collection of access control entries (ACEs) that determines which subjects (user accounts, host IP addresses, and so on) are allowed or denied access to the object and the privileges given (read-only, read/write, and so on).
Transport layer definition
OSI model layer responsible for ensuring reliable data delivery.
Session layer (layer 5) definition
OSI model layer that provides services for applications that need to exchange multiple messages (dialog control). Also referred to as layer 5.
