Platform(Module 1) Flashcards
Which of the following networking terms refers to the nodes that send and receive data traffic?
- Network links
- Intermediate nodes
- Network protocols
- End systems
End systems
You own a small business and have decided to set up a network where each computer acts as both a client and a server. What type of network would BEST meet your requirements?
- Peer-to-Peer network
- Virtual Private network
- Enterprise network
- Client-Server network
Peer-to-Peer network
A growing company has recently moved into a new office space with 50 employees. Which type of network would be MOST effective for this setup?
- Small and Medium-sized Enterprise (SME) network
- Data Center
- Wide Area Network (WAN)
- Small Office/Home Office (SOHO) network
Small and Medium-sized Enterprise (SME) network
A multinational corporation has its main office in New York and branch offices in London, Tokyo, and Sydney. Which type of network would be MOST suitable for this setup?
- Small Office/Home Office (SOHO) network
- Wide Area Network (WAN)
- Local Area Network (LAN)
Wide Area Network (WAN)
What distinguishes half-duplex from full-duplex communication in a point-to-point link?
- Half-duplex allows for data transmission in both directions, but not simultaneously; full-duplex permits simultaneous two-way data transmission.
- Half-duplex communication can only occur in one direction.
- Full-duplex communication is limited to one direction at a time.
- Half-duplex communication uses a single cable for data transmission.
Half-duplex allows for data transmission in both directions, but not simultaneously; full-duplex permits simultaneous two-way data transmission.
Your company has a network where all devices can communicate with each other as if they were directly connected, regardless of the physical connections. What type of network topology does this describe?
- Mesh topology
- Star topology
- Logical topology
- Ring topology
Logical topology
You manage a network that’s connected using a physical star topology. One of the drop cables connecting a workstation has been removed. Which of the following BEST describes the effect this will have on network communications?
- All devices will be able to communicate.
- All devices except the device connected with the drop cable will be able to communicate.
- Devices on one side of the missing cable will be able to communicate.
- No devices will be able to communicate.
All devices except the device connected with the drop cable will be able to communicate.
Which of the following networking topologies connects each network device to a central forwarding appliance?
- Mesh
- Star
- Bus
- Ring
Star
You have a network that’s connected using a full physical mesh topology. The link between Device A and Device B is broken. Which of the following BEST describes the effect this will have on network communications?
- Device A will be able to communicate with all other devices.
- Device A will be able to communicate with any device except for Device B.
- Device A will not be able to communicate with any other device.
- No devices will be able to communicate with any other device.
Device A will be able to communicate with any device except for Device B.
You’ve implemented an ad hoc wireless network that doesn’t employ a wireless access point. Which type of physical network topology have you implemented in this network?
- Star
- Ring
- Bus
- Mesh
Mesh
A team of network consultants is configuring an Internet of Things (IoT) network. Which of the following network topologies would BEST save power and scale easily to thousands of IoT sensor devices?
- Mesh
- Ring
- Bus
- Star
Mesh
Which of the following are layers of the OSI reference model? (Select three.)
- Connection Layer
- Presentation Layer
- Session Layer
- WAN Layer
- Application Layer
- Encryption Layer
- Transmission Layer
Presentation Layer, Session Layer, Application Layer
What is a Protocol Data Unit (PDU)?
- A measure of data transmission speed
- A type of encryption used in data transmission
- A device that manages data transmission rates
- A chunk of data with protocol-specific headers added at each OSI layer
A chunk of data with protocol-specific headers added at each OSI layer
What is the primary purpose of data encapsulation in network protocols?
- To compress data for faster transmission
- To convert data into an analog signal for transmission
- To encrypt data for secure transmission
- To add additional data headers for routing and delivery
To add additional data headers for routing and delivery
An engineer uses a type of network adapter to connect a fiber link to a router. The transceiver fits into an optical interface on a layer 3 Ethernet router. Of the choices, which layer 1 implementation does the engineer utilize?
- Media converter
- Bridge
- VoIP endpoint
- Switch
Media converter
A communications engineer notices that every time it rains the signal becomes very degraded. Which layer of the OSI model is the engineer most likely troubleshooting?
- Data Link
- Physical
- Transport
- Application
Physical
Which of the following devices operate at the Data Link layer of the OSI model? (Select three.)
- Switches
- Hubs
- Routers
- Repeaters
- Bridges
- Gateways
- Network interface cards (NICs)
Switches, Bridges, Network interface cards (NICs)
When the Data Link layer performs encapsulation, it adds control information to the payload in the form of header fields. Which of the following are header fields added by the Data Link layer during encapsulation? (Select three.)
- Source hardware address
- Window size
- Sequence number
- Checksum for basic error checking
- Destination hardware address
- TTL (Time to Live)
- Encryption type
Source hardware address, Checksum for basic error checking, Destination hardware address
What is the role of an Access Control List (ACL) at Layer 3 (Network layer) of the OSI model?
- To serve as a list of permissions for file access on the network
- To act as a routing protocol for determining the best path for data packets
- To define the maximum size for packets transmitted across the network
- To filter network traffic by permitting or blocking packets based on IP addresses and other criteria
To filter network traffic by permitting or blocking packets based on IP addresses and other criteria
In the OSI model, what is the primary function of the Network layer?
- To move data around an internetwork using logical network and host IDs
- To establish, manage, and terminate connections between applications on different hosts
- To ensure reliable transmission of data across a physical link
- To encode and convert data into signals suitable for transmission over the physical medium
To move data around an internetwork using logical network and host IDs
Which of the following functions are performed by the OSI Transport layer? (Select three.)
- Packet formatting for delivery through a medium
- Data segmentation and reassembly
- Path identification and selection
- End-to-end flow control
- Media access control, logical topology, and device identification
- Reliable message delivery
- Consistent data formatting between dissimilar systems
Data segmentation and reassembly, End-to-end flow control, Reliable message delivery
A security engineer configures software-based port security on a hardware firewall. Which OSI model layer identifies the application ports to configure?
- Layer 4
- Layer 3
- Layer 2
- Layer 1
Layer 4
What role does the Presentation layer (layer 6) of the OSI model play in terms of data compression and encryption?
- The Presentation layer supports data compression and encryption to prepare data for network transmission.
- The Presentation layer is primarily responsible for the physical encryption of data using hardware-based methods.
- The Presentation layer handles the routing of data between different networks and supports encryption protocols like IPsec.
- The Presentation layer is involved in the logical organization of data into frames for transmission.
The Presentation layer supports data compression and encryption to prepare data for network transmission.
Which of the following statements accurately describes the function of the Session layer (layer 5) in the OSI model?
- The Session layer administers the process of establishing, managing, and terminating a dialog between client and server.
- The Session layer is used for character set conversion, such as between ASCII and Unicode.
- The Session layer is responsible for routing packets across different networks.
- The Session layer provides the physical transmission of data over network media.
The Session layer administers the process of establishing, managing, and terminating a dialog between client and server.
Match each networking function or device on the left with its associated OSI model layer on the right:
- Application layer: HTTP
- Presentation layer: Translates data
- Session layer: Session ID number
- Transport layer: Port number
- Network layer: Router
- Data Link layer: Switch
HTTP, Translates data, Session ID number, Port number, Router, Switch
A network engineer is designing a network in various offices to create multiple broadcast domains. Each has its own Virtual Local Area Network (VLAN). When configuring these multiple broadcast domains on the switch, the switch will be operating at what layer of the OSI model?
- Layer 2 (Data Link Layer)
- Layer 1 (Physical Layer)
- Layer 7 (Application Layer)
- Layer 4 (Transport Layer)
Layer 2 (Data Link Layer)
A freelance photographer is setting up a home office. They need to connect a desktop, a laptop, a network printer, and occasionally, guests’ devices to the Internet and each other for file sharing and printing. Which type of network is MOST suitable for this scenario?
- SOHO (Small Office/Home Office) Network
- PAN (Personal Area Network)
- CAN (Campus Area Network)
- MAN (Metropolitan Area Network)
SOHO (Small Office/Home Office) Network
Which of the following interfaces does a SOHO router provide at the Physical Layer of the OSI model? (Select three.)
- USB ports for direct computer connection
- Radio antennas for wireless signal transmission
- RJ-45 ports for a local cabled network
- HDMI ports for multimedia streaming
- VGA ports for video output
- WAN port for Internet Service Provider (ISP) connection
- SATA ports for internal storage connection
Radio antennas for wireless signal transmission, RJ-45 ports for a local cabled network, WAN port for Internet Service Provider (ISP) connection
