comptia netowork + Mike Myers chapter 1

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Questions and Answers

What distinguishes a workstation from a server?

Workstations are always connected to a network.

Workstations are used daily by end users. (correct)

Workstations are responsible for network maintenance.

Servers do not run multiple CPUs.

Which statement is true about client machines?

Client machines are more powerful than servers.

Client machines are always servers.

All workstations are client machines.

Client machines can request resources from servers or workstations. (correct)

What is a defining characteristic of servers?

They are used mainly by individual users.

They can only perform one task at a time.

They generally run specialized network operating systems. (correct)

They operate without any connection to a network.

Which statement describes the term 'host'?

A host is any device that takes an IP address. Signup and view all the answers

What is the advantage of dedicating a server to a single task?

It enhances performance by optimizing focus on one labor-intensive job. Signup and view all the answers

Which network topology consists of multiple interconnected devices, allowing for redundancy and decentralized management?

Mesh topology Signup and view all the answers

In a three-tier hierarchical model, which layer is responsible for connecting access layer devices to the core layer?

Distribution layer Signup and view all the answers

What type of traffic flow is characterized by data moving between servers and clients in the same data center?

East-west Signup and view all the answers

Which of the following network topologies is typically used in scenarios requiring centralized management?

Star topology Signup and view all the answers

In what network topology do devices communicate directly with each other without a centralized device?

Point to point Signup and view all the answers

What does a hybrid network topology combine?

Different topologies tailored for specific needs Signup and view all the answers

Which network type typically employs both Layer 2 and Layer 3 switches to manage data traffic effectively?

Spine and leaf Signup and view all the answers

Which term describes connections between different networks, such as a corporate network to the internet?

North-south traffic Signup and view all the answers

What is the primary function of binary code in communication between hosts?

To represent information using a sequence of 1s and 0s Signup and view all the answers

Which of the following best defines a local area network (LAN)?

A network limited to a specific geographic location Signup and view all the answers

Before technological advances, what was a significant limitation of LANs?

The distance between devices was highly restricted Signup and view all the answers

What is a workgroup in the context of local area networks?

A set of devices located in the same network segment Signup and view all the answers

How should a typical business arrange its LAN's workgroups for optimal administration?

By function or department divisions Signup and view all the answers

What is the primary role of connectivity devices like hubs and switches in a LAN?

To enable hosts to connect to each other and resources Signup and view all the answers

What does it imply when workgroups on a LAN do not have a security association?

They operate independently in terms of security policies Signup and view all the answers

Which of the following is true regarding the resources connected to a specific workgroup on a LAN?

All devices connected to the workgroup can access those resources Signup and view all the answers

What is a primary function of a router in a network?

To connect separate LANs and allow resource sharing Signup and view all the answers

What is the primary purpose of a LAN?

To connect a group of hosts within a localized area Signup and view all the answers

Why is it not practical to physically connect two workgroups without a router?

It would create a single large workgroup, hindering response times. Signup and view all the answers

Which topology is also referred to as a hub-and-spoke topology?

Star topology Signup and view all the answers

What advantages do smaller, individual workgroups provide?

Faster response times and easier administration Signup and view all the answers

Which statement accurately describes the role of hubs and switches compared to routers?

Hubs and switches connect devices within a single network, while routers connect different networks. Signup and view all the answers

What does the term 'collapsed core' refer to in network design?

A method to reduce costs by merging core and distribution layers Signup and view all the answers

What can be a consequence of larger workgroups accessing shared resources?

Slower response times due to high demand Signup and view all the answers

In networking, what does north-south traffic typically refer to?

Traffic that exits the network via routed connections Signup and view all the answers

How does a router improve network efficiency between two LANs?

By segmenting traffic to reduce congestion Signup and view all the answers

Which layer of the three-tier model provides the main data distribution functionality?

Distribution layer Signup and view all the answers

What is east-west traffic primarily concerned with?

Traffic residing within the immediate network between devices Signup and view all the answers

What is the disadvantage of combining two workgroups into one without a router?

Potential performance decline due to resource contention Signup and view all the answers

Which of the following statements about network devices is incorrect?

Hubs are smarter than switches in data management. Signup and view all the answers

What is a key characteristic of a full mesh network topology?

Each device is connected to every other device directly Signup and view all the answers

Which network type connects multiple LANs across large distances?

WAN Signup and view all the answers

What is one major disadvantage of ring topology?

It requires multiple cables to connect each computer. Signup and view all the answers

In what type of networking scenario is ring topology still found in use today?

Wide Area Networks (WANs) Signup and view all the answers

What characterizes a mesh topology?

Each device has a connection to every other device. Signup and view all the answers

Why is ring topology considered not fault-tolerant?

If one connection fails, all devices lose connectivity. Signup and view all the answers

What is one advantage of a hybrid mesh topology in WANs?

It enhances redundancy through multiple connections. Signup and view all the answers

Which statement about ring topology is true?

It is similar to bus topology in terms of connection requirements. Signup and view all the answers

What can complicate a mesh topology?

Excessive physical connections per device. Signup and view all the answers

What distinguishes a hybrid mesh topology from a full mesh topology?

A hybrid mesh includes connections between some but not all devices. Signup and view all the answers

Study Notes

Workstation vs. Server

Workstations are computers designed for individual use, typically with higher processing power and graphics capabilities than servers.
Servers are dedicated to providing resources and services to other computers on a network.

Client Machines

Client machines are devices that request services from servers.

Servers

Servers are designed primarily for sharing resources and services with other devices on a network.

Host

Host refers to a device that provides services or resources to other devices on a network.

Dedicating a Server to a Single Task

Dedicating a server to a single task enhances performance and resource utilization by eliminating potential contention for resources between multiple applications.

Network Topologies

Mesh is a network topology where each device is directly connected to every other device, allowing for high redundancy and decentralized management.

Three-Tier Hierarchical Model

In a three-tier hierarchical model, the distribution layer acts as a bridge between access layer devices and the core layer.

Traffic Flow Types

East-west traffic describes data flow between servers and clients located within the same data center.

Network Topology Characteristics

Star topology is commonly used when centralized management is required, with all devices connected to a central hub or switch.
Bus topology enables devices to directly communicate with each other without a centralized device, using a shared communication channel.
Hybrid network combines elements of different topologies to leverage their strengths and address specific needs.

LANs

Local Area Network (LAN) is a network that connects devices within a limited geographical area, like a building or office.
LANs are typically found in smaller areas like homes, offices, and schools, and provide a shared resource for connected devices.
Hubs and switches are connectivity devices that facilitate communication within a LAN, allowing devices to share data.
Workgroups are collections of devices on a LAN that share resources and can be managed independently.

Routers

Routers connect different networks and manage traffic between them, ensuring data is routed efficiently and securely.

Network Security

Workgroups on a LAN without a security association may be vulnerable to unauthorized access and data breaches.

Workgroup Resources

Resources connected to a specific workgroup on a LAN are typically accessible only to devices within that workgroup.

Networking Advantages and Disadvantages

Collapsed core refers to a simplified network design where the distribution and core layers are combined into a single layer.
Larger workgroups can experience increased contention for shared resources.
North-south traffic refers to communication between devices located on different networks.
Routers improve network efficiency between two LANs by directing traffic based on destination network, preventing congestion and improving overall performance.

Three-Tier Model and Traffic Flow

The distribution layer in a three-tier model handles the main data distribution functionality.
East-west traffic primarily involves communication within the same data center between servers and clients.
Merging two workgroups into one without a router can lead to security vulnerabilities and limited control over traffic between the workgroups.

Network Devices and Topologies

Full mesh topology features a dedicated connection between every device in the network, offering high resilience but requiring significant infrastructure and complexity.
WAN networks connect multiple LANs across large geographical distances.
Ring topology has devices interconnected in a closed loop, with data flowing in one direction.
Mesh topology, where each device has multiple connections to other devices, is commonly used in scenarios requiring high fault tolerance and redundancy.

Ring Topology Limitations and Applications

Ring topology is not fault-tolerant because a failure in one node can interrupt the entire network.
Ring topology is still used in niche applications like fiber channel networks for storage area networks (SANs).

Hybrid Mesh Topology Advantages

Hybrid mesh topology provides the redundancy and decentralized management of a full mesh topology with reduced infrastructure costs and complexity.

Mesh Topology Considerations

Mesh topology can be complex to configure and manage due to the numerous connections between devices.
Hybrid mesh topology differs from a full mesh topology by connecting devices partially through a central point, offering a balance between redundancy and infrastructure.

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