chapter 7 quiz Computer Networks

What is the word used to describe the ability to quickly adapt to market demands according to increased or decreased feature use within a system?

agility

What is the term used to describe when something does not work as promised or as planned?

failure

Clustering is the process of grouping similar resources together. What resources can be clustered? Choose all that apply.
Servers
Routers
Applications
Personal Computers

Servers
Routers
Applications

What is the software that creates and manages a virtual machine (VM) and allocates the use of hardware resources for the host and any of its guest VMs?

hypervisor

What are some advantages of virtualization? Choose all that apply.
efficient use of resources
licensing costs
cost and energy savings
fault and threat isolation

efficient use of resources
cost and energy savings
fault and threat isolation

What is the first layer of defense to prevent a MAC flooding attack? Choose all that apply.
disable physical ports
disable virtual ports
disable ephemeral ports
disable WAN port

disable physical ports
disable virtual ports

Orchestration is the automation of tasks to work together in a complex and lengthy workflow.

True

Cloud architecture provides different service model functions that can be customized to fit a client's needs, such as monitoring, storage, applications, and virtual desktops. What is that as a Service function called?

XaaS (Anything as a Service)

In which service mode are hardware resources provided virtually, including network infrastructure devices such as routing, switching, and DNS services?

IaaS (Infrastructure as a Service)

Hazel wants a switch to enhance her firewall's capabilities. The switch should provide advanced filtering and security functions. What type of switch matches those specifications?

layer 4 switch

Minor faults, such as a malfunctioning network interface card (NIC) on a router, can result in network outages.

True

Which device can be configured via a command-line interface or web-based management GUI (graphical user interface), and can sometimes be configured in groups?

managed switch

What type of pipeline specifically supports the continuous development of an application through the many iterations of improvements?

software pipeline

A key factor in maintaining the availability of network resources is fault tolerance. What is fault tolerance? Choose all that apply.

the capacity of a system to continue performing despite an unexpected hardware or software malfunction

the process of duplicating critical network components, such as servers or storage devices, to ensure redundancy and minimize the risk of data loss

What cloud services can be shared between multiple organizations, but are not available to the public?

community cloud

Jessie was a system administrator at a large company's Network Operations Center (NOC). Occasionally, employees company-wide would complain about the slow Internet service or that it was temporarily unavailable. As the complaints were widespread and the issue wasn't localized, Jessie investigated the problem at the NOC level. They determined that a router was causing the issue. From a fault tolerance perspective, what would this issue be considered?

fault

What is the command for disabling a port on a Cisco switch?

shutdown

What does the term HA (high availability) refer to?

a system that functions reliably nearly all the time

Emie is the owner of an e-commerce company that is experiencing rapid growth. Her company has recently launched a website that is managed by racks of servers. These servers are responsible for a variety of tasks, including taking orders, processing payments, issuing refunds, and updating the website's content on a daily basis. When a client types in the website URL, they are directed to the website. From the client's perspective, it appears that the website is powered by a single server. However, in reality, there are multiple servers working together to ensure that the website functions smoothly. How does this process happen? Choose all that apply.

the client gets to choose which server they work with
web client directs request to a single VIP (virtual IP address
racks of servers are clustered to look like one server
load balancing directs traffic evenly between the servers

Racks of servers are clustered to look like one server.
Load balancing directs traffic evenly between the servers

In what type of situation is the round-robin rule algorithm used?

load balancing

Each leaf switch is connected to every spine switch; therefore, messages must traverse fewer hops to reach their destination. What does it mean when messages need fewer hops to reach their destination?

a decrease in latency

This plane is not a typical layer for network communication, but it is considered a part of the control plane. Its purpose is to enable network administrators to remotely manage network devices, monitor them, and analyze data collected about the devices. What is this plane called in other contexts?

management plane

The overall network design, the devices involved, how they're configured, the services implemented to support the network, and the way that devices are connected to the network are called a network's architecture.

true

Juan's company uses the hierarchical three-tiered network architecture approach developed by Cisco and other manufacturers. Juan is currently in the process of purchasing switches to connect directly to hosts, including servers, printers, and workstations. What type of switches are these? Choose all that apply.

distribution layer
access layer
edge layer
core layer

access layer
edge layer

What is EoR (end of row) switching, and what are some of its benefits? Choose all that apply.

EoR switching places several leaf switches in a rack at the beginning of each row of racks or at the end of each row.

This approach requires fewer switches (and, therefore, fewer hops for much of the network's traffic) and less rack space.

What is ToR (top of rack) switching, and what are some of its benefits? Choose all that apply.

The ToR switches connect all other devices in the rack to the rest of the network.

Their location in the rack often provides the best accessibility and cable management.

What is the benefit of keeping the bulk of a network's cabling within the rack for very short connections? Choose all that apply.

- Network requires less cable overall

- Very high speed cable can make very short cable runs

- Provides increased flexibility in the network design

Angela has eight operating systems she wants to run, but she does not have the hardware to support each of them. However, she has an older Windows computer with virtualization capabilities. The computer she has consists of 16 Gb of RAM, a 100 Gb hard drive, an on-board video card, and all other hardware is standard to a home PC. What issues might she face as she tries to install these operating systems? Choose all that apply.

- the hypervisor may not support all guest operating systems

- not enough host system resources

Mackie plans to set up a test network that will incorporate all the operating systems used by his company. He wants to ensure that any actions taken on this network will not affect the production network in any way. What should Mackie do?

create a virtual network and set it to host-only mode

In what cloud deployment are services established on an organization's own servers in its own data center, or services are established remotely for a single organization's private use and made available to authorized users over a WAN connection through some type of remote access?

private cloud

Software-defined networking (SDN) is a centralized approach to networking that removes most of the decision-making power from network devices. At what level is this responsibility handled?

software level

To which standard does Link Aggregation Control Protocol (LACP) now belong?

802.1ax

Virtualization is an actual, or logical, version of something rather than the physical version.

False

In the world of networking, what does the term "availability" mean?

how consistently and reliably a resource can be accessed by authorized personnel

During software development, developers often need to access multiple platforms, which include the operating system, the runtime libraries or modules provided by the OS to applications, as well as the hardware on which the OS runs. Which service model would be the better option?

PaaS (Platform as a Service)

What status listed below indicates that a switch port is down? Choose all that apply.

- error disabled

- suspended

- administratively down

Software-defined networking (SDN) enables automatic network configuration based on changing conditions and application requirements. What is this capability called?

application aware networking

While a developer writes changes to the code, the changes can be uploaded into the branch that the developer is working on. What is the process of uploading these changes called?

commit

A large e-commerce company had a server go down. It was an important server that processes orders. The company has load balancing in place and clustered its servers together. What happened when that server when down?

no major impact

One way to consider availability is by measuring a system's or network's uptime, which is the duration or percentage of time that it functions normally between failures. What is the system downtime per year if the uptime is 99.99%?

52 minutes, 35 seconds