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Network Fundamentals > Ch 7 > Flashcards

Ch 7 Flashcards

1
Q

Basil Telecommunications have hired you as a network manager for providing a network system that will include redundant processors, backup generators, and earthquake-resilient installation. You have decided that the average downtime per year cannot be more than 5 minutes 15 seconds. Which of the following will you use in this scenario?

A

Five 9s = 99.999%

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2
Q

James has been appointed as the service manager in one of the outlets for Grason Communication, which sells switches and routers. A client approaches James with a query from a network provider who is requesting for an alternative router that is less expensive and will work within layer 5 and layer 7 in the OSI (open systems interconnection) model. Analyze which of the following options James should present to his client in this scenario.

A

Layer 4 Switches

is a switch capable of interpreting layer 4 data, which means it can perform advanced filtering, keep statistics, and provide security functions.

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3
Q

As a network administrator of your company, you have decided to implement redundant connections between network devices to solve problems like network bottlenecks. You have decided to implement this change so that multiple network interfaces and ports can act as one logical interface and focus on increasing total throughput and better load balancing. Which of the following will you use to implement this change in your Windows devices?

A

NIC Teaming

is the seamless combination of multiple network interfaces or ports on Windows devices to act as one logical interface.

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4
Q

You have been working as the network administrator for JP Steels. In order to cut down on operating costs, you plan to install a firewall’s OS (operating system) in a VM on an inexpensive server, instead of purchasing an expensive hardware firewall to protect a LAN. Hence, you no longer require a firewall that runs on its own OS. Which of the following firewalls will you purchase in this scenario?

A

BARRACUDA’S CLOUDGEN Firewall Device

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5
Q

As a network administrator, you want to modernize your network with modular software running on standard server platforms. You want to start by replacing traditional, custom-designed network equipment. You also wish to have flexible, cost-saving options for many types of network devices, including virtual servers, data storage, load balancers, and firewalls. Which of the following will you use in such a scenario?

A

NFV (Network Functions Virtualization)

is a network architecture that merges physical and virtual network devices.

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6
Q

Which of the following is a multipath link-state protocol?

A

TRILL (Transparent Interconnection of Lots of Links)

is a multipath, link-state protocol developed by IETF. TRILL is newer technology to improve on or replace STP.

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6
Q

You have been working with an ISP (Internet service provider) as a network engineer. You have made multiple WAN (wide area network) connections over a period of time. Recently, you have received complaints from various clients about network failure, which is having an effect on their day-to-day business. This network failure is primarily caused by some bugs in a few of the network devices. In order to protect your clientele, you have decided to provide an additional information sheet that will specifically state the amount of time you will take to fix the issue. Which of the following will you use to calculate the average amount of time required to repair the faulty device?

A

MTTR (Mean Time to Repair)

is the average amount of time required to repair a device or restore a service.

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7
Q

Ross is running a small data entry back office, for which he has contracted you for network management. Ross has made it very clear that because he has just started the company he wants to cut down on expenses wherever he can. One such option involves the router-he wants to exchange the router with a similar but less expensive alternative. Which of the following will you refer to Ross in such a situation?

A

Layer 3 Switch

is a switch capable of interpreting layer 3 data and works much like a router in that it supports the same routing in that it supports the same routing protocols and makes routing decisions.

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8
Q

Cloud computing offers many significant advantages and opportunities for expansion, but it has its disadvantages as well. Which of the following options is the cheapest and simplest alternative to a cloud?

A

Internet

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9
Q

Which of the following switches can be configured via a command-line interface or a web-based management GUI (graphical user interface)?

A

Managed Switch

is a switch that can be configured via a command-line interface or a web-based management GUI, and sometimes can by configured in groups.

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10
Q

For over a decade, Ramanathan has been working as a network engineer in an MNC that uses FC (Fibre Channel) networking architecture. His primary duty is to ensure that there are no issues in the network connections between servers and SAN (storage area network) devices, so that maximum throughput is achieved at all times. Recently, one of the connections of the FC device to the network malfunctioned, which Ramanathan has to fix. Analyze which of the following Ramanathan should do in this scenario.

A

Connect the FC devices to the network through HBAs

FC (Fibre Channel)

HBA (Host Bus Adapters)

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10
Q

Which of the following protocols allows a pool of computers or interfaces to share one or more IP addresses?

A

CARP (Common Address Redundancy Protocol)

is a protocol that allows a pool of computers or interfaces to share one or more IP addresses.

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11
Q

Which cloud characteristic allows a provider to limit or charge by the amount of bandwidth, processing power, storage space, or client connections available to customers?

A

Measured Service

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12
Q

Which of the following terms refers to the technique of grouping redundant resources such as servers so they appear as a single device to the rest of the network?

A

Automatic Failover

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13
Q

Which of the following will help evenly distribute traffic to each device in a cluster so every device carries a portion of the load?Which of the following will help evenly distribute traffic to each device in a cluster so every device carries a portion of the load?

A

Load Balancer

is a device that distributes traffic intelligently among mutiple devices or connections.

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14
Q

Jasper Infotech have an issue with their network system-a malfunctioning NIC on a router caused network outages. They have hired you specifically to ensure that the network system does not collapse when there is an unexpected hardware or software malfunction. Which of the following terms will you refer to while fixing this issue for Jasper Infotech?

A

Fault Tolerance

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15
Q

You are working as one of the network administrators of Wells & Welsh Associates. The company wants to provide network administrators with more centralized control of network settings and management. For this reason, the department has decided to use an SDN (software-defined networking) controller to allow network administrators to remotely manage network devices and monitor data collected about these devices. Which plane of the SDN will enable you to allow such a feature?

A

The Management Plane

16
Q

Which of the following protocols can detect and correct link failures in milliseconds?

A

RSTP (Rapid Spanning Tree Protocol)

is newer technology to improve on or replace STP. Defined in IEEE’s 802.1w standard, and MSTP (Multiple Spanning Tree Protocol), originally defined by the 802.1s standard.RSTP (Rapid Spanning Tree Protocol)

17
Q

Which of the following is a distinct network of storage devices that communicate directly with each other and with other portions of the network?

A

A SAN

18
Q

Valentina is employed under the network management team at Iris Global Services, which is a software management firm. Following a recent hacking attempt at its office, the network administrator wants her to cross-check whether security precautions have been enabled on the STP interfaces so that the information transmitted by the BPDUs can be protected. On inspection, she discovers that the security precautions have not been configured. Analyze what Valentina should do in order to prevent a rogue switch or computer connected to one of these ports from hijacking the network’s STP paths.

A

Use a BPDU Guard to Block BPDUs

(Bridge Protocol Data Units)

19
Q

Glenn, who is working as a network engineer, has been instructed to automate many tasks to work together in a complex and lengthy workflow. What is the term for this process?

A

Orchestration

19
Q

You have been hired as an assistant to the head network administrator in an ISP (Internet service provider). While setting up the network for one of your clients, he wants you to check whether sufficient security precautions have been taken to ensure none of the customer’s switches becomes the ISP’s root bridge. Which of the following will you use in this scenario to ensure that the appropriate security measures have been taken?

A

Root Guard

prevents switches beyond the configured port from becoming the root bridge.

20
Q

You run a website called Offhand that sells exclusive handmade home decor items. On Mother’s Day, the website unexpectedly receives a burst of traffic following the marketing campaign designed for this occasion. Thankfully, you are equipped with a good cloud service model and hence you are able to increase the cloud resources the website needs without disrupting your web services. Which of the following cloud characteristics helped you manage the situation easily?

A

Rapid Elasticity

21
Q

Which of the following cloud models makes resources available to users through a WAN connection?

A

Private Cloud

22
Q

You have been working as a network administrator at Yong Solutions, which is an ISP (Internet service provider). The switches used in the storage network of the ISP essentially use the STP (Spanning Tree Protocol) for detecting link failures. You have been asked to upgrade the STP because repeated reports of network transmissions being bogged down have been received. Which of the following will you use in this scenario?

A

SPB (Shortest Path Bridging)

is a descendent of STP and is defined in IEEE’s 802.1aq standard. SPB differs from earlier iterations of STP in that it keeps all potential paths active while managing the flow of data across those paths to prevent loops. By utilizing all network paths, SPB greatly improves network performance. Protocols designed to replace STP, such as SPB, operate at layer 3 instead of or in addition to layer 2.

23
Q

The Centre for Equity Studies is a not-for-profit organization in Staten Island, New York, working in the human rights sector. Currently, because of the pandemic, the employees work from home. They work in association with three other initiatives, all of them involved in the same sector. Hence, there are a lot of resources that are routinely shared among all of them but not with the general public. You have been assigned the task of selecting one cloud model, keeping in mind the working conditions and the requirements of the users. Which of the following would suit this organization the most?

A

A Community Cloud

24
Q

As a network administrator of Wheeling Communications, you have to ensure that the switches used in the organization are secured and there is trusted access to the entire network. In order to maintain this security standard, you have decided to disable all the unused physical and virtual ports on your Huawei switches. Which of the following commands will you use to bring your plan to action?

A

Shutdown

25
Q

Lewis has been hired as an assistant to the head network administrator. He needs to understand the basic functioning of certain STP (Spanning Tree Protocol) features that will block BPDUs (Bridge Protocol Data Units) on any port serving network hosts. Which of the following will he use for such purposes?

A

BPDU Guard (Bridge Protocol Data Units)

26
Q

You, as a network administrator, plan on running a trial for a beta version of an application. The idea is to install the application on a guest machine. You plan on doing this because you would rather have the untested software cause errors on the guest machine than on the host. Which of the following will you use in this instance?

A

VirtualBox

In VMware and VirtualBox, you can choose the bridged connection type when you create or configure the virtual adapter. In KVM, you create a bridge between the VM and your physical NIC when you modify the vNIC’s settings. In Hyper-V, you create a bridged connection type by assigning VMs to an external network switch.

27
Q

In which of the following modes will a vNIC access a physical network using the host machine’s NIC?

A

Bridged Mode

is a type of network connection in which a vNIC accesses a physical network using the host machine’s NIC. The bridged vNIC obtains its own IP address, default gateway, and subnet mask information from the physical LAN’s DHCP server.

28
Q

Which of the following creates and manages a VM (virtual machine) and allocates hardware resources for the host and any of its guest VMs?

A

Hypervisor

is the element of virtualization software that manages multiple guest machines and their connections to the host (and by association, to a physical network).

29
Q

Krypton Spares and Parts is an MNC dealing in motorcycle spare parts. The administration department of the company has constantly been complaining of severe network issues, and you have been hired to fix the issues. On inspection, it has come to your notice that these network fluctuations are primarily because of flooding attacks from broadcast and multicast traffic. Which of the following do you plan on using to fix this issue?

A

Storm Control

30
Q

As a developer, you need frequent access to multiple platforms during the development process. Rather than purchasing and maintaining a separate device for each platform, you have decided to avail the cloud service option. You are looking to build and test the applications within these virtual, online environments, which are tailored to the specific needs of the project. The cloud service model should have servers that provide only the resources needed to run an application and also allow customers to run their code directly in the cloud without having to manage a server environment at all. Which of the following cloud service models do you think would be appropriate considering your requirements?

A

PaaS (Platform as a Service)

is a cloud service model in which various platforms are provided virtually, enabling developers to build and test applications within virtual, online environments tailored to the specific needs of a project.

31
Q

In order to achieve the utmost fault tolerance, as a network administrator, you want to ensure that critical devices are all equipped with redundant NICs, routers, and processors, which are able to immediately assume the duties of an identical component in case one of the components fails. Which of the following will help you ensure these devices contain the necessary components you require?

A

Automatic Failover

in the event of a component failure, the ability of a redundant component to immediately assume the duties of the failed component.

32
Q

Which of the following planes is made up of the physical or virtual devices that receive and send network messages on their way to their destinations?

A

The Infrastructure Plane

an SDN (Software-Defined Networking) construct made up of physical or virtual devices that receive and send network messages. Also called Data Plane.

33
Q

Blue Whale is an e-commerce website that has hired you as part of the network management team. The network administrator has delegated one of his tasks to you, which requires you to allow and configure more than one MAC address in one of the ports. Which of the following commands will help you complete the task at hand?

A

allowed-mac

34
Q

Which of the following network technologies uses a transport layer protocol that runs on top of TCP to allow fast transmissions over LANs, WANs, and the Internet?

A

iSCSI (Internet SCSI)

is a transport layer protocol used by SANs that runs on top of TCP to allow fast transmission over LANs, WANs, and the Internet.

35
Q

Scott & Wayne Law Associates is a private law firm in Atlanta specializing in cases involving violation of environmental laws. The firm currently has approximately 50 employees who all work on various matters and in different departments. You have been hired as a network administrator and tasked with finding a suitable cloud model for the firm. The firm is looking for a comparatively low-cost cloud model that can be accessed only by the employees and senior management but not its clients or third parties. Which of the following cloud models would you choose?

A

A Private Cloud

36
Q

What is the downtime per day for a system showing 99.9% availability?

A

1 Minute & 26 Seconds

37
Q

You already have a running network in your organization, but because of the recent influx of network traffic and as a network engineer, you want to take a more organized approach in designing the network so that every device can function optimally. You have decided to add highly efficient multilayer switches to pass traffic in and out of a few backbone ports as quickly as possible. Which of the following layers of the network architecture will you use to bring in this change to your network?

A

The Core Layer

Network Fundamentals (17 decks)

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