Module 7. Network Architecture
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
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 private cloud
Which of the following protocols allows a pool of computers or interfaces to share one or more IP addresses?
CARP
Which of the following creates and manages a VM (virtual machine) and allocates hardware resources for the host and any of its guest VMs?
Hypervisor
Which device can manage traffic to multiple servers in a cluster so all servers equally share the traffic?
Load balancer
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?
NFV
Which cloud management technique executes a series of tasks in a workflow?
Orchestration
Which of the following protocols can detect and correct link failures in milliseconds?
RSTP
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?
SPB
Which of the following features of a network connection between a switch and server is not improved by link aggregation?
Speed
Which of the following is a multipath link-state protocol?
TRILL
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?
The infrastructure plane
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?
iSCSI
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 community cloud
When shopping for a new router, what does the MTBF tell you?
How long devices like this one will last on average until the next failure
What software allows you to define VMs and manage resource allocation and sharing among VMs on a host computer?
Hypervisor
What information does the switchport port-security command use to restrict access to a switch's interface?
MAC address
With which network connection type does the VM obtain IP addressing information from its host?
NAT mode
Which cloud service model gives software developers access to multiple platforms for testing code?
PaaS
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?
Storm control
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?
The management plane
Which type of switch connects all devices in a rack to the rest of the network?
ToR switch
What virtual, logically defined device operates primarily at the data link layer to pass frames between nodes?
Virtual switch
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?
allowed-mac
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?
shutdown