Definitions

Question 1

1.1.1 Reliable Networks - Fault Tolerance

Answer 1

1.1.1 - A fault tolerant network is one that limits the number of affected devices during a failure. Having multiple paths to a destination is known as redundancy.

Question 2

1.1.2 Reliable Networks - Scalability

Answer 2

1.1.2 - A scalable network expands quickly to support new users and applications. Networks are scalable because the designers follow accepted standards and protocols.

Question 3

1.1.3 Reliable Networks - Quality of Service

Answer 3

1.1.3 - QoS is a primary mechanism for managing congestion and ensuring reliable delivery of content to all users.

Question 4

1.1.4 Reliable Networks - Security

Answer 4

1.1.4 - Network administrators must address two types of network security concerns: network infrastructure security and information security. To achieve the goals of network security, there are three primary requirements: Confidentiality, Integrity, and Availability.

Question 5

1.2.1 Network Trends - BYOD

Answer 5

1.2.1 - BYOD means any device, with any ownership, used anywhere.

Question 6

1.2.2 Network Trends - Online Collaboration

Answer 6

1.2.2 - Collaboration tools, like Cisco WebEx give employees, students, teachers, customers, and partners a way to instantly connect, interact, and achieve their objectives.

Question 7

1.2.3 Network Trends - Video Communication

Answer 7

1.2.3 - Video calls are made to and from anyone with an internet connection, regardless of where they are located.

Question 8

1.2.4 Network Trends - Cloud Computing

Answer 8

1.2.4 - Cloud computing allows us to store personal files, even backup an entire drive on servers over the internet. Applications such as word processing and photo editing can be accessed using the cloud. There are four primary types of Clouds: Public Clouds, Private Clouds, Hybrid Clouds, and Custom Clouds.

Question 9

1.2.5 Network Trends - Smart Home Technology

Answer 9

1.2.5 - Smart home technology integrates into every-day appliances, which can then connect with other devices to make the appliances more ‘smart’ or automated.

Question 10

1.3.1 Common external threats to networks - Viruses, worms, and Trojan horses

Answer 10

1.3.1 - These contain malicious software or code running on a user device.

Question 11

1.3.2 Common external threats to networks - Spyware and adware

Answer 11

1.3.2 - These are types of software which are installed on a user’s device. The software then secretly collects information about the user.

Question 12

1.3.3 Common external threats to networks - Zero-day attacks

Answer 12

1.3.3 - Also called zero-hour attacks, these occur on the first day that a vulnerability becomes known.

Question 13

1.3.4 Common external threats to networks - Threat actor attacks

Answer 13

1.3.4 - A malicious person attacks user devices or network resources.

Question 14

1.3.5 Common external threats to networks - Denial of service (DoS) attacks

Answer 14

1.3.5 - These attacks slow or crash applications and processes on a network device.

Question 15

1.3.6 Common external threats to networks - Data interception and theft

Answer 15

1.3.6 - This attack captures private information from an organization’s network.

Question 16

1.3.7 Common external threats to networks - Identity theft

Answer 16

1.3.7 - This attack steals the login credentials of a user in order to access private data.

Question 17

1.4.1 Larger networks and corporate networks Security measures - Dedicated firewall systems

Answer 17

1.4.1 - Dedicated firewall systems provide more advanced firewall capabilities that can filter large amounts of traffic with more granularity.

Question 18

1.4.2 Larger networks and corporate networks Security measures - Access control lists (ACL)

Answer 18

1.4.2 - Access control lists (ACL) further filters access and traffic forwarding based on IP addresses and applications.

Question 19

1.4.3 Larger networks and corporate networks Security measures - Intrusion prevention systems (IPS)

Answer 19

1.4.3 - Intrusion prevention systems (IPS) identify fast-spreading threats, such as zero-day or zero-hour attacks.

Question 20

1.4.4 Larger networks and corporate networks Security measures - Virtual private networks (VPN)

Answer 20

1.4.4 - Virtual private networks (VPN) provide secure access into an organization for remote workers.

Question 21

2.1.1 Shell

Answer 21

2.1.1 - A user interface that allows users to request specific tasks from the computer. These requests can be made either through the CLI or GUI interfaces.

Question 22

2.1.2 Kernel

Answer 22

2.1.2 - Communicates between the hardware and software of a computer and manages how resources are used to meet software requirements

Question 23

2.1.3 Hardware

Answer 23

2.1.3 - The physical part of a computer including underlying electronics