Network Ops

Question 1

Address Resolution Protocol (ARP)

Answer 1

A network protocol used to determine the MAC address of the next router or device on the path

PortNo: 219 TCP/UDP

Question 2

Cloud-based firewalls:

Answer 2

Software firewalls that are hosted by the cloud service provider

Question 3

Encapsulation:

Answer 3

A process performed by a VPN service that protects your data by wrapping sensitive data in other data packets

Question 3

Domain Name System (DNS)

Answer 3

A networking protocol that translates internet domain names into IP addresses PortNo. 53 TCP/UDP

Question 3

Firewall:

Answer 3

A network security device that monitors traffic to or from your network

Question 3

Controlled zone:

Answer 3

A subnet that protects the internal network from the uncontrolled zone

Question 4

Forward proxy server:

Answer 4

A server that regulates and restricts a person’s access to the internet

Question 5

Hypertext Transfer Protocol (HTTP):

Answer 5

An application layer protocol that provides a method of communication between clients and website servers

PortNo. 80

Question 6

Hypertext Transfer Protocol Secure (HTTPS)

Answer 6

A network protocol that provides a secure method of communication between clients and servers

PortNo: 443

Question 7

Network protocols:

Answer 7

A set of rules used by two or more devices on a network to describe the order of delivery of data and the structure of data

Question 7

IEEE 802.11 (Wi-Fi):

Answer 7

A set of standards that define communication for wireless LANs

Question 7

Network segmentation:

Answer 7

A security technique that divides the network into segments

Question 8

Port filtering:

Answer 8

A firewall function that blocks or allows certain port numbers to limit unwanted communication

Question 9

Proxy server:

Answer 9

A server that fulfills the requests of its clients by forwarding them to other servers

Question 10

Reverse proxy server:

Answer 10

A server that regulates and restricts the internet’s access to an internal server

Question 11

Secure File Transfer Protocol (SFTP)

Answer 11

A secure protocol used to transfer files from one device to another over a network

PortNo: 22

Question 12

Secure shell (SSH)

Answer 12

A security protocol used to create a shell with a remote system

PortNo: 22

Question 13

Security zone:

Answer 13

A segment of a company’s network that protects the internal network from the internet

Question 13

Simple Network Management Protocol (SNMP)

Answer 13

A network protocol used for monitoring and managing devices on a network

PortNo: 161&162

Question 13

Stateless:

Answer 13

A class of firewall that operates based on predefined rules and does not keep track of information from data packets

Question 14

Stateful:

Answer 14

A class of firewall that keeps track of information passing through it and proactively filters out threats

Question 15

Subnetting:

Answer 15

The subdivision of a network into logical groups called subnets

Question 16

Transmission Control Protocol (TCP)

Answer 16

An internet communication protocol that allows two devices to form a connection and stream data

Question 16

Uncontrolled zone:

Answer 16

he portion of the network outside the organization

Question 17

Virtual private network (VPN):

Answer 17

A network security service that changes your public IP address and masks your virtual location so that you can keep your data private when you are using a public network like the internet

Question 18

Wi-Fi Protected Access (WPA):

Answer 18

A wireless security protocol for devices to connect to the internet