Network Basics
Protocols
OSI Model
IP Addressing
Cloud and Virtualization
100

What is the purpose of Classless Inter-Domain Routing (CIDR) notation?

To allow for more flexible subnetting

100

What protocol uses port 22?

  • SSH (Secure Shell).
100

Which layer of the OSI model is responsible for physical addressing?

  • The Data Link Layer is responsible for physical addressing.
100

What is a private IP address range?

Private IP address ranges are reserved for use within private networks and include 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255

100

What are 4 cloud service models?

  • SaaS (Software as a Service): Software applications are delivered over the internet on a subscription basis.
  • IaaS (Infrastructure as a Service): Provides virtualized computing resources over the internet.
  • PaaS (Platform as a Service): Provides a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure.
  • DaaS (Desktop as a Service): Delivers virtual desktops to end-users over the internet.
200

What is the purpose of DHCP?

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and other network configuration parameters to devices on a network, allowing them to communicate effectively.

200

Which protocol sends email?

  • SMTP (Simple Mail Transfer Protocol).
200

At which OSI layer does IP operate?

  • IP operates at the Network Layer.
200

What is NAT?

  • NAT (Network Address Translation) is a method used to remap one IP address space into another by modifying network address information in the IP header of packets while they are in transit.
200

What is one connectivity option for cloud services?

  • Public Internet: Accessing cloud services over the public internet.
  • VPN (Virtual Private Network): Securely connecting to cloud services over the internet.
  • Direct Connect: Dedicated network connections to cloud providers for higher bandwidth and lower latency.
  • Interconnect: Using a third-party network provider to connect to cloud services.
300

What is the function of DNS?

DNS (Domain Name System) translates domain names into IP addresses, enabling users to access websites using human-readable names.

300

What protocol uses port 80?

  • HTTP (Hypertext Transfer Protocol).
300

Which OSI layer is responsible for establishing, managing, and terminating sessions?

  • The Session Layer is responsible for establishing, managing, and terminating sessions.
300

What is an IPv4 address class?

  • IPv4 address classes are categories of IP addresses based on their leading bits, which determine the network and host portions of the address. The main classes are A, B, C, D, and E.
300

What is Multitenancy?

  • Multiple customers share the same physical infrastructure while keeping their data isolated.
400

What is a Virtual IP?

  • A Virtual IP (VIP) is an IP address that is not tied to a specific physical network interface and can be used for load balancing and failover.
400

What is the purpose of ICMP?

  • ICMP (Internet Control Message Protocol) is used for diagnostic and error-reporting purposes in network communications.
400

Which layer of the OSI model provides network services to applications?

  • The Application Layer provides network services to applications.
400

What is the difference between IPv4 and IPv6?

  • IPv4 uses 32-bit addresses, allowing for about 4.3 billion unique addresses, while IPv6 uses 128-bit addresses, allowing for a vastly larger number of unique addresses. IPv6 also includes improvements such as simplified header format and better support for extensions and options.
400

Which IP address is used for loopback testing?

  • 127.0.0.1
500

What is the purpose of APIPA?

  • APIPA (Automatic Private IP Addressing) allows a device to automatically assign itself an IP address from the range 169.254.0.1 to 169.254.255.254 when a DHCP server is not available.
500

What is the primary function of a remote desktop protocol?

  • The primary function of a remote desktop protocol, such as RDP (Remote Desktop Protocol), is to provide remote access to a desktop or application over a network.
500

What is the correct order of data encapsulation in the OSI model?

  • The correct order of data encapsulation is: Application, Presentation, Session, Transport, Network, Data Link, Physical.
500

What is an IPv6 multicast address?

  • An IPv6 multicast address is used to send a single packet to multiple destinations. It starts with the prefix FF00::/8.


500

What is the purpose of a patch panel in cable management?

  • To organize and manage cable connections
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