IT Infrastructure & Networking Flashcards

A network administrator needs to prevent specific IP ranges from accessing a server. Which tool is most appropriate?

Answer: Access Control List (ACL)

Access Control Lists (ACLs) filter traffic based on IP addresses, ports, and protocols to permit or deny access.

What type of cable is required to directly connect two computers without a switch?

Answer: Crossover cable

A crossover cable swaps transmit and receive pairs, allowing two similar devices to communicate directly.

Which cloud deployment model is used exclusively by a single organization?

Answer: Private cloud

A private cloud is provisioned for exclusive use by a single organization, either on-premises or hosted by a provider.

What does the 'last mile' refer to in telecommunications infrastructure?

Answer: The connection between the ISP's central office and the customer premises

The 'last mile' describes the final leg of the telecommunications network delivering connectivity from the provider's facility to the end user.

Which virtualization component abstracts physical hardware resources and allocates them to virtual machines?

Answer: Hypervisor

A hypervisor (Type 1 or Type 2) manages and allocates physical hardware resources among multiple virtual machines.

What is the purpose of Spanning Tree Protocol (STP) in a switched network?

Answer: To prevent switching loops by blocking redundant paths

STP prevents broadcast storms by detecting and blocking redundant paths that would create loops in a switched network.

A company experiences a power outage. Which device provides immediate short-term power to critical servers?

Answer: UPS (Uninterruptible Power Supply)

A UPS uses batteries to supply immediate power during an outage, giving time for graceful shutdown or generator startup.