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Zorluk: OrtaResilience, High Availability, and Redundancy

A system administrator is tasked with improving server network availability for a critical database host. The host currently has a single network cable connected to a core switch, creating a single point of failure if the switch port or cable fails. The administrator installs a second network interface card (NIC) and connects it to a separate switch. Which of the following should the administrator configure on the server operating system to combine these adapters into a fault-tolerant network connection?

  1. NIC teamingCevap
  2. B
    RAID 1 array
  3. C
    Multipath I/O
  4. D
    Cold site replication

Cevap

NIC teaming should be configured to group physical network cards into a single redundant interface.
NIC teaming allows multiple physical network interfaces on a host to function as a single logical network interface. In the event of a cable, port, or NIC hardware failure, network traffic automatically routes through the surviving adapter, maintaining high availability without interruption.

Adım Adım Çözüm

1
Identify the availability requirement in the scenario.
The requirement is local server network interface fault tolerance to eliminate single points of failure at the cable, port, or NIC level.
Connecting multiple NICs to separate switches requires OS-level bonding/teaming to manage active-passive or active-active traffic failover.
2
Evaluate the technology that binds network adapters for fault tolerance.
NIC teaming (also known as bond interface or IEEE 802.3ad link aggregation depending on implementation) groups multiple adapters into a virtual interface.
If one physical link loses connectivity, traffic seamlessly shifts to the remaining adapter without dropping active network sessions.
3
Differentiate network interface redundancy from storage or disaster recovery controls.
RAID protects storage disks, MPIO manages SAN storage connections, and cold sites deal with facility recovery.
Selecting NIC teaming specifically addresses the host network adapter and switch connection layer.

Anahtar Kavram

NIC Teaming and Link Redundancy
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Konular

Resilience, High Availability, and Redundancy

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