Quiz 18B: Explain High Availability Concepts

What does multipathing refer to in networking?

• Combining multiple network links into a single logical channel

• Using multiple physical links between network nodes

• Load balancing between servers in a farm or pool

• Redundant processing nodes sharing data with each other

In which scenarios is multipathing commonly used?

• Load balancing and fault tolerance

• Connecting servers to storage area networks (SANs) and using multiple ISPs

• Link aggregation and NIC teaming

• Layer 4 and Layer 7 switching

What is the purpose of link aggregation?

• Combining multiple network links into a single logical channel

• Load balancing between servers in a farm or pool

• Reducing bottlenecks in network traffic

• Providing redundancy by distributing client requests

What is NIC teaming?

• Combining multiple network links into a single logical channel

• Load balancing between servers in a farm or pool

• Redundant processing nodes sharing data with each other

• Creating a channel link from multiple network ports to a switch

What is the IEEE standard typically used for implementing link aggregation?

• 802.11ac

• 802.1x

• 802.3ad/802.1ax

• 802.15.4

What is the primary purpose of load balancers in networking?

• Combining multiple network links into a single logical channel

• Providing redundancy by distributing client requests

• Reducing bottlenecks in network traffic

• Creating a channel link from multiple network ports to a switch

What types of servers can benefit from using load balancers?

• Print servers

• Database servers

• Web servers

• DNS servers

What distinguishes a Layer 7 switch from a Layer 4 switch?

• Layer 7 switches work at the application layer, while Layer 4 switches work at the transport layer.

• Layer 7 switches use IP addresses for forwarding decisions, while Layer 4 switches use MAC addresses.

• Layer 7 switches are used for load balancing, while Layer 4 switches are used for link aggregation.

• Layer 7 switches have more ports than Layer 4 switches.

What is the main advantage of an active-active cluster configuration?

• Lower hardware and operating system costs

• Immediate failover in case of node failure

• Simplicity in configuration and management

• Maximum utilization of available hardware capacity

Which protocol allows multiple physical routers to serve as a single default gateway for a subnet?

• Virtual Router Redundancy Protocol (VRRP)

• Hot Standby Router Protocol (HSRP)

• Common Address Redundancy Protocol (CARP)

• Gateway Load Balancing Protocol (GLBP)