Networking v6 Ch 14 Quiz Review

​ (a)   is a set of mechanisms that try to guarantee timely delivery or minimal delay of important or time-sensitive communications.

• Quality of Service (QoS)
• Load balancing
• NIC teaming
• Differentiated Services (Diffserv)

Answer explanation

This is a subnetwork placed between the LAN and untrusted networks, such as the internet. External network nodes can access only what you choose to expose in the screened subnet. The rest of the network is protected by firewalls. It was previously known as a demilitarized zone (DMZ).

• Screened subnet

• VLAN

• Spanning tree

• Traffic shaper

Answer explanation

Screened subnet (also known as a screened subnet gateway) architecture includes two screened host gateway devices that isolate the LAN from the Internet, creating what is known as a screened subnet, or DMZ, between them.

The architecture also includes a proxy server (bastion host).

What is NOT a goal of network optimization?

• Fault tolerance

• High availability

• Uptime

• Monetization

Answer explanation

Improving response time and performance is another goal.

​ (a)   might lead to out of date information.

• Caching
• Port aggregation
• Quality of Service (QoS)
• Load balancing

Answer explanation

(a)   allows a switch to maintain multiple paths between switches within a subnet. It runs on each switch and is used to select a single path between any two switches

• Spanning tree
• NIC teaming
• Load balancing
• Port aggregation

Answer explanation

This logically groups two or more physical connections to the same network. Data is divided and sent on multiple interfaces, effectively increasing the speed at which the device can send and receive on the network.

• Load balancing

• NIC Teaming

• Quality of Service (QoS)

• Port Aggregation (PAgP)

Answer explanation

What is the purpose of using Ethernet bonding (aka NIC or adapter teaming)? (Select two.)

• Provides increased bus speeds

• Increases network performance

• Provides a failover solution for network adapters

• Enables Dual Remote Access (DRA) over a WAN link

Answer explanation

Ethernet bonding is also known as NIC teaming and adapter teaming.

An application-specific integrated circuit is used by switches to optimize network performance by performing switching operations in hardware rather than using the CPU and software

• True

• False

Answer explanation

Which of the following statements about Differentiated Services Code Point (DSCP) are true? (Select two.)

• Classification occurs at Layer 1

• The network switch assigns priority values

• It uses the DiffServ field to add precedence values

• Classification occurs at Layer 3

Answer explanation

Match the following

• Video (< 100ms latency)

• 4

• Background

• 7

• Excellent effort

• 0

• Network control

• 5

• Voice (< 10ms latency)

• 2

Answer explanation