Domain 4: Network Security Part 1

1. Which network device operates at the Data Link layer of the OSI model?

• Routers

• Switches

• Firewall

• Mobile Phone

1. Which protocol is responsible for ensuring the reliable transfer of data in the TCP/IP stack?
   

• TCP

• UDP

• HTTP

• ICMP

1. Which network device is used to connect multiple devices together in a LAN?

• Router

• Switch

• Bridge

• Gateway

_________ is the standard that defines wired connections of networked devices.

• Ethernet

• Internet

• Ports

• IEEE

What is network monitoring or sniffing?

• The act of securing a network

• Monitoring traffic patterns to obtain information about a network

• A method to resist oversized packet attacks

• The act of preventing DDoS attacks

How are VLANs used in Network Access Control (NAC) systems for a corporate environment?

• VLANs control whether devices connect to the corporate network or a guest network

• VLANs have no relevance to NAC systems

• NAC systems eliminate the need for VLANs

• VLANs are the physical wires connecting the devices

Why is an abnormal system shutdown in a data center a concern?

• It triggers the fire suppression system

• It may result in the loss or corruption of data

• It leads to quicker equipment failure

• It increases equipment temperature

What is the main purpose of an SLA?

• To create legal contracts only

• To specify data ownership

• To document specific parameters and minimum service levels

• To agree on data return and destruction details

Which of the following tools can be used to grant remote users access to the internal IT environment?

• MAC (media access control)

• VLAN (virtual local area network)

• DDOS (distributed denial-of-service)

• VPN (virtual private network)

Which network device is typically used to monitor and filter incoming and outgoing network traffic based on predetermined security rules?

• Router

• Switch

• Firewall

• Hub