Domain 2 Nework+ Review Flashcard

Front

Which devices provide the lowest latency and highest bandwidth for connectivity? Hubs, Switches, Bridges, Routers

Back

Switches

Answer explanation

Switches provide the lowest latency with the use of application-specific integrated circuits (ASICs).

Front

Which networking component allows you to detect and prevent malicious network activity? Options: Firewall, IDS/IPS, Proxy server, Content filter

Back

IDS/IPS

Answer explanation

IDS/IPS (Intrusion Detection and Intrusion Prevention Systems) offer detection and prevention of network intrusion of malicious activity. Firewalls will normally prevent but will not detect malicious network activity.

Front

Which device will act as a multiport repeater in the network?

Back

Hub

Answer explanation

A hub will act as a multiport repeater by repeating the physical bits on an incoming port to all the other connected ports.

Front

Which is a function of a layer 2 switch? Options: Forwarding the data based upon logical addressing, Repeating the electrical signal to all ports, Learning the MAC address by examining the destination MAC address, Determining the forwarding interfaces based upon the destination MAC address and tables.

Back

Determining the forwarding interfaces based upon the destination MAC address and tables.

Answer explanation

Switches lean MAC addresses based upon incoming ports and examination of the source MAC address. It will build a MAC address table for future lookups.

Front

What type of surveillance camera should you deploy to record equipment from the time it enters your data center to the time it is installed? Options: CCTV, PTZ, Coaxial, PoE

Back

PTZ

Answer explanation

PTZ is point, tilt, zoom, this allows for intervention of a situation.

Front

You need to protect against threats for specific URLs on your web server. Which device should you implement?

Back

NGFW

Answer explanation

NGFW is next generation firewall to protect against application-level threats, such as access to particular URLs.

Front

Which component is commonly found inside of a SCADA system? Options: HMI, Access control panel, Security console, Smart speaker

Back

HMI

Answer explanation

The human machine interface (HMI) is a common component for SCADA systems.

Front

Which routing type is best implemented in stub networks?

Back

Default routing

Answer explanation

Default routing is the best implemented in stub networks because all networks other than the immediate one are accessed through the default gateway.

Front

Which routing protocol should you use to ensure that if there is a failure, the routing protocol will advertise your company's IP addresses and fail over? Options: RIPv2, EIGRP, OSPF, BGP

Back

BGP

Answer explanation

Border Gateway Protocol is used as an external routing protocol for the Internet. When 2 providers are connected to a single site using BGP, the connection can fail over in the case of one provider suffering an outage.

Front

Which quality of service (QoS) method is used at layer 2 of the OSI?

Back

CoS

Answer explanation

The Class of Service (CoS) marking is a 3-bit field in the 802.1Q trunk frame. This 3-bit field contains eight possible queues for QoS at layer 2.