CISA - 4

Which of the following devices extends the network and has the capacity to store frames and act as a storage and forward device?

• Router

• Bridge

• Repeater

• Gateway

A critical function of a firewall is to act as a:

• Special router that connects the Internet to a LAN

• Device for preventing unauthorized users from accessing the LAN

• Server used to connect authorized users to private trusted network

  resources

• Proxy server to increase the speed of access to authorized users

A hub is a device that connects:

• Two LANs using different protocols

• A LAN with a WAN

• A LAN with a metropolitan area network (MAN)

• Two segments of a single LAN

Which of the following is a telecommunication device that translates data from digital form to analog form and back to digital?

• Multiplexer

• Modem

• Protocol converter

• Concentrator

What type(s) of firewalls provide(s) the greatest degree of protection and control because the firewall technology inspects all seven OSI layers of network traffic?

• A first-generation packet-filtering firewall

• A circuit-level gateway

• An application-layer gateway, or proxy firewall, and stateful-inspection

  firewalls

• An application-layer gateway, or proxy firewall, but not stateful-

  inspection firewalls

Using the OSI reference model, what layer(s) is/are used to encrypt data?

• Transport layer

• Session layer

• Session and transport layers

• Data link layer

Relatively speaking, firewalls operated at the application level of the seventh layer OSI model are:

• Almost always less efficient

• Almost always less effective

• Almost always less secure

• Almost always less costly to setup

An offsite information processing facility having electrical wiring, air conditioning and flooring, but no computer or communications equipment is a:

• Cold site

• Warm site

• Dial-up site

• Duplicate processing facility

Off-site data backup and storage should be geographically separated so as to _________ the risk of a widespread physical disaster such as a hurricane or earthquake.

• Accept

• Eliminate

• Transfer

• Mitigate