Network+ Guide to Networks, 8th Edition

fail-open

A policy in which all exit doors for a building stay unlocked during a fire is an example of what type of policy?

True

After a problem and its symptoms have been identified, a theory regarding a probable cause should be established.

fail-close

An open electrical circuit as a result of a failed circuit breaker is considered to be what type of failure system?

Network

At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?

Layer 2

At what layer of the OSI model does a network switch normally operate?

Layer 7

HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model?

star topology

If your network consists of all connected devices connecting to one central device, such as a switch, what type of topology is being used?

Active Directory Domain Services (AD DS)

In a domain, the process of allowing a user to sign on to the network from any computer on the network and get access to resources is managed by what service?

fire suppression agent

In a fire suppression system, what term is used to describe what is typically a foaming chemical, gas, or water that is sprayed everywhere to put out a fire?

The Presentation layer is responsible for reformatting, compressing, and/or encrypting data in a way that the application on the receiving end can read.

In considering the responsibilities of each layer of the OSI model, what statement accurately reflects those of the Presentation layer?

True

In general, an API (application programming interface) call is the method an application uses when it makes a request of the OS.

Application

In the TCP/IP model, what layer combines the responsibilities of the Application, Presentation, and Session layers from the OSI model?

Physical

In the TCP/IP model, what layer is considered so simple that it is ignored entirely?

The President

In the United States, who is able to activate the Emergency Alert System at the national level?

False

Servers that have a NOS installed require less memory, processing power, and storage capacity than clients because servers are called on to handle only light processing loads and requests from multiple clients.

False

Static electricity is an electrical charge in motion.

frame

The Data Link Layer utilizes what name for its protocol data unit (PDU)?

False

The Data Link layer attaches a trailer to the end of a packet, and does not include a header.

Transport

The TCP and UDP protocols both exist at what layer of the OSI model?

False

The Transmission Control Protocol (TCP) is considered to be a connectionless, or best-effort delivery protocol.

False

The Transport layer header addresses a receiving application by a number called a MAC address.

Remote Desktop Protocol (RDP)

The Windows Remote Desktop application utilizes what protocol to provide secure, encrypted transmissions?

MAC (Media Access Control) address

The frame header at the Data Link layer includes hardware addresses of the source and destination NICs. What is another name for this address?

True

The fundamental difference between a switch and a router is that a switch belongs only to its local network and a router belongs to two or more local networks.

Material Safety Data Sheet (MSDS)

The proper handling procedures for substances such as chemical solvents is typically outlined in which of the following options?

False

The protocol data unit for the Physical layer of the OSI model is payload, or data.

True

The term firmware refers to programs embedded into hardware devices. This software only changes when a firmware upgrade is performed.

SNMP

What Application layer protocol can be used to monitor and gather information about network traffic and can alert network administrators about adverse conditions that need attention?

Occupational Safety and Health Administration (OSHA)

What federal agency is charged with safety and health in the workplace?

Devices are daisy-chained together in a single line.

What is a defining characteristic of a bus topology based network?

IP address

What is assigned to each node on a network, which is then used by the Network layer to uniquely identify the node?

10 volts

What is the minimal amount of voltage required to damage an electrical component?

Apache

What is the most popular web server application?

Session Layer

What layer of the OSI model describes how data between applications is synced and recovered if messages don't arrive intact at the receiving application?

SMTP

What mail protocol is used to send mail messages to a server?

The packet will be divided into smaller packets using fragmentation.

What occurs if a network layer protocol is aware that a packet is larger than the maximum size for its network?

The message is divided into smaller messages called segments (for TCP) or datagrams (for UDP).

What statement accurately reflects what occurs when a message is too large to transport on a network?

upset failure

When dealing with static electricity, what kind of failure caused by static discharge shortens the life of a component, and can cause intermittent errors?

The addition of a header to data inherited from the layer above in the OSI model.

Which of the following is an example of encapsulation?

They centralize user account logins.

Which of the following is not one of the disadvantages of peer-to-peer networks?