Chapter 1 Review Questions

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

10 volts

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?

Active Directory Domain Services (AD DS)

What is the most popular web server application?

Apache

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

Application Layer

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

Devices are daisy-chained together in a single line

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

Fail-open

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

False

Static electricity is an electrical charge in motion. T/F?

False

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

False

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

False

The Transport Layer header addresses a receiving application by a number called a MAC address. T/F

False

The protocol data unit for the Physical Layer of the OSI model is payload, or data. T/F

False

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

Fire suppression agent

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

Frame

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

IP Address

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

Layer 2: Data Link

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

Layer 3: Network

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

Layer 4: Transport

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?

Layer 5: Session

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

Layer 7: Application

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

MAC (media access control) Address

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

Material Safety Data Sheet (MSDS)

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

Occupational Safety and Health Administration (OSHA)

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

Physical Layer

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

Remote Desktop Protocol (RDP)

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

SMTP

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?

SNMP

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

Star topology

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

The President

Which of the following is an example of encapsulation?

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

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

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

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

The packet will be divided into smaller packets using fragmentation

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

They centralize user account logins

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

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

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

True

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

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. T/F

True

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

True

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

Upset failure

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

fail-close