ITN 101 Chapter 1
At what layer of the OSI model does a network switch normally operate?
Layer 2
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model?
Layer 7
The proper handling procedures for substances such as chemical solvents is typically outlined in which of the following options?
Material Safety Data Sheet (MSDS)
After a problem and its symptoms have been identified, a theory regarding a probable cause should be established.
True
The term firmware refers to programs embedded into hardware devices. This software only changes when a firmware upgrade is performed.
True
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)
The TCP and UDP protocols both exist at what layer of the OSI model?
Transport
In general, an API (application programming interface) call is the method an application uses when it makes a request of the OS.
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.
True
An open electrical circuit as a result of a failed circuit breaker is considered to be what type of failure system?
fail-close
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
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?
fire suppression agent
The Data Link Layer utilizes what name for its protocol data unit (PDU)?
frame
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
When dealing with static electricity, what kind of failure caused by static discharge shortens the life of a component, and can cause intermittent errors?
upset failure
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.
False
The Data Link layer attaches a trailer to the end of a packet, and does not include a header.
False
The Transmission Control Protocol (TCP) is considered to be a connectionless, or best-effort delivery protocol.
False
The protocol data unit for the Physical layer of the OSI model is payload, or data.
False
What is assigned to each node on a network, which is then used by the Network layer to uniquely identify the node?
IP 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?
MAC (Media Access Control) address
At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?
Network
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
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
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?
Session Layer
In considering the responsibilities of each layer of the OSI model, what statement accurately reflects those of the Presentation layer?
The Presentation layer is responsible for reformatting, compressing, and/or encrypting data in a way that the application on the receiving end can read.
What is the minimal amount of voltage required to damage an electrical component?
10 volts
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.
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
What is a defining characteristic of a bus topology based network?
Devices are daisy-chained together in a single line.
The Transport layer header addresses a receiving application by a number called a MAC address.
False
