Ch 1: Introduction to networking Flashcards
HTTP, IMAP4, FTP, and Telnet are all examples of protocols that operate at what layer of the OSI model?
Layer 7
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?
Transport Layer
The Data Link Layer utilizes what name for its protocol data unit (PDU)?
frame
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 is a defining characteristic of a bus topology based network?
Devices are daisy-chained together in a single line.
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
The proper handling procedures for substances such as chemical solvents is typically outlined in which of the following options?
Material Safety Data Sheet (MSDS)
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
An open electrical circuit as a result of a failed circuit breaker is considered to be what type of failure system?
fail-close
At what layer of the OSI model does a network switch normally operate?
Layer 2
Which of the following is not one of the disadvantages of peer-to-peer networks?
They centralize user account logins.
At what layer of the OSI model do the IP, ICMP, and ARP protocols operate?
Network
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.
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 mail protocol is used to send mail messages to a server?
SMTP
What is the most popular web server application?
Apache
The TCP and UDP protocols both exist at what layer of the OSI model?
Transport
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
In the TCP/IP model, what layer is considered so simple that it is ignored entirely?
Physical
What federal agency is charged with safety and health in the workplace?
Occupational Safety and Health Administration (OSHA)
What is the minimal amount of voltage required to damage an electrical component?
10 volts
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
In the TCP/IP model, what layer combines the responsibilities of the Application, Presentation, and Session layers from the OSI model?
Application
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.
