Ch 1: Introduction to networking

Question 1

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

Answer 1

Layer 7

Question 2

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?

Answer 2

Transport Layer

Question 3

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

Answer 3

frame

Question 4

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

Answer 4

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

Question 5

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

Answer 5

Devices are daisy-chained together in a single line.

Question 6

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

Answer 6

star topology

Question 7

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

Answer 7

Material Safety Data Sheet (MSDS)

Question 8

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

Answer 8

fail-open

Question 9

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

Answer 9

fail-close

Question 10

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

Answer 10

Layer 2

Question 11

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

Answer 11

They centralize user account logins.

Question 12

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

Answer 12

Network

Question 13

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

Answer 13

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

Question 14

Which of the following is an example of encapsulation?

Answer 14

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

Question 15

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

Answer 15

SMTP

Question 16

What is the most popular web server application?

Answer 16

Apache

Question 17

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

Answer 17

Transport

Question 18

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

Answer 18

MAC (Media Access Control) address

Question 19

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

Answer 19

Physical

Question 20

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

Answer 20

Occupational Safety and Health Administration (OSHA)

Question 21

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

Answer 21

10 volts

Question 22

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

Answer 22

upset failure

Question 23

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

Answer 23

Application

Question 24

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

Answer 24

The packet will be divided into smaller packets using fragmentation.

Question 25

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?

Answer 25

fire suppression agent

Question 26

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

Answer 26

The President

Question 27

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

Answer 27

IP address

Question 28

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?

Answer 28

SNMP

Question 29

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

Answer 29

Remote Desktop Protocol (RDP)

Question 30

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?

Answer 30

Active Directory Domain Services (AD DS)