Worksheetsmine#1_managment_networkCoursera
Total questions: 50
Worksheet time: 25mins
When a flow of information occurs from point a to point b and then back from point b to point a over a second medium that is considered a _____.
channel
circuit
conduit
route
Communication that can travel in both directions simultaneously is referred to as _____.
simplex
half-duplex
half-simplex
full duplex
Communications networks that connect a few rooms or buildings are called _____.
local area networks (LANs)
wide area networks (WANs)
fiber enabled networks (FENs)
metropolitan area networks (MANs)
When describing physical network connections, the jack where a cable connects on a networking card or the computer systems unit is called a _____.
dongle
inlet
outlet
port
Most contemporary Category 5 or 6 wired computer connections use a cabling standard known as _____.
RJ-45
RJ-46
waveguide
TR-32
A(n) _____ is programmed or can learn which devices are connected to which physical connections, but they use more complex protocols that regulate their communications to move data where it is needed.
switch
hub
router
Waveguide
_____ are standards that define how technology interacts at different levels.
Protocols
Routers
Contracts
Agreements
The Open Systems Interconnection or OSI reference model is _____.
a detailed requirement that documents how all computer systems interact when moving textual data on the Internet
a government mandated technical specification required for any computer connecting to the Internet
a specialty standard used by only a few companies in order to prevent errors in transmission
a general model used to describe how the various layers of technology manipulate data as it transferred from one place in the network to another
The top-layer of the OSI Model is called the _____ layer and controls how software interacts between the user and the rest of the layers.
Physical
Application
Transport
Session
In order for TCP/IP IPv4 addresses to identify both networks and specific computers the protocol uses a _____.
stack pointer
subnet mask
hidden moderator
Internet mask
In order for a network to assign network addresses as they are needed they use _____.
FTP - File Transfer Protocol
LAN - Local Area Networking
DHCP - Dynamic Host Configuration Protocol
RJE - Remote Job Entry
Most contemporary wired Local Area Networks use a protocol called _____ to manage the physical layer.
TokenNet
WiFi
RADIUS
Ethernet
The Internet service _____ was developed in 1989 by Tim Berners-Lee.
World Wide Web (WWW)
File Transfer Protocol (FTP)
Terminal Emulation (telnet:)
To access to World Wide Web the user directly interacts with a program called a _____ such as Firefox or Chrome.
browser
server
protocol stack
spinner
The content the user sees when accessing the World Wide Web is received as _____.
Secure Message Language (SML)
Hypertext Markup Language (HTML)
Web Display Markup (WDM)
Terminal Emulation Script (TES)
_____ allows users to connect a remote shell to run programs, view files, and perform a variety of other operations as if they were using the system locally.
The World Wide Web (WWW)
Terminal Emulation (telnet)
Skunkworks File Manager (SFM)
The File Transfer Protocol (FTP)
_____ provides a communication framework with centralized directories that hold a variety of useful data such as directory services and user rights.
The World Wide Web (WWW)
Terminal Emulation (telnet)
Lightweight Directory Access Protocol (LDAP)
The File Transfer Protocol (FTP)
A secure replacement for FTP and telnet is available by using _____.
WWW
SFTP and Qdisk
SFTP and Secure Shell
SMTP and POP3
For communication to occur, each of the following must be involved EXCEPT:
a sender
a receiver
a medium
an observer
Communications that can travel in both directions but has to alternate turns is referred to as _____.
simplex
half-duplex
half-simplex
full duplex
Two-directional communication media in wide use today is all of the following EXCEPT:
cables
radio waves
optical discs
optical fibers
A(n) _____ receives a message from one computer and then relays it to all of the other computers connected to it.
switch
hub
router
waveguide
In computer network _____ are used to describe the cost or number of connection it expects a data packet to take before it reaches the next destination.
jumps
links
hops
humps
The most popular and prevalent protocol stack in use today is _____.
TCP/IP
Token Ring
CICS
WAN-link
Most contemporary wired Local Area Networks use a protocol called _____ to manage the physical layer.
TokenNet
WiFi
RADIUS
Ethernet
The element of the TCP/IP protocol stack that lets users access Web locations with names instead of numbers is the _____.
Domain Name System (DNS)
File Transfer Protocol (FTP)
Address Relocation Protocol (ARP)
Route Information Protocol (RIP)
Which of the following is not an email-oriented protocol?
SMTP
FTP
POP3
IMAP
_____ is a simple method of transferring files between computer systems and operates in the Application layer and only uses TCP for communication.
The World Wide Web (WWW)
The Terminal Emulation protocol (telnet)
The Skunkworks File Manager (SFM)
The File Transfer Protocol (FTP)
A(n) _____ is a combination of hardware and software that filters or restricts specific information from moving between the outside network and the inside network.
switch
IDPS
router
firewall
A(n) _____ is a firewall which examines the header information of data packets that come into a network and determines whether to deny them or forward them to the next network connection, based on its configuration rules.
stateful packet inspection firewall
packet filtering firewall
application layer proxy firewall
next generation firewall
The ____ firewall deployment model is when the organization places multiple devices between the inside and outside networks, in an area of the network known as the demilitarized zone or DMZ.
bastion host
screened host
screened subnet
double access
Most modern firewalls use complicated configurations typically with _____ of rules.
a few
hundreds
millions
dozens
When a firewall is configured which of the following is NOT true:
all firewall devices are not accessible or manageable directly from the public network
all ICMP data should be allowed
all email traffic should only be routed to an email server
terminal emulation via telnet connections should be denied
Using virtual machine environments to host firewalls adds _____ to the organization in simplifying the operation of a firewall, but can make configuring it more difficult.
flexibility
rigidity
ease of configuring
Fragility
A(n) _____ is the cybersecurity version of a burglar alarm.
firewall
log file monitor
intrusion detection system
data exfiltration system
A(n) _____ is an IDPS that resides on a particular computer or server, known as the host, and monitors activity only on that system.
host-based IDPS (HIDPS)
router-based IDPS (RIDPS)
cloud-based IDPS (CIDPS)
network-based IDPS (NIDPS)
The process of configuring the IDPS so that it minimizes both the False Positive and False Negative rates is called _____.
tuning
tweaking
rumbling
ramping
A Virtual Private Network or VPN uses encryption technology to create _____
a persistent connection between two or three points
a persistent connection between two points
a secured connection between two points
a secured connection between two or more points
Using IPSec’s _____ mode, two VPN servers are set up to communicate with each other and any traffic that is destined for the other network is first encrypted and embedded in a packet that is addressed by one VPN server for the other.
header
packet
byte
tunnel
Using IPSec’s _____ mode, the user makes a client-to-network connection by signing in to activate a piece of software, then log in with their credentials to establishes a connection with the destination network.
transport
packet
byte
tunnel
_____ is the process of converting a readable message into a form that cannot be understood by unauthorized individuals or systems
Decryption
Encryption
Plaintext
Ciphertext
_____ describes the processes involved in encoding and decoding messages so that others cannot understand them.
Cryptomancy
Cryptology
Cryptanalysis
Cryptography
_____ is the process of deciphering the original message (or plaintext) from an encrypted message (or ciphertext), without knowing the algorithms and keys used to perform the encryption.
Cryptomancy
Cryptology
Cryptanalysis
Cryptography
_____ encryption uses that the same algorithm and key to both encipher and decipher the message, also known as private key encryption.
Symmetric
XOR
Asymmetric
XAND
A(n) _____ will read the request, and then retrieve the information requested itself. It may also cache frequently requested information to speed up operations
stateful packet inspection firewall
packet filtering firewall
application layer proxy firewall
next generation firewall
One administrative challenge is that each firewall brand is _____.
fairly interchangeable and uses a common configuration language
unique but using a common configuration language
unique and may have its own configuration language and rules
the same as every other
A(n) _____ is the cybersecurity version of a burglar alarm.
firewall
log file monitor
intrusion detection system
data exfiltration system
A(n) _____ is an IDPS that resides on a computer or appliance connected to a segment of an organization’s network and monitors traffic on that segment, looking for indications of ongoing or successful attacks.
host-based IDPS (HIDPS)
router-based IDPS (RIDPS)
cloud-based IDPS (CIDPS)
network-based IDPS (NIDPS)
Virtually all IDPS have the capability to _____.
modify their own configuration
turn off the network connection
modify a connected router's configuration
log suspicious activity
The _____ level is the predefined assessment level that triggers a predetermined response when surpassed.
tamping
clipping
ramping
chopping
