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Mod 4 Review McCarthy
Mod 4 Review McCarthy
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1
Which layers in the
OSI model corresponds
to the
Network Interface Layer
of the
TCP/IP Model?
Data Link Layer
Network Layer
Physical Layer
Transport Layer
2
What is Jitter?
Variation in delay that affects streaming quality
When data stream is slowed by too many devices using network resources
Packets get corrupted from bit errors caused by interference
Amount of time it takes for a packet to each its destination
3
Packets can arrive
intact, but out of order.
False
True
4
Which of these best describes
Data Terminal Equipment?
Equipment that performs signal conversion & coding between DTE and the line
End instrument that converts user info into signals for transmission
5
Which layer of the OSI model does the
Hub belong?
Data Link
Transport
Network
Physical
6
Routing Protocols send Routed Protocols to their destination.
What do Routed Protocols do?
Provide logical addressing and encapsulates information
Network to routing
Sends data packets on their way to the destination
Network to switch
7
Which is any device on a network?
Hub
Bridge
Node
Switch
8
True or False:
IPv4 Class E
is used for multicasting/broadcasting.
False
True
9
What device is used to segment a network into
other VLANs?
Hub
Node
Bridge
Switch
10
Which of these best describes
Data Communication Equipment?
End instrument that converts user info into signals for transmission
Equipment that performs signal conversion & coding between DTE and the line
11
True or False: Ports on a switch are
open
by default.
True
False
12
True or False: An
Extranet
is a private network accessible to
only select users.
True
False
13
Which has the
correct Network/Host portions
for a
class C
address?
Network.Host.Host.Host
Network.Network.Network.Host
Network.Network.Host.Host
Network.Network.Host.Netwrok
14
What are two
advantages
of WLANs?
Mobility
Speed
Security
Cost
15
OSI Model: What are the
two sublayers
of the
Data Link Layer?
Link Layer Control
Media Access Control
Multimedia Address Control
Logical Link Control
16
Which are types of network media?
Twisted Pair Cable
Coaxial cable
Wireless Media
Optical Fiber Cable
17
A
common
example of
Undesired Traffic
is...
Shopping and Web Browsing
Online Gaming
Malicious Software
Emails from the commander
18
What type of traffic does
VoIP, Online Gaming, Web Conferencing,
and
Web Browsing
typically fall under?
Best Effort Traffic
Undesired Traffic
Sensitive Traffic
Uncategorized Traffic
19
In some networks,
skype is considered undesired traffic.
True
False
20
Low Throughput occurs when...
Traffic is too sensitive
Load bearings are overloaded
Not enough devices on the network
Too many devices are using network resources
21
What are the two factors that
switches optimize
on a network?
Security
Efficiency
Traffic Filtering
Optimization
22
What does
BVI stand for?
Based Variable Intercommunications
Border Variable Interface
Bridge Virtual Interface
Battery Voltage Information
23
What is a VPN?
A malicious virtual network designed to trick people into connecting
An encrypted tunnel from one computer to a private network on the internet
A virtual network that filters undesired traffic, for a real network
Allows remote viewing of a real network by creating a virtual clone
24
A Twisted-Pair Cable can be defined as...
A cable consisting of one or more thin flexible fibers with a glass core
Two insulated copper wires twisted together over the length
The least commonly used media in modern IP networks
A center conductor surrounded by insulating material
25
Jitter is defined as the amount of time it takes for a packet to reach its destination.
True
False
26
What is the IEEE standard that governs
bridging?
IEEE 802.11
IEEE 802.3
IEEE 802.69
IEEE 802.1
27
Which of the following
is a reason
why a router would drop a packet?
Data loads are corrupted
Packet traveling too fast
Incorrect Port Address
Router Buffer is full
28
What are two methods to exploit WLAN vulnerabilies?
Phishing
Rogue Access Points
War Driving
Brute Force
29
What device's primary function is to connect seperate LANs together?
Routers
Switches
Bridges
Hubz
30
A Fiber-Optic Cable can be defined as...
Empty choice
A cable consisting of one or more thin flexible fibers with a glass core
A center conductor surrounded by insulating material
Two insulated copper wires twisted together over the length
31
Collision
Avoidance
is for wired or wireless networks?
Wired
Wireless
32
What is a
key difference
between a WAN and a LAN?
Processing Power
Scalability
Speed
Wireless & Wired
33
Which of the following is an
Interior Routing Protocol?
BGP - Border Gateway Protocol
ICMP - Internet Control Message protocol
SMTF - Simple Mail Transfer
OSPF - Open Shortest Path First
34
In a
Star
topology, all devices are connected to a central...
Cable
Bus
Switch/Hub
Router
35
Which best categorizes
programs that
accomplish tasks
like accessing shared files or web browsing
Google Chrome
Devices
Microsoft Office
Applications
36
Which type of Area Network covers,
at MOST, a small
group of buildings?
Small Area Network (SAN)
Local Area Network (LAN)
Building Area Network (BAN)
Metropolitan Area Network (MAN)
37
True or False: An
intranet
is a network that
anyone is allowed access
to.
True
False
38
Knowing the class of an IPv4 address can also tell you the
default subnet mask.
True
False
39
Wireless Media can be defined as...
Media utilizing RF or infrared devices to transmit and receive data
A center conductor surrounded by insulating material
A cable consisting of one or more thin flexible fibers with a glass core
Two insulated copper wires twisted together over the length
40
OSI Model: Order the layers from
first to last.
Network Interface-Internet-Transport-Application
Physical-Data Link-Network-Session-Transport-Presentation-Application
Physical-Data Link-Network-Transport-Session-Application-Presentation
Physical-Data Link-Network-Transport-Session-Presentation-Application
41
Firewalls can exist on both
Software AND Hardware.
True
False
42
Are IP routing protocols
Dynamic or Static?
Dynamic
Static
43
Most Autonomous Systems
don't
directly link with each other.
Instead, they...
Actually, most of them directly link with eachother
Use data courier pigeons, which was once a popular routing method
Use virtual private networks to create an encrypted tunnel to share data
Route data through other Autonomous Systems that agree to carry the traffic
44
Dynamic Routing is Automated Route Calculation, not set by an admin.
False
True
45
Which of these is the only
intelligent
device?
Hub
iPhone
Bridge
Switch
46
True or False: A switch is an intelligent device.
False
True
47
An
IPv4 address
can be defined as...
32-bit Logical Routing Address
128-bit Hexadecimal Routing Address
32-bit unique identifier for a device
42-bit Logical Routing Address
48
What type of traffic is
not
sensitive to Quality of Service metrics?
Uncategorized Traffic
Best Effort Traffic
Undesired Traffic
Sensitive Traffic
49
Which
three
methods does EtherChannel use to decide which physical link to choose?
Source & Destination Port
Source & Destination Router
NONE of the above
Source & Destination MAC
Source & Destination Device
Source & Destination IP
50
True or False: Peer-to-peer networks contains devices that
act as both
a client
and
a server.
False
True
51
What are the two types of Network Classifications?
Wireless
Client/Server
Bus Topology
Peer-to-peer
52
What does
EtherChannel do?
Groups several physical ethernet links to create one logical link
Increases speed and connection strength
Creates an inseverable link using the POF (Power of Friendship) principle
Increases speed and nothing else
53
What are the DSCP two filtering methods?
Port Numbers
Packet Size
IP Address Filtering
Deep Packet Inspection
54
What protocol do admins use to
monitor/map
network availability and error rates?
WPA3
Internet Control Message Protocol
The human eye
Simple Network Management Protocol
55
Which of these best describes a
Default Gateway?
An access point for a network
Enhances security for a router
Denies access to a network
Enables two devices in the same LAN to communicate with each other
56
Physical Layer controls how _____ is placed on network media
Data
Frames
None of the above
Bits
57
What is defined as the
language
that machines speak?
English
C++
Money 💸💰🤑🤑
Software
58
A Coaxial Cable can be defined as...
A cable consisting of one or more thin flexible fibers with a glass core
A center conductor surrounded by insulating material
Most recently invented type of cable
Two insulated copper wires twisted together over the length
59
How do you cheat the
Port Number
DSCP filtering method?
Changing the Port Number
Changing the DSCP identifier to sensitive traffic
Find a network device that does not support Port Number filtering
Spoofing the MAC address
60
Define:
The amount of time a packet takes to reach its destination.
Out of Order
Low throughput
Jitter
Latency
61
What is
Cisco's proprietary
method for Link Aggregation?
Uninterruptable Connection Service
Ethernet Link Aggregation
EtherChannel
Cisco Proprietary Solutions (CPS)
62
Which type of DSCP filtering is
supported by many network devices?
Deep Packet Inspection
Question
IP Filtering
Port Numbers
63
Which of the following
best describes a Gateway in Autonomous Systems?
A logical gate that recieves two inputs and produces an output
A machine that monitors incoming network traffic and blocks it when needed
Switches that perform switching functions between networks/systems
Routers that perform routing protocol functions between networks/systems
64
All routing protocols do
2
things.
What are they?
Send all information as efficiently as possible
Group incoming information
Terminate unwanted traffic
Encrypt and Decrypt data
65
Wired networks use Collision
Detection.
False
True
66
Which type of network experiences
higher latency?
Wired
Wireless
67
Sensitive traffic is expected to _____.
Be dope
Be classified
Be delivered on time
Be encrypted
68
What kind of topology are
most of today's
networks?
Hybrid
Star
Ring
Mesh
69
Which part of CSMA/CD is an ongoing activity?
Carrier Sense
Multiple Access
Collision Detection
Trick Question
70
Email Applications are an example of Best Effort Traffic
True
False
71
What does a router base its forwarding decisions on?
MAC addresses
Availability
Speed
IP addresses
72
What are
causes of Bit Errors?
Electrical Noise
Electrical Interference
Unexpected Packet Droppage
Incorrectly Classified Traffic
73
What is Redundancy?
Duplication of critical components/devices to increase system reliability
Devices that have outserved their purpose and are now redundant
The concept of being redundant
Components that are not to be considered when setting up a system
74
What are the two
main
types of Topologies? (Not bus, star, etc)
Logical
Network
Physical
Schematic
75
What is a VPN
concentrator?
Concentrates on VPN metrics for admin analysis
Type of network device that provides secure creation of VPN connections
An attack tool used to scramble VPN topologies to render them unusable
Consolidates existing VPNs into a smaller one to save resources
76
Which is the
most commonly used
wired media?
Fiber Optics
Infrared
Twisted Pair
Coaxial
77
UDP Protocol is Connection Oriented.
True
False
78
The
Physical Layer
can contain _____ media.
Visual
Energized
Wireless
Switched
79
On which layer of the OSI model do
bridges
belong?
Network
Data Link
Transport
Physical
80
Which of the following Area Networks
DOES NOT
exist?
Public Area Network (PAN)
Metropolitan Area Network (MAN)
Local Area Network (LAN)
Wide Area Network (WAN)
81
What are
three
ways to increase system reliability
through Redundancy?
Lightning Rods and Proper Grounding
Updating hardware as soon as possible
Reducing resource usage
Link Aggregation
Facility Generators
Uninterruptable Power Supply
82
What component allows you to connect to a network?
Common Access Card (CAC)
Transition Card
Media Access Control (MAC)
Network Interface Card (NIC)
83
Deep Packet Inspection is _____ and _____ compared to Port Number Filtering
Less resource consuming
Faster
Slower
Dumber
More Thourough
Easier to cheat
84
What does a
server
do on a
Client/Server
network classification?
Requests resources from the central server
Provides resources to client devices
Prints bulldog pictures
Requests cookies from the bakery client
85
What is a MAC address?
16-bit unique identifier for a device
32-bit logical routing address
Malware Access Control, prevents malware from accessing control.
48-bit unique identifier for a device
86
A device's MAC address can
either
be located on the NIC, or the...
None of the above
FCC certification
Motherboard
Central Processing Unit (CPU)
87
Which device
repeats the frame
across all ports?
Bridge
Node
Switch
Hub
88
Which IEEE standard
governing WLANS
was
invented first?
802.11b
802.11
802.11a
802.10
89
What is an
Autonomous System?
An automated system of networks capable of sustaining itself without admins
A collection of networks hosted by varying administrations
A rogue autonomous neural network set on the destruction of humanity
A collection of networks hosted by one administration
90
True or False: Hubs, Bridges, Routers, and Nodes, are all intelligent devices capable of Learning.
True
False
91
A DSCP field operates under principles of...
Individual Flow
Traffic Classification
Indiscriminatory
First come first serve
92
What does a
client
do on a
Client/Server
network classification?
Requests access to shared resources, and makes use of them
Provides network resources like email, files, hot dogs, printers
Shares and manages network resources
Connects directly to other clients
93
This defines everything we know about modern network hardware.
Network Schematics
Transistors
Ethernet
Network Interface Card (NIC)
94
What does IEEE stand for?
Insidious Electrifying Executive Elephants
Institute of Electrical & Electronic Engineers
Institute of English Engineering Electronics
Institute of Engineering & Electronic Efficiencies
95
Select the Topologies that contain a single point of failure.
Ring
Star
Bus
Mesh
96
What is a
Bridge Virtual Interface
useful for?
Interfacing virtually with bridge construction workers
Interfaces with a VPN to allow extra connections
Having multiple routers act as one collision domain
Bridging the gap between multiple Autonomous Systems
97
True or False: Routers connect networks to ISPs and other LANs.
False
True
98
What is used to
connect OR split
networks?
Switch
Hub
Bridge
Node
99
True or False:
Encryption
occurs on the
Transport
Layer.
True
False
