Module 1-3 Computer Network Fundamentals, OSI, Network Components Flashcards
(103 cards)
1
Q
This seven layer model categorizes various network technologies.
A
Open Systems Interconnect (OSI)
2
Q
The name given to data at different layers of the OSI model
A
Protocol Data Unit (PDU)
3
Q
How to represent binary with the presence or absence of voltage/ light
A
Current State Modulation
4
Q
How to represent binary with the transition between voltage/ light.
A
State Transition Modulation
5
Q
A mathematical algorithm that is executed on a data string by both the sender and receiver of the data string to see if it is corrupted
A
Cyclic Redundancy Check (CRC)
6
Q
Layer 1 of the OSI Model
A
Physical Layer
7
Q
PDU of layer 1 of the OSI Model
A
Bits
8
Q
Layer 2 of the OSI Model
A
Data Link Layer
9
Q
PDU of layer 2 of the OSI Model
A
Frames
10
Q
Layer 3 of the OSI Model
A
Network Layer
11
Q
PDU of layer 3 of the OSI Model
A
Packets
12
Q
Layer 4 of the OSI Model
A
Transport Layer
13
Q
PDU of layer 4 of the OSI Model
A
Segments
14
Q
Layer 5 of the OSI Model
A
Session Layer
15
Q
Layer 6 of the OSI Model
A
Presentation Layer
16
Q
Layer 7 of the OSI Model
A
Application Layer
17
Q
What is the layer name in the TCP/IP Stack that encompasses the technologies in layers 1 & 2 of the OSI Model
A
Network Interface Layer
18
Q
What is the layer name in the TCP/IP Stack that encompasses the technology in layer 3 of the OSI Model
A
Internet Layer
19
Q
What is the layer name in the TCP/IP Stack that encompasses the technology in layer 4 of the OSI Model
A
Transport Layer
20
Q
What is the layer name in the TCP/IP Stack that encompasses the technologies in layers 5, 6 & 7 of the OSI Model
A
Application Layer
21
Q
Supports different communications sessions on the same physical media by allowing to sessions to take turns in a defined time slot
A
Time-division Multiplexing (TDM)
22
Q
A connection oriented transmission protocol providing reliable transport. (If a a segment is dropped the sender can detect and retransmit the dropped segment)
A
Transmission Control Protocol (TCP)
23
Q
A connectionless oriented transmission protocol providing unreliable transport. (If a segment is dropped the sender is unaware and no retransmission occurs)
A
User Datagram Protocol (UDP)
24
Q
TCP/IP Stack is also referred to as.
A
The DoD Model
25
Cabling that is twisted and shielded with a metallic layer
Shielded Twisted Pair (STP)
26
Cabling that is twisted tighter and not shielded with a metallic layer
Unshielded Twisted Pair (UTP)
27
An electromagnetic waveform that can interfere with network cabling
Electromagnetic Interference (EMI)
28
What type of cabling is used in raised flooring buildings or buildings with open-air return ducts
Plenum
29
Cabling that has a large enough core to allow the injection of light at multiple angles
Multimode Fiber (MMF)
30
Cabling that has a core large enough to permit a single path of light
Single-mode Fiber (SMF)
31
What performs the task of taking a domain name and resolves that name into the corresponding IP address
Domain Names System server (DNS)
32
Dynamically assigns IP address information to network devices
Dynamic Host Configuration Protocol (DHCP)
33
Provides client address hiding from outside network
Proxy Server
34
A dedicated appliance whose role is to locally cache content received from a remote network
Content Engine
35
An appliance used to load-balance requests for content across a group of servers containing that content
Content Switch
36
What allows a single server to host multiple virtual instances of various operating systems
Virtual Server
37
Allows a user to store data in a centralized data center, as opposed to the hard drive of the local computer
Virtual Desktop
38
In the context of virtual technologies this refers to hosting virtual devices of hardware physically located in a corporate data center
Onsite
39
In the context of virtual technologies this refers to hosting virtual devices of hardware physically located in a service providers data center
Offsite
40
A service provider where clients can purchase data services (ex. DNS) traditionally hosted in corporate data centers
Network as a Service (NaaS)
41
Usually A VoIP telephony solution hosted by a service provider, which interconnects with a company's existing telephone system
Virtual Private Branch Exchange (PBX)
42
A VoIP signaling protocol used to setup, maintain, and tear down VoIP phone calls
Session Initiation Protocol (SIP)
43
A layer 4 protocol that carries voice and interactive video
Real-time Transport Protocol (RTP)
44
Providing applications or application services via the cloud
Software as a Service (SaaS)
45
The category of cloud permits the delivery of operation systems and libraries needed by developers
Platform as a Service (PaaS)
46
Providing network infrastructure as a service using cloud technologies
Infrastructure as a Service (IaaS)
47
An approach to computer networking that allows network administrators to programmatically initiate, control, change and manage network behavior dynamically via open interfaces and provide abstraction of lower-level functionality
Software Defined Networking (SDN)
48
Referred to as the "brains" of the SDN network
Software Defined Networking (SDN) Controller
49
Technology that permits SAN traffic of FC over the Ethernet Media
Fibre Channel over Ethernet (FCoE)
50
A specialized network for the storage of data
Storage Area Network (SAN)
51
Typically used for short-distance applications, such as carrying composite video between two nearby devices
RG-59 Cable
52
Used by local cable companies to connect individual homes to the cable companies distribution network
RG-6
53
What does RG stand for when talking about coaxial cables
Radio Guide
54
Bayonet-Concelmen Connector/ British-Naval Connector
BNC
55
Connector often used for cable TV connections
F-Connector/ F-Type
56
Category 3/ CAT 3 cable was used with what network and carries what data rate
10Base-T
10Mbps
57
Category 5/ CAT 5 cable was used with what network and carries what data rate
100Base-T
100Mbps
58
Category 5e/ CAT5e cable is used with what network and carries what data rate
100Base-TX
1Gbps
59
Category 6/ CAT6 cable is used with what network and carries what data rate
1000Base-T
1Gbps
60
Category 6a/ CAT6a cable is used with what network and carries what data rate
10GBase-T
10Gbps
61
What type of cable (used with an RJ-45 connector and swaps the transmit and receive wire pairs) is for connecting technology in the same OSI Layer
Crossover
62
What type of cable (used with an RJ-45 connector and does not swap the transmit and receive wire pairs) is for connecting technology in different OSI Layers
Straight-through
63
What port is traditionally found in a PC NIC
Media-Dependent Interface (MDI)
64
What port is traditionally found on an Ethernet Switch that reverses the transmit and receive pairs
Media-Dependent Interface Crossover (MDIX)
65
What does is found on a PC that allows it to connect to the network
Network Interface Card (NIC)
66
What wire connector is found in most Ethernet networks and has 8 pins
A type 45 Registered Jack/ RJ-45
67
What wire connector is found in most home telephone networks and has 6 pins
A type 11 Registered Jack/ RJ-11
68
What Fiber-Optic connector has a long tip extending from it
Straight Tip (ST)/ Bayonet Connector
69
What Fiber-Optic connector is a push pull type connector that is square
Subscriber Connector (SC)/ Standard Connector/ Square Connector
70
What Fiber-Optic connector has a tab that needs to be pressed when removing it
Lucent Connector (LC)
71
What Fiber-Optic connector is a push pull type with two fiber strands in one connector
Mechanical Transfer Registered Jack (MTRJ)
72
what can be used to convert for example Single-Mode Fiber (SMF) to Multi-Mode Fiber (MMF), SMF or MMF to Ethernet
Media Convertor
73
What was used in an Intermediate Distribution Frame (IDF) was traditionally used in corporate environments for cross-connection phone system cabling and does not support higher-speed LAN technologies
66 Block
74
What is used in an Intermediate Distribution Frame (IDF) replaced the 66 Block and supports higher-speed LAN technologies
110 Block
75
What centralized thing connects multiple Intermediate Distribution Frames (IDF)
Main Distribution Frame (MDF)
76
What allows wireless clients to connect to a wired network by communicating via radio waves
Wireless Access Point (AP)
77
What refers to connecting everyday objects to the internet in order to make them "smart"
Internet of Things (IoT)
78
What wireless communication protocol is used primarily for home automation
Z-Wave
79
What wireless communication protocol is used primarily for monitoring sensor data (eg heart rate)
ANT+
80
What wireless technology allows devices to communicate in short distances creating a Personal Area Network (PAN)
Bluetooth
81
What is a set of communication protocols that enables two devices to transfer information
Near Field Communication (NFC)
82
What wireless technology permits data transmission in short-range communication among computer peripherals and personal digital assistants
Infrared (IR)
83
What wireless technology uses electromagnetic fields to identify and track tags attached to objects
Radio-Frequency Identification (RFID)
84
What layer 1 device receives data in one port and then transmits that data out every other port
Hub
85
What type Hub does not amplify (electronically regenerate) received bits
Passive Hub
86
What type of Hub regenerates received bits
Active Hub
87
What type of Hub has enhanced features like Simple Network Management Protocol (SNMP) support
Smart Hub
88
What joins two or more LAN segments
Bridge
89
What Layer 2 device can dynamically learn MAC addresses attached to its various ports
Switch
90
What Layer 3 device can forward based off upper layer information
Multilayer Switch
91
What Layer 3 devices forwards information based off logical addresses (IP Addresses)
Router
92
What type of network is used to make secure connections through untrusted networks
Virtual Private Network (VPN)
93
What dedicated device can terminate a VPN circut
VPN Concentrator
94
What network security appliance allows traffic originated inside the network to go out to the internet but does not allow traffic originated in the internet to go into the network
Firewall
95
An address record that maps a host name to an IPV4 address
A
96
An address record that maps a host name to an IPV6 address
AAAA
97
An alias of an existing record allowing multiple DNS records to map to the same IP address
A Canonical Name (CNAME)
98
A record that maps to an email server for that domain
Mail Exchange (MX)
99
a record that delegates a DNS Zone to use the given authoritative names server
NS
100
A record that points to a Canonical Name
A Point Record (PTR)
101
A record that provided authoritative information about a DNS zone
A State of Authority Record (SOA)
102
A generalized service location record
SRV
103
A record originally used for arbitrary human-readable text in a DNS Server
TXT
