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Comptia A+ > Section 2 - Networking > Flashcards

Section 2 - Networking Flashcards

(75 cards)

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1
Q

TCP

A

Transmission Control Protocol. Every packet sent is checked if it has been delivered using three steps.

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2
Q

Three steps for TCP

A

SYN: Client computer attempts a connection to a server using a synchronized packet of information packet.

SYN + ACK: The server responds and send a synchronization/acknowledgement packet.

ACK: Client sends acknowledgment packet to the server.

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3
Q

What port do web servers use?

A

443

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4
Q

FTP Ports and Type

A

File Transfer Protocol transfers files back and forth.
21 and 989/990
TCP

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5
Q

SSH Ports and Type

A

Secure Shell allows files between computers on a secured channel.
22 and 22
TCP or UDP

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6
Q

Telnet Ports and Type

A

Telecommunication network. Legacy file protocol that provides remote access to other hosts using CLI.
23
TCP or UDP

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7
Q

SMTP Ports and Type

A

Simple Mail Transfer Protocol sends email.
25 and 587 or 465.
TCP

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8
Q

DNS Ports and Type

A

Domain name server. Converts web addresses into IP addresses.
53
TCP or UDP

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9
Q

DHCP Ports and Type

A

Dynamic host configuration protocol automatically assigns up addresses to hosts.
67 (server)
68 (client)
TCP or UDP

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10
Q

HTTP Ports and Type

A

Hypertext Transfer Protocol. Allows internet website connection.
80
443 (HTTPS)
TCP

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11
Q

POP3 Ports and Type

A

Post office protocol version 3 receives emails but does not save them.
110 and 995
TCP

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12
Q

NetBIOS/NetBT Ports and Type

A

Allows legacy computer applications using NetBIOS API to be used on modern TCP/UDP.
137-139
TCP or UDP

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13
Q

IMAP Ports and Type

A

Internet Message Access Protocol enables messages to remain on a server.
143 and 993
TCP

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14
Q

SNMP Ports and Type

A

Simple Network Management Protocol is a standard for managing and monitoring devices on a network.
161
UDP

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15
Q

SNMPTRAP Ports and Type

A

162

TCP or UDP

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16
Q

LDAP Ports and Type

A

Lightweight Directory Access Protocol used to access and maintain directories of information.
389 and 636
TCP or UDP

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17
Q

SLP Ports and Type

A

Service Location Protocol allows computers to find services in a local network without prior configuration.
427
TCP or UDP

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18
Q

SMB Ports and Type

A

Server Message Block provides access to shared items such as files and printers.
445
TCP

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19
Q

AFP Ports and Type

A

Apple Filling Protocol offers file services for Macs.
548
TCP

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20
Q

RDP Ports and Type

A

Remote Desktop Protocol facilitates connections to remote computers and allows full remote control.
3389
TCP or UDP

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21
Q

Switch

A

A central connecting device that all computers connect to in a wired fashion.

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22
Q

What is the channel range for a 5GHz network frequency?

A

48 and 165.

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23
Q

What is the channel range for a 2.4GHz network frequency?

A

1 and 11.

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24
Q

What is another term SOHO routers use for MAC filtering?

A

Access Control.

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25
WEP and Encryption Level
Wired Equivalent Privacy, which is now deprecated adn vulnerable to attacks. 64-bit.
26
WPA and Encryption Level
Wi-Fi Protected Access 128-bit.
27
WPA2 and Encryption Level
Wi-Fi Protected Access Version 2 256-bit.
28
TKIP and Encryption Level
Temporal Key Integrity Protocol 128-bit that is deprecated used with WEP or WPA.
29
AES and Encryption Level
Advanced Encryption Standard 128, 192, and 256-bit used with WPA/WPA2 and is the strongest encryption method.
30
802.11a Max Data Rate and Frequency
54Mbps 5GHz
31
802.11b Max Data Rate and Frequency
11Mbps 2.4GHz
32
802.11g Max Data Rate and Frequency
54Mbps 2.4GHz
33
802.11n Max Data Rate and Frequency
300/600 Mbps 5GHz and/or 2.4GHz
34
802.11ac Max Data Rate and Frequency
1.7Gbps 5GHz
35
What can you use to help identify which airwaves are being used by different frequencies?
Wi-Fi Analyzer.
36
What is the main difference between Zigbee and Z-wave technologies?
Both transmit data on different frequencies.
37
What is an ACL?
An Access Control List is a set of rules used in a firewall that dicattes what connections are allowed.
38
What is a UTM?
A unified threat management incorporates the protection services of a firewall, antivirus, antispam, content filtering, and intrusion prevention in addition to data loss prevention (DLP).
39
What is an IDS?
An intrusion detection system determines whether an unauthorized person has attempted to access the network and alerts the system administrators.
40
What is an IPS?
An intrusion prevention system attempts to thwart unauthorized access.
41
What is an endpoint management server?
A server that has a policy-based approach to network security, which requires endpoint services (like PCs) to meet certain criteria before it can be granted access. Some examples are McAfee, Norton, and Kapersky.
42
What is the function of a firewall?
It closes ports to prevent any unwanted intrusion.
43
What type of web server does Linux use?
Apache HTTP.
44
What type of server runs Microsoft Exchange?
E-mail server.
45
What is the difference between dynamic and static IP addresses?
Dynamic IP addresses are handled by a DHCP and given automatically while static IP addresses are configured manually by a user.
46
IPv4 Bit, addresses, security and bytes.
32-bit 4 billion addresses Less secure 65,536 byte packet size max.
47
IPv6 Bit, addresses, security and bytes.
128-bit 240 undecillion addresses More secure; uses IPsec 4 billion bytes max
48
What is the loopback address for IPv4?
127.0.0.1
49
What is the loopback address for IPv6?
::1
50
How do you truncate an IPv6?
1: Remove leading zeroes. 2: Truncate four zeroes to a single zero. 3: A consecutive group of zeroes = :: and can only be used once. EXAMPLE 2001:7120:0000:8001:0000:0000:0000:1F10 turns into 2001:7120:0:8001::1F10
51
APIPA
Automatic Private IP Addressing is self-assigned by the computer and occurs when a computer cannot contact a DHCP server. It will be known as 169.254.0.0 or a "link-local" address.
52
LAN
Local area network is a group of computers located in a small area. They are connected by switches to connect to each other and to a router to access the Internet.
53
WAN
Wide area network is a group of one or more LANs over a large area. For example, connecting a LAN from New York to California is a WAN.
54
MAN
A smaller version of a WAN, a metropolitan area network / munincipal area network allows offices in the same city to connect to each other.
55
WMN
Wireless mesh network allows wireless access points to connect to each other, which is used in larger infrastructures and simpler SOHO environments (in that case, Wi-Fi).
56
PAN
Personal area network is a smaller computer network used for communication by small computing devices.
57
WPAN
Wireless personal area network is the next level of a PAN as it adds Bluetooth, wireless USB, Zigbee, or Z-Wave to allow connection between the devices. This is sometimes known as ad hoc.
58
ISDN
Integrated Services Digital Network is a digital technology developed to combat the limitations of PSTN. It's broken into two types: Basic Rate ISDN (BRI) and Primary Rate ISDN (PRI).
59
BRI
Basic Rate ISDN. 128 kbps
60
PRI
Primary Rate ISDN. 1.536 Mbps
61
POTS / PSTN
Plain old telephone service / public switched telephone network. This is the network dial-up connects to.
62
DSL
Digital subscriber line provides full data transmission over phone lines at high speeds.
63
ADSL
Asymmetrical Digital Subscriber Line enables transmission over copper wires and geared towards consumers. Rates range from 8/1Mbps to 52/16Mbps.
64
SDSL
Symmetrical Digital Subscriber Line is used for companies as a separate line and more expensive line. Data rates are the same for download and upload and ranges between 1.5 Mbps and 5 Mbps.
65
Broadband
Used for cable Internet and cable TV, which as rates from 5 Mbps to 150 Mbps.
66
FTTP
Fiber to the Premises or "fiber optic connection" uses optical fiber from a central point directly to individual buildings. Rates range from 100 Mbps to 1000 Mbps.
67
Satellite Internet
Uses a satellite dish to connect via line of sight to a satellite. Data rates similar to broadband except with a large delay due to distance.
68
Line of sight / fixed wireless Internet
Requires the customer's reception device to face the access point at the tower of the provider using high frequency microwave bands. It rivals fiber optic speeds but demands a CLEAR line of sight.
69
WiMAX
Worldwide Interoperability for Microwave Access can operate as LOS or NLOS and allows wireless technology over large distances.
70
RJ45 Crimper
Used to attach RJ45 plugs and make a crossover patch cable to allow computers to connect to each other directly.
71
Patch Tester
Ensures patch cables have a proper connection and continuity. Usually has two RJ45 jacks.
72
Loopback Plug
Simulates a network connection and helps find what port an RJ45 jack is wired to in addition to testing the network adapter on a PC to determine if TCP/IP is functioning.
73
Tone Generator and Probe Kit
Also known as a fox and hound, it has a tone-generating device and a probing device. When connected it sends a tone along the cable while the probe detects the location of the tone and its termination point.
74
Cable Tester
Community tester or cable certifier, it has a LAN testing unit that can be plugged into a port to test for continuity and test each wire in the cable.
75
Punchdown Tool
Punches individual wires into 110 IDC clipls of an RJ45 jack and the patch panel.

Comptia A+ (3 decks)

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