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CompTIA A+ 1101 > CompTIA A+ 1101 Study Deck > Flashcards

CompTIA A+ 1101 Study Deck Flashcards

Server Port Numbers

1
Q

File Transfer Protocol (FTP)—Data connection

A

Port 20/TCP
Make files available for download across a network

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2
Q

File Transfer Protocol (FTP)—Control connection

A

Port 21/TCP

Make files available for download across a network

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3
Q

Secure Shell (SSH)

A

Port 22/TCP

Make a secure connection to the command-line interface of a server

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4
Q

Telnet

A

Port 23/TCP

Make an unsecure connection to the command-line interface of a server

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5
Q

Simple Mail Transfer Protocol (SMTP)

A

Port 25 /TCP

Send email messages across a network

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6
Q

Domain Name System (DNS)

A

Port 53/TCP/UDP Resolves host names to IP addresses

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7
Q

Dynamic Host Configuration Protocol (DHCP)

A

Port 67,68 UDP

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8
Q

HyperText Transfer Protocol (HTTP)

A

Port 80/TCP

unsecure websites and web services

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9
Q

Post Office Protocol (POP3)

A

Port 110/TCP

Retrieve email messages. Inbound mail.

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10
Q

NetBIOS over TCP/IP

A

Port 137-139 UDP/TCP

File/Printer sharing Windows network

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11
Q

Internet Mail Access Protocol (IMAP)

A

Port 143/TCP

Read, manage, and retrieve incoming messages. Newer service.

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12
Q

Simple Network Management Protocol (SNMP)

A

Port 161/162 (trap operation) UDP

Collect and organize information on devices and monitor status

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13
Q

Lightweight Directory Access Protocol (LDAP)

A

Port 389/TCP
Query information about network users and resources
Active Directory

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14
Q

HTTP Secure (HTTPS)

A

443

TCP

secure websites and services

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15
Q

Server Message Block (SMB)

A

Port 445/TCP

Implement Windows-compatible file and printer-sharing services on a local network

AKA Common Internet File System [CIFS]

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16
Q

Remote Desktop Protocol (RDP)

A

Port 3389/TCP

Graphical remote control of another client or server

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17
Q

Well Known Ports

A

0-1023

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18
Q

Registered Ports

A

1024-49151

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19
Q

Dynamic/Private Ports

A

49152-65535

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20
Q

POP3 (secured)

A

Port 995

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21
Q

IMAP (secured)

A

Port 993

22
Q

Trivial File Transfer Protocol (TFTP)

A

Port 69/UDP

File transfer connectionless protocol

23
Q

What is RAID?

A

Redundant Array of Independent Disks or
Inexpensive Disks

It is a solution that protects data against the risk of data loss

24
Q

What will happen if a RAID array loses a disk?

A

It will continue to operate but at a lower speed

25
Q

What frequency does the following wireless standard operate?

802.11a

A

5 GHz (Gigahertz)

26
Q

What frequency does the following wireless standard operate?

802.11b

A

2.4 GHz

27
Q

What frequency does the following wireless standard operate?

802.11g

A

2.4 GHz

28
Q

What frequency does the following wireless standard operate?

802.11n

A

2.4 GHz and 5 GHz

29
Q

At what frequency does wireless standard 802.11ac operate?

A

2.4 GHz and 5 GHz

30
Q

Name the frequency for wireless standard 802.11ax also known as wi-fi 6.

A

2.4 GHz and 5 GHz
May also go up to 6 GHz

31
Q

What does MIMO stand for and what does it do?

A

Multiple Input and Multiple Output. It uses multiple antennas to send and receive data then it could with a single antenna.

32
Q

What wireless standard incorporates MIMO?

A. 802.11a
B. 802.11n
C. 802.11g

A

B. 802.11n

33
Q

Which 2 wireless standards incorporates MU-MIMO (Multiple User Multiple Input Multiple Output)? Choose any that apply.

A. 802.11ax (wi-fi 6)
B. 802.11ac (wi-fi 5)
C. 802.11b
D. 802.11g

A

A and B

802.11ax (wi-fi 6)

802.11ac (wi-fi 5)

34
Q

Which wireless standard can go up to 6 GHz in frequency?

A. 802.11ax
B. 802.11ac
C. 802.11b
D. 802.11

A

A. 802.11ax

35
Q

What is the first step in CompTIA’s troubleshooting process?

A

Identify the problem

36
Q

What part of the CompTIA troubleshooting process contains performing internal or external research based on symptoms?

A

Step 2: Establish a theory of probable cause

37
Q

What is the third step in CompTIA’s troubleshooting process?

A

Test the theory

38
Q

What is step five of the CompTIA troubleshooting steps?

A

Verify full system functionality and if applicable implement preventive measures

39
Q

How many steps are there in the CompTIA troubleshooting steps?

A

6

40
Q

What sixth step of the CompTIA troubleshooting steps should be implemented?

A

Document the findings, actions, and outcomes

41
Q

What should be established as apart of step four of CompTIAs troubleshooting steps?

A

A plan of action to resolve the problem and implement a solution

42
Q

At what speed does the wireless standard 802.11a operate?

A. 54 Mbps
B. 5 GHz
C. 11 Mbps
D. 6.9 Gbps

A

A. 54 Mbps

43
Q

Which wireless standard incorporates speeds or bandwidth of 11 Mbps?

A

802.11b

44
Q

Which wireless standard uses a bandwidth of 9.6 Gbps?

A

802.11ax

45
Q

What two wireless standards incorporate a bandwidth of 54 Mbps?

A

802.11a and 802.11g

46
Q

The wireless standard 802.11n incorporates a bandwidth of (choose any that apply):

A. 5 GHz
B. 6.9 Gbps
C. 600 Mbps
D. 150 Mbps

A

C. 600 Mbps

D. 150 Mbps

47
Q

What color are ground power wires?

A

Black

48
Q

What voltage wire is the color yellow?

A

12 V

49
Q

What color voltage wire is 5V ?

A

Red

50
Q

3.3V is what color wire?

A. Black
B. Magenta
C. Green
D. Orange

A

D. Orange

51
Q

Red belongs to what voltage wire?

A

5 volts

CompTIA A+ 1101 (1 decks)

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