A+ 1101 110

Question 1

File Transfer Protocol (FTP)—Data connection

File Transfer Protocol (FTP)—Data connection

Answer 1

20 TCP

Question 2

File Transfer Protocol (FTP)—Control connection

File Transfer Protocol (FTP)—Control connection

Answer 2

21 TCP

Question 3

Secure Shell (SSH)

Secure Shell (SSH)

Answer 3

22 TCP

Question 4

Telnet

Answer 4

23 TCP

Question 5

Simple Mail Transfer Protocol (SMTP)

Answer 5

25 TCP

Question 6

Domain Name System (DNS)

Answer 6

53 TCP/UDP

Question 7

Dynamic Host Configuration Protocol (DHCP) Server

Answer 7

67 UDP

Question 8

DHCP Client

Answer 8

68 UDP

Question 9

HyperText Transfer Protocol (HTTP)

Answer 9

80 TCP

Question 10

Post Office Protocol (POP)

Answer 10

110 TCP

Question 11

NetBIOS over TCP/IP

Answer 11

137-139 UDP/TCP

Question 12

Internet Mail Access Protocol (IMAP)

Answer 12

143 TCP

Question 13

Simple Network Management Protocol (SNMP)

Answer 13

161 UDP

Question 14

SNMP trap operation

Answer 14

162 UDP

Question 14

Lightweight Directory Access Protocol (LDAP)

Answer 14

389 TCP

Question 15

HTTP Secure (HTTPS)

Answer 15

443 TCP

Question 16

Server Message Block (SMB)

Answer 16

445 TCP

Question 17

Remote Desktop Protocol (RDP)

Answer 17

3389 TCP

Question 18

How much can a CD store?

Answer 18

A CD can store up to 700 MB

Question 19

How much can a DVD store?

Answer 19

A DVD can store 4.7 GB for a single-layer disc or 8.5 GB for a dual-layer disc

Question 20

How much can a Blu-Ray store?

Answer 20

A Blu-ray disc can store up to 25 GB for a single-layer disc or 50 GB for a dual-layer disc.

Question 21

What is the comptia testing methodology? (6 steps)

Answer 21

(1) Identify the problem. (2) Establish a theory of probable cause (question the obvious). (3) Test the theory to determine the cause. (4) Establish a plan of action to resolve the problem and then implement the solution. (5) Verify full system functionality and, if applicable, implement preventative measures. (6) Document findings, actions, and outcomes.

Question 22

802.11a

Answer 22

5Gz, 54Mbps

Question 23

802.11b

Answer 23

2.4Gz, 11Mbps

Question 24

802.11g

Answer 24

2.4Gz, 54Mb, backward compat with 802.11b

Question 25

802.11ac

Answer 25

(Wifi 5) 5Ghz, 160Whz Channel, Signal Modulation, 8x MU-MIMO, 867Mbps, 7Gbps total

Question 25

802.11n

Answer 25

(Wifi 4) both Ghz, 40Mhz Channel, 150Mbps, 600Mbps total, 4x MIMO

Question 26

802.11ax

Answer 26

(Wifi 6) Both Ghz, multiple channel widths, OFDMA, 8x MU MIMO 1.2Gbps, 9.6Gps Total

Question 27

What is the Ethernet T568A color order?

Answer 27

GW, G, OW, Bu, BuW, O, BrW, Br

Question 28

What is the Ethernet T568B color order?

Answer 28

OW, O, GW, Bu, BuW, G, BrW, BR

Question 29

USB 1.1

Answer 29

Low: 1.5 Mbps, 3 meter. Full: 12 Mbps, 5 meter

Question 30

USB 2.0

Answer 30

480Mbps, 5 meter

Question 31

USB 3.0

Answer 31

USB 3.1 Gen 1, USB 3.2 Gen 1, 5Gbps, ~3 meter

Question 32

USB 3.1 Gen 2

Answer 32

USB 3.2 Gen 2, 10Gbps

Question 33

USB 3.2 Gen1x2

Answer 33

10Gbps, two gen 1 lanes

Question 34

USB 3.2 Gen2x2

Answer 34

20Gbps

Question 35

Thunderbolt v1

Answer 35

20Gbps, two channel, Mini DP

Question 36

Thunderbolt v2

Answer 36

20Gbps Aggregated Mini DP

Question 37

Thunderbolt v3

Answer 37

40Gbps, USBC

Question 38

802.3af

Answer 38

allows powered devices to draw up to about 13 W. 350mA@48V,limited to 15.4 W, but voltage drop over the maximum 100m (328 feet) of cable results in usable power around 13 W.

Question 39

802.3at

Answer 39

(PoE+)** draw up to about 25 W, maximum current of 600 mA.

Question 40

Laser print process

Answer 40

Processing, Charging, Exposing, Developing, Transferring, Fusing, Cleaning

Question 40

-802.3bt

Answer 40

(PoE++ or 4PPoE)** up to about 51 W (Type 3) or 73 W (Type 4) usable power