My Weaknesses Flashcards
What is a crossover cable for?
Connecting two of the same device
What is ECC DRAM?
Error correction RAM.
What is FQDN?
A full domain and host address, 225 characters.
What is an example of IPV6?
:: and 128 characters.
An IPv6 address is a 128-bit alphanumeric value that identifies an endpoint device in an Internet Protocol Version 6 (IPv6) network.
Eight groups of four hexadecimal digits, each group representing 16 bits The groups are separated by colons (:). An example of an IPv6 address is: 2001:0db8:85a3:0000:0000:8a2e:0370:7334.
Laster Printing Steps?
The three types of fiber cable?
SC, ST, LC.
Two varieties of twisted pair are?
Unshielded: UTP
Shielded: STP
What is RJ-11 used for?
Widely used in analog telephony to connect the phone instrument and the cable. Now it is mostly used to connect to modems and is still used in landlines. It is a 4-slot connector and has six pins, which means you cannot fit it into an RJ45 slot.
What is RJ-45 used for?
They are collectively known as Ethernet or network communication cables and are used to achieve high-speed data transfer connections.
Eight wires; used with xBaseT networks—100BaseT, 1000BaseT, and so forth).
What is coaxial used for?
Television cable.
Cat 5 speed?
100 mbps
Cat 5e speed?
1000mbps
Cat 6 speed?
1-6 gbps
Cat 6a speed?
10 gbps
Cat 7 speed?
10 gbps
Cat 8 speed?
40 gbps
USB 1 speed?
12 mbps
USB 2 speed?
480 mbps
USB 3 speed?
5 gbps
USB 3.1 speed?
10 gbps
Thunderbolt 3/4 speed?
40 gbps
What is SATA?
SATA is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives.
What is eSATA?
For external HDD’s and stuff.
What is SATA 1 speed?
150 mbps
What is SATA 2 speed?
300 mbps
What is SATA 3 speed?
600 mbps
What is SATA 3.2 speed?
2 gbps
What is eSATA speed?
6 gbps
What is an F type?
Coaxial cable type cable
RG-59 connector
What is Molex used for?
3 or 4 pin connectors.
Providing power to the motherboard, fans, floppy disk drive, CD/DVD drive, video card, some older hard drive models, and more
DDR4 DIMM pins?
284
DDR3 DIMM pins?
240
DDR2 DIMM pins?
240
DDR DIMM pins?
184
DDR4 SODIMM pins?
256
DDR3 SODIMM pins?
204
DDR1+2 SODIMM pins?
200
What is NVMe?
NVMe or Non-Volatile Memory Express is a super-fast way to access non-volatile memory. It can be around 2-7x faster than SATA SSDs.
A SSD.
NVMe is commonly used for solid-state storage, main memory, cache memory or backup memory.
Expensive.
What is PCIe?
A serial expansion bus standard for connecting a computer to one or more peripheral devices.
Graphics cards etc.
What is M.2?
M.2 is a form factor for SSDs (solid-state drives)
Thin gaming laptops (opens in new tab)are increasingly using M.2 SSDs because they take up less room than 2.5-inch SSDs or hard drives.
M.2 SSDs go up to 2TB in storage size.
To use you need special motherboard.
What is M.2?
M.2 is a form factor for SSDs (solid-state drives)
Thin gaming laptops (opens in new tab)are increasingly using M.2 SSDs because they take up less room than 2.5-inch SSDs or hard drives.
M.2 SSDs go up to 2TB in storage size.
To use you need special motherboard.
What is Trusted Platform Module (TPM)?
The TPM is a cryptographic module that enhances computer security and privacy.
What is ARM?
ARM chips are 32-bit and 64-bit RISC-based CPUs that are known for their low cost but primarily for their low power requirements (see RISC).
Popular is small devices like phones because ARM uses low power.
What is a modular power supply?
A modular power supply is a type of unit that gets its name from the fact that it has several removable cables. The “modules” in question are the various parts of the PSU that can be added or removed as needed.
What is redundant power supply?
An electrical system that has been designed to feature two or more of the same power supply.
What are the printer interface types?
Parallel – It was the most popular way of communicating with PC. It consists of a male DB-25 connector that connects to PC and a male 36-pin Centronics connector that connects to the printer. Most of the cables were less than 10 feet long.
Universal Serial Bus (USB) – It is the most popular interface today. It gives a higher transfer rate and it is automatically recognized on PC.
Network – It allows printers to have a network interface card (NIC) and ROM-based software to communicate with network attached servers and PC. It can be wired or wireless network card.
Infrared – Many laser printers have infrared transmitter/receivers to communicate with the infrared ports on many handhelds and PDA so that user of a PDA, handheld, or laptop can print to that printer by pointing the device at the printer and initiating the print process.
SCSI – Few printers use SCSI interfaces. It has benefit of multiple devices on single SCSI connection, simple to implement and large throughput. But have now become obsolete.
IEEE 1394 Firewire – Apple developed it and this interface supports throughput of 800MBps. High end graphics and typesetting use it.
Wireless – It is of many different kinds as it uses IEEE 802.11 wireless networking or Bluetooth so that it is possible for people to roam around an office and still able to print. Printers have built-in 802.11 interfaces or Bluetooth capability. The data to print is transmitted wirelessly through the air using radio waves and is received by the device.
What are the laser printing steps?
Processing.
Charging.
Exposing.
Developing.
Transferring.
Fusing.
Cleaning.
What are the inkjet printing steps?
The printer’s laser projects your print onto a drum.
A drum then uses static electricity to attract the dry toner to the drum’s cylinder.
The drum then rolls the toner onto the paper to create your print.
The toner powder is melted and pressed onto the paper with heat from the fuser as it goes through a set of rollers.
Your print comes out of the printer.
How does a laser printer work?
The printers laser beams your print onto a metal drum. The drum uses static electricity to attract powdered toner to the drums cylinder. The drum rolls the toner onto the paper in the form of your print. The toner is melted & pressed onto the paper by heat from a fuser as it passes through its rollers.
Volts +5 DC and +24 DC.
How does an inkjet printer work?
In contrast to laser printing technology, inkjet printers use pigmented liquid ink which is directed into the print head, this then sprays droplets of ink through tiny nozzles onto the page. These microscopic droplets are precisely arranged to recreate images or text.
What are the three types of fibre cable?
SC, ST, LC.
What is Zigbee?
A home automation wireless protocol.
What is DaaS?
Desktop as a service. Often paired with VDI, virtual desktop interfaces.
Desktop as a Service (DaaS) is a cloud computing offering where a service provider delivers virtual desktops to end users over the Internet, licensed.
What is AGP?
Accelerated Graphics Port (AGP) is a parallel expansion card standard, designed for attaching a video card to a computer system to assist in the acceleration of 3D computer graphics.
Difference between refresh and frame rate?
Refresh rate is defined as how many times your monitor (or whatever other display) can refresh the image on-screen. FPS, or frames per second, is actually about how many frames your graphics card can send out as frames to the display every second.
What can cause ghosting on a printer?
Ghosting is often caused by a malfunctioning imaging drum unit. When a drum unit comes to the end of its useable life cycle, it may not discharge properly, leaving behind faint traces of the previous printing job.
What is ::1?
::1 is the loopback address in IPv6. Think of it as the IPv6 version of 127.0. 0.1 .
What does LC connector look like?
A double/duplex pointy connector, both connected together like lovers.
What does the ST connector look like?
A single lonely pointy connector.
What does SC look like?
Square. Stick and click, short pointy connector.
What does SMB do?
SMB provides client applications with a secure and controlled method for opening, reading, moving, creating and updating files on remote servers.
Port 445.
What is RG-59 used for?
Coaxial.
Medium-length connection cables.
Analog CCTV applications and other audio video applications.
What is RG-11 used for?
Coaxial.
RG11 cables are thick cables that are used for special and long-distance signalling.
What is ARP used for?
Address Resolution Protocol (ARP) is a protocol or procedure that connects an ever-changing Internet Protocol (IP) address to a fixed physical machine address, also known as a media access control (MAC) address, in a local-area network (LAN).
What is MX used for?
MX mail refers to the Mail Exchange record, which specifies the mail server(s) responsible for receiving emails for a domain. It tells email servers where to send emails for a specific domain.
What is port flapping?
Port flapping is when a network port rapidly switches between being connected and disconnected. It can cause network disruptions and connectivity problems. Troubleshooting involves checking cables, and configurations, and resolving any underlying issues causing the instability.
What is APIPA?
APIPA (Automatic Private IP Addressing) is a feature that automatically assigns a unique IP address to a device when it can’t connect to a DHCP server. It helps devices communicate on a local network without a central IP address assignment.
169.254.0.0
to 169.254.255.255
APIPA is primarily used in small local networks, such as home networks or small office environments, where a DHCP server may not be available or properly configured. It provides a fallback mechanism for devices to communicate within the local network even without a centrally assigned IP address.
What are SaaS, PaaS, IaaS and DaaS?
IaaS (Infrastructure as a Service) is renting virtualized computing resources, SaaS (Software as a Service) is accessing software applications over the internet, DaaS (Desktop as a Service) is accessing virtual desktop environments, and PaaS (Platform as a Service) is a platform for developing and deploying applications.
What is EMI and RFI?
EMI (Electromagnetic Interference) is disruption caused by electromagnetic radiation from external sources that affects electronic devices.
RFI (Radio Frequency Interference) is interference caused by radio frequency signals from sources like radios, cell phones, or wireless networks, affecting the performance of electronic devices.
Differences between IMAP4 and POP3?
IMAP4 stores emails on the mail server and allows you to access and manage them from multiple devices, while POP3 downloads emails to your device and typically deletes them from the server.
IMAP4 provides more advanced email management options and offline access to previously synchronized emails, while POP3 is more limited in terms of management and requires an active internet connection to download new emails.
What is SMB for?
The SMB port, also known as Port 445, is a network port used for the Server Message Block (SMB) protocol. It is primarily used for file sharing and printer sharing between computers on a network, particularly in Windows environments.
What is SNMP for?
161/162.
SNMP is a protocol for managing and monitoring network devices and systems.
It allows network administrators to collect information, monitor network performance, and manage devices remotely.
With SNMP, administrators can monitor various aspects of network devices, such as CPU usage, memory utilization, network traffic, and more.
FTP 20 vs FTP 21?
Port 20 is used for file transfers.
Port 21 is used for the connection.
What is class A IP’s?
1 to 127.
0.0. 0.0 to 127.255. 255.255.
Large networks.
What are class B IP’s?
128 to 191.
128.0. 0.0 to 191.255. 255.255.
This class is for medium networks and has 16 bits for networks and 16 bits for hosts.
What are class C IP’s?
192-223.
Very small LANs and networks.
Raid 0 uses?
RAID 0: Striping - Data is striped across multiple drives without redundancy. It enhances performance and increases storage capacity but offers no data protection.
2+ drives.
Raid 1 uses?
RAID 1: Mirroring - Data is duplicated across two drives for redundancy. Provides data protection but halves the total storage capacity.
2 drives.
Raid 5 uses?
RAID 5: Striping with Parity - Data is striped across multiple drives, with parity information distributed among the drives. Offers both performance and data protection.
3 drives.
What is Raid 10?
RAID 10: Mirroring and Striping - Data is mirrored across pairs of drives and then striped across those mirrored pairs. Combines the benefits of RAID 1 and RAID 0 for both performance and redundancy. Requires a minimum of four drives.
4+ drives.
Colours of T568A?
Apples.
Green-White, Green, Orange-White, Blue, Blue-White, Orange, Brown-White, Brown.
Colours of T568B?
Banana.
Orange-White, Orange, Green-White, Blue, Blue-White, Green, Brown-White, Brown.
What is DKIM used for?
DKIM (DomainKeys Identified Mail): Email authentication method that adds a digital signature to outgoing messages. It verifies the integrity and authenticity of the email, ensuring it hasn’t been tampered with during transit.
What is SPF used for?
SPF (Sender Policy Framework): Email authentication framework that specifies authorized servers to send emails on behalf of a domain.
It helps prevent email spoofing and ensures that incoming messages are from legitimate sources.
What is DMARC used for?
DMARC (Domain-based Message Authentication, Reporting, and Conformance): Email authentication protocol that combines DKIM and SPF.
It allows domain owners to set policies for email handling, including how to handle failed authentication, and provides reporting on email activity for better visibility and control.
