In a ISA type system, what DMA channel was always assigned to the system board?
- 3
- 0
- 7
- 5
Thursday, August 12, 2021
Friday, July 30, 2021
What international standard describes requirements for an information security management system (ISMS)?
What international standard describes requirements for an information security management system (ISMS)?
- GDPR
- ISO/IEC 27001
- ISO/IEC 27000
- ISO/IEC 27002
EXPLANATION
"Standards aren’t the same as regulations and following a standard doesn’t guarantee that you’re within the relevant laws."
GDPR is a data privacy law/regulation
created by the European Union (EU). It has an "extra-territorial
effect" to protect data belonging to EU citizens and residents. This not
only applies to EU-based organizations but also that in another region,
which target or collect data related to people from European Economic
Area (EEA).
ISO 27000 has an overview of ISMS and it contains terms and definitions.
ISO 27002 has guidelines and it's optional. However, there are useful tips related to the implementation of controls and requirements, which are provided in ISO 27001.
SOURCE
Thursday, July 29, 2021
On an RPM based Linux server what command would you use to update software from the command line
On an RPM based Linux server what command would you use to update software from the command line
- apt
- nano
- sup
- yum
EXPLANATION
YUM allows automatic updates, package and dependency management, on
RPM-based distributions. Like the Advanced Package Tool (APT) from
Debian, YUM works with software repositories (collections of packages),
which can be accessed locally[4] or over a network connection.
SOURCE
What is commonly used to convert DHCP broadcast messages to unicast messages and forward them to DHCP servers on a separate subnet?
What is commonly used to convert DHCP broadcast messages to unicast messages and forward them to DHCP servers on a separate subnet?
- DHCP Relay Agent
- DHCP Reservation
- DHCP Filter
- DHCP Forwarder
EXPLANATION
Generally, DHCP messages are broadcasted. So, in order for the messages to be exchanged between a DHCP client (PC) and DHCP server, both the client and server have to reside on the same subnet. That is because routers do not forward any broadcast IP packet (i.e. one with a destination MAC address of FF:FF:FF:FF:FF:FF and a destination IP address of 255.255.255.255) to other interfaces. Thus, a broadcast DHCP packet sent by a DHCP client cannot be delivered to DHCP server(s) on different subnet(s) through a router.
To address this problem, the concept of a DHCP relay agent has long been adopted. The core function of this DHCP relay agent is to convert broadcast DHCP packets into unicast messages and then forward them to DHCP servers
SOURCE
Tuesday, July 27, 2021
Which version of Windows introduced the Metro user interface, which can be used on desktops, laptops, mobile phones, and tablets?
Which version of Windows introduced the Metro user interface, which can be used on desktops, laptops, mobile phones, and tablets?
- Windows XP
- Windows 8
- Windows 7
- Windows Vista
EXPLANATION
Metro is a new “design language” of Microsoft. A new concept aimed at changing the logic of construction and work of the operating system and applications, as well as the scheme of interaction between the user and the electronic device.
The basic principles of construction and appearance were largely borrowed from the information systems of transport nodes. The inscriptions and graphical elements in these systems are subject to quite specific requirements: very high readability and visual perceptibility of information, absence of unnecessary distractions, clean and clear view of all external elements.
SOURCE
https://designmodo.com/metro-ui/Which category cabling is theoretically the fastest and recommended for use in VOIP where throughput of greater than 100Mbps is desired?
Which category cabling is theoretically the fastest and recommended for use in VOIP where throughput of greater than 100Mbps is desired?
- CAT-5
- CAT-3
- CAT-5a
- CAT-6
EXPLANATION
CAT-6 cabling should be used where throughput of greater than 100Mbps is desired.
SOURCE
Which of the following is the default port used for POP3 SSL Traffic?
Which of the following is the default port used for POP3 SSL Traffic?
- 110
- 25
- 995
- 587
EXPLANATION
POP uses port 110, but SSL/TLS encrypted POP uses port 995.
