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Which of the following tools is used to analyze the files produced by several packet-capture
programs such as tcpdump, WinDump, Wireshark, and EtherPeek?
A.
tcptrace
B.
Nessus
C.
OpenVAS
D.
tcptraceroute
tcptrace
Suppose that you test an application for the SQL injection vulnerability. You know that the
backend database
is based on Microsoft SQL Server. In the login/password form, you enter the following
credentials:
Username: attack' or 1»1 -
Password: 123456
Based on the above credentials, which of the following SQL commands are you expecting
to be executed by the server, if there is indeed an SQL injection vulnerability?
A.
select * from Users where UserName ='attack or 1=1 -and UserPassword = '123456"
B.
select * from users wherefuserName = 'attack' or 1=1 --'and UserPassword = '123456'
C.
select * from Users where UserName ='attack" or 1=1 -and UserPassword = '123456'
D.
select * from users where UserName"'attack'or 1=1 - and UserPassword "'123456
select * from users where UserName"'attack'or 1=1 - and UserPassword "'123456
If you want to only scan fewer ports than the default scan using Nmap tool, which option
would you use?
A.
–r
B.
–F
C.
–P
D.
–sP
–F
What ports should be blocked on the firewall to prevent NetBIOS traffic from not coming
through the firewall if your network is comprised of Windows NT, 2000, and XP?
A.
110
B.
135
C.
139
D.
161
E.
445
F.
1024
135
139
445
George is a security professional working for iTech Solutions. He was tasked with securely
transferring sensitive data of the organization between industrial systems. In this process,
he used a short-range communication protocol based on the IEEE 203.15.4 standard. This
protocol is used in devices that transfer data infrequently at a low rate in a restricted area,
within a range of 10-100 m. What is the short-range wireless communication technology
George employed in the above scenario?
A.
MQTT
B.
LPWAN
C.
Zigbee
D.
NB-IOT
LPWAN
Explanation: Low-power WAN (LPWAN) could be a wireless wide space network
technology that interconnects low-bandwidth, powered devices with low bit rates over long
ranges.
Created for machine-to-machine (M2M) and net of things (IoT) networks, LPWANs operate
at a lower value with bigger power potency than ancient mobile networks. they’re
additionally ready to support a greater range of connected devices over a bigger space.
LPWANs will accommodate packet sizes from ten to 1,000 bytes at transmission speeds
up to two hundred Kbps. LPWAN’s long vary varies from a pair of kilometre to one,000 km,
counting on the technology.
Most LPWANs have a star wherever, like Wi-Fi, every end point connects on to common
central access points.
Types of LPWANsLPWAN isn’t one technology, however a bunch of assorted low-power,
wide space network technologies that take several shapes and forms. LPWANs will use
licenced or unauthorised frequencies and embody proprietary or open normal choices.
The proprietary, unauthorised Sigfox is one among the foremost wide deployed LPWANs
these days. Running over a public network within the 868 MHz or 902 MHz bands, the
ultra-narrowband technology solely permits one operator per country. whereas it will deliver
messages over distances of 30-50 kilometre in rural areas, 3-10 kilometre in urban settings
and up to one,000 kilometre in line-of-site applications, its packet size is restricted to a
hundred and fifty messages of twelve bytes per day. Downlink packets area unit smaller,
restricted to four messages of eight bytes per day. causation information back to endpoints
may also be vulnerable to interference.
Random part multiple access, or RPMA, could be a proprietary LPWAN from Ingenu INC.
tho’ it’s a shorter vary (up to fifty kilometre line of sight and with 5-10 kilometre nonline of
sight), it offers higher duplex communication than Sigfox. However, as a result of it runs
within the a pair of.4 gigahertz spectrum, it’s vulnerable to interference from Wi-Fi,
Bluetooth and physical structures. It additionally usually has higher power consumption
than different LPWAN choices.
The unauthorised LoRa, nominative and backed by the LoRa Alliance, transmits in many
sub-gigahertz frequencies, creating it less vulnerable to interference. A spinoff of chirp
unfold spectrum (CSS) modulation, LoRa permits users to outline packet size. whereas
open supply, the underlying transceiver chip accustomed implement LoRa is barely offered
from Semtech Corporation, the corporate behind the technology. LoRaWAN is that the
media access management (MAC) layer protocol that manages communication between
LPWAN devices and gateways.
Weightless SIG has developed 3 LPWAN standards: The unifacial weightless-N, duplex
Weightless-P and Weightless-W, that is additionally duplex and runs off of unused TV
spectrum. Weightless-N and Weightless-P area unit usually a lot of in style choices
because of Weightless-W’s shorter battery life. Weightless-N and Weightless-P run within
the sub-1 gigahertz unauthorised spectrum however additionally support licenced spectrum
operation mistreatment twelve.5 kilohertz narrowband technology.
Narrowband-IoT (NB-IoT) and LTE-M area unit each third Generation Partnership Project
(3GPP) standards that treat the licenced spectrum. whereas they need similar performance
to different standards, they treat existing cellular infrastructure, permitting service suppliers
to quickly add cellular IoT property to their service portfolios.
NB-IoT, additionally referred to as CAT-NB1, operates on existing LTE and international
System for Mobile (GSM) infrastructure. It offers transmission and downlink rates of around
two hundred Kbps, mistreatment solely two hundred kilohertz of accessible information
measure.
LTE-M, additionally referred to as CAT-M1, offers higher information measure than NB-IoT,
and therefore the highest information measure of any LPWAN technology.
Some vendors, as well as Orange and SK medium, area unit deploying each licenced and
unauthorised technologies to capture each markets.
GreenOFDM from GreenWaves Technologies
DASH7 from hayrick Technologies INC.
Symphony Link from Link Labs INC.
ThingPark Wireless from Actility
Ultra slim Band from numerous corporations as well as Telensa, Nwave and
Sigfox
WAVIoT
Other LPWAN technologies include:
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