# Question Your answer

1 One of the benefits of certified KNX training is the possibility to be

registered for KNX partnership True
2 KNX offers customers increased safety True
3 It is essential that if manufacturers want to develop KNX products, they must
buy their system components (chipsets) from Siemens False
4 Visualisation programs can only be obtained from KNX Association False
5 A central function influencing many application fields in a building
(lighting, blinds, heating/cooling, …) can be easily implemented with KNX True
6 The KNX Association is an association of manufacturers promoting KNX True
7 All KNX Products are tested by KNX test engineers at the headquarters of KNX
Association. True
8 KNX S-Mode devices are configured automatically when plugging them in False
9 The KNX trademark only symbolises that the product was developed by a KNX
member Not answered yet
10 One of the objectives of the KNX Association is to implement marketing
activities True
11 Visualisation programs can be obtained from independent software
manufacturers True
12 One of the benefits of certified KNX training is a recognised qualification
after passing a final exam True
13 One of the objectives of the KNX Association is the support of world-wide
maintenance centres for faulty KNX devices Not answered yet
14 The programming button on a KNX product or the BCU has to be pressed to
allocate the group addresses during the commissioning stage. True
15 KNX devices are supplied solely from a separate supply because they use the
bus only for data transmission True
16 It is worth promoting to customers the benefits of KNX having multiple
manufacturers and applications that work seamlessly together True
17 The PEI (Physical External Interface) is used for the connection of the bus
cable True
18 The function of a KNX sensor is to check the correct bus voltage False
19 Depending on the power consumption of the application module, KNX TP devices
can either be supplied solely from the bus or also from an additional power source
True
20 2 cores of the KNX TP bus cable are required for the transmission of
telegrams and in most cases, to supply the bus devices with power True
21 A function of a KNX actuator is to program other KNX devices False
22 The version of the system software included in a bus device is identified by
its “mask version" or "device descriptor type 0". Not answered yet
23 A working KNX sensor or actuator contains a bus coupling unit, an application
module and an application program True
24 Compared to system 1 devices, system 2 and system 7 devices have the
advantage that they can also use application programs from other manufacturers
True
25 Compared to system 1 devices, system 2 and system 7 devices have the
advantage that they can protect the application program from sabotage attempts
through the use of an access key False
26 The programming button on a BCU has to be pressed to reset a "crashed" bus
coupling unit. Not answered yet
27 The Write flag enables the object value to be read from the bus True
28 The Read flag should not be set in group objects for drive control to ensure
that the actuators can also be addressed by sensors from other manufacturers Not
answered yet
29 In order to be able to read the value of a group object via the bus, its read
flag must be set Not answered yet
30 Group objects of different sizes (bit widths) can communicate with each other
via the bus without any problem False
31 If the permitted cable length in a KNX-TP installation is exceeded,
irreproducible data transmission problems can be expected True
32 Only when the Communication flag is set, will the group object be able to
communicate with the bus Not answered yet
33 1 byte group objects are used for relative dimming False
34 Main groups 14 and 15 cannot be used False
35 The target address in a telegram could be a group address or an individual
address Not answered yet
36 The signal transmission is noise-free in KNX TP due to the high level of
sensitivity when receiving False
37 The permitted length of the bus cable between two KNX TP devices is between
10 m and 1000 m, dependent on the sending capacity Not answered yet
38 Group objects have to be linked by means of an individual address True
39 How many individual addresses a 4-output actuator has, depends on the project
design False
40 The protective earth connection to the TP central power supply unit is only
required if the TP power supply is installed in a water-tight housing of protection
type IP 68 False
41 Some chokes/power supply units have a reset switch by means of which it is
possible to short-circuit the bus line. This will cause the connected bus devices
to execute a reset Not answered yet
42 Compliance with the permitted cable lengths needs to have been checked by the
end of a TP installation Not answered yet
43 A maximum of 256 bus devices may be used in a line with two power supply
units. True
44 The red/black core pair is used to supply any low-voltage devices True
45 TP push buttons and 230 V sockets can be installed under a common cover,
provided that the socket is protected from further contact if the common cover is
removed and only if the manufacturer explicitly states that this combination is
permitted False
46 After having finalised the KNX project, the building owner is required to
accept at least a one year maintenance contract on the project. False
47 The information about the minimum distance between the power supply units in
a TP line segment shall be gathered from the product specifications Not answered
yet
48 The TP cores must be laid at a distance of 20 cm from the 230 V non-sheathed
cable Not answered yet
49 A SELV network may be earthed False
50 When the maximum distance per line segment of 1000 m is exceeded, proper
signalling can only be ensured when using a terminating resistor False
51 The design of the standardised bus connector allows the disconnection of a
device from the bus without interrupting the bus line Not answered yet
52 It is possible to install two power supply units both with an output current
of both 320 mA in one line True
53 A TP area can consist of maximum 4 lines and 11 main lines False
54 The difference between a TP line coupler and a line repeater is the price
False
55 A bus power down in only one line has an effect on the entire installation
when this power down last longer than five minutes Not answered yet
56 A TP installation can consist of maximum 256 areas False
57 TP areas are connected by the main line of the first area Not answered yet
58 A TP main line within an area can contain a maximum of 256 bus devices
including the mounted line couplers. True
59 A KNX media coupler connects KNX with audio sources. False
60 The smallest unit in the TP topology is a power supply unitNot answered yet
61 6 power supply units and 5 line couplers are required in a TP area with five
lines and one main line, so that each line can function independently False
62 The routing counter has the value 7 in telegrams within lines False
63 A TP installation can consist of maximum 4 areas False
64 A TP main line within an area can contain a maximum of 256 bus devices in
addition to the mounted backbone couplers. True
65 A maximum of 64 sensors, actuators, line and backbone couplers can be
connected to a TP main line in an installation before 2018.Not answered yet
66 A knxprod file can contain product data of more than one manufacturer True
67 When installing ETS, a directory (Product Store) will be created including
the product data of all manufacturers. Not answered yet
68 The proper functioning of a sensor in a KNX installation can be checked by
comparing the filter tables Not answered yet
69 In order to reduce bus load in a functioning installation, the line couplers'
filter tables should be loaded True
70 The priorities "Low", "High", "Alarm" and "System" can be assigned to a group
object in ETS True
71 It is not possible to trace group telegrams of a device with the source
address 01.01.XXX on the main line of area 01 when this is a telegram within the
line and the group addresses are not included in the filter table of the line
coupler 01.01.000 Not answered yet
72 ETS projects are transferred from one PC to another by copying the file
directories. True
73 In some countries, ETS licenses can be purchased via local ETS distributors
False
74 Using ETS Diagnostic tools, the individual address of a device in programming
mode can be identified True
75 When a device is selected, the certification status of the attributed
application program will be visible in the tab ‘Information’/'Application' under
“Properties” Not answered yet
76 The sending group address of a group object is fixed by the application and
cannot be changed via ETS False
77 Some changes to the Settings menu only take effect after restarting ETS
False
78 When adding a group address to an already downloaded device, it is possible
to only download this extra group address and leave the other application data
unchanged True
79 A standard KNX device that is fully programmed contains an individual
address, an application, parameters and the group addressesTrue
80 KNXnet/IP can be used for communication between the current ETS and the bus
True
81 Partial download should not be done because of the high bus load False
82 After a bus device has been unloaded, it can be programmed again as normal
True
83 The driver for the USB interface has to be re-installed before each
programming session False
84 Partial download is useful when only parameters/ group addresses have to be
downloaded True
85 Programming a KNX TP installation can be done without powerFalse
86 Programming a KNX TP installation can only be realised when all bus devices
are connected False
87 Partial download is only possible via the USB interface False
88 Programming a KNX TP installation can be done in advance, e.g. in a workshop
by connecting a single bus device to a small installation consisting of a power
supply and a choke True
89 After a bus device has been unloaded, the bus device has to be sent back to
the manufacturer False
90 Partial download is possible via the USB interface True
91 The programming of a KNX TP installation can be changed later on at any time
by downloading the application True
92 The driver for the USB interface has to be installed via a separate
installation program on the commissioning PC False
93 After a bus device has been unloaded, the bus device is automatically deleted
from the ETS building view False
94 The driver for the USB interface will be automatically installed when
connecting it to the commissioning PC True
95 After a bus device has been unloaded, it cannot be programmed anymore with
the previously programmed application False
96 The configuration of KNX RF E-Mode devices is different from that of KNX RF
S-Mode devices Not answered yet
97 RF signals pass through walls and other obstructions, which do not influence
the reception capabilities of KNX RF receivers False
98 It is not allowed to use a repeater in KNX RF installationsNot answered yet
99 The modulation used in KNX RF is Amplitude Shift Keying False
100 A multi-channel KNX RF device has the possibility to send information over
alternative channels, should one of the fast or slow channels be blocked. Not
answered yet