WorksheetsQuiz Jaringan Komputer
Total questions: 32
Worksheet time: 16mins
Which action does not affect the quality of optical fiber?
Scattering
Cutting
Bending
Splicing
Which transmission medium has a frequency of 2-40 GHz?
Infrared
Radio broadcast
Optical fiber
Microwave
Which statement is correct regarding a hub?
When inactive, it can function as a repeater
Works at layer 2 OSI
Connects different physical media
Acts as a concentrator
Which statement is correct regarding a bridge?
Functions at layer 1 OSI
Functions at layer 2 OSI
Connects different physical media
Can filter traffic
The following actions can be performed by a router, except:
Dividing a large network segment into smaller segments
Connecting different physical media
Isolating traffic
Connecting different topology network segments
A switch operates at layer 2 OSI.
True
False
The following does not include the characteristics of coaxial cable:
Consists of 2 conductors
Diameter 1-2.5 cm
Spectrum can reach 5000 MHz
Distance between repeaters 1 km
The UHF band has a frequency range of:
3-30 MHz
30-300 MHz
300-3000 MHz
3-30 GHz
The main parameters of QoS are:
Throughput, delay, jitter, reliability
Confidentiality, integrity, availability
Bandwidth, signal-to-noise ratio, capacity
Propagation time, transmission time, bit rate
Throughput is the average rate at which a packet is successfully sent over a communication channel.
True
False
When does packet loss occur in a network?
When there is no traffic on the router
When traffic on the router is very dense
When the number of hops is too few
When the channel bandwidth is very small
Jitter is the variation in delay.
True
False
The device that connects two networks with different segments is:
Switch
Hub
Router
Repeater
A repeater cannot be used to extend the signal range.
True
False
The super high frequency band has a frequency range of:
3-30 MHz
30-300 MHz
300-3000 MHz
3-30 GHz
The tool used to control the amount of data sent to avoid congestion is:
Sliding windows
Parity
CRC
Ch
What is the frequency range of 3-30 GHz?
3-30 MHz
30-300 MHz
300-3000 MHz
3-30 GHz
What is the tool to control the amount of data sent to avoid congestion?
Sliding windows
Parity
CRC
Checksum
There are two types of links, physical link and logical link.
True
False
Which of the following is NOT a task of the data link layer?
Regulating media access
Controlling the amount of data sent to avoid congestion
Error control
Data compression
There are two sublayers in the data link layer: logical link control and media access control.
True
False
The media access control sublayer is responsible for flow control in the data link.
True
False
To detect errors, the parity method uses the following step:
Adding 1 bit
Adding 2 bits
Calculating XOR for the number of data bits
Binary division
What is the CRC method used in LAN packets?
CRC-8
CRC-16
CRC-32
CRC-64
If the received data is correct, the receiver will send feedback:
ACK
ARQ
NAK
YES
If the received data is incorrect, the receiver will send feedback:
ACK
ARQ
NAK
YES
The sender will not resend the packet if:
Receives NAK feedback
Times out
Receives feedback that is not understood
Receives ACK feedback
Only resending the erroneous packet is feedback ARQ.
Idle RQ
Selective Repeat
Go Back N
Repeat
The efficiency of ARQ selective repeat is higher than idle RQ.
True
False
In the Backward Error Control method, packet transmission will not be repeated if the received packet is incorrect.
True
False
Forward Error Control can solve the problem of using BEC because:
Causes delay
Packets are received in order
The receiver can correct data errors by itself
Can be used for low-quality channels
In the checksum method, data is divided into groups of:
4 bits
8 bits
16 bits
32 bits
