WorksheetsTransport Layer and Application Layer Quiz1
Total questions: 30
Worksheet time: 15mins
Which of the following is a primary function of the transport layer?
Routing
Flow Control
Framing
Encryption
What is multiplexing in the transport layer?
Combining multiple signals into one
Assigning IP addresses
Dividing a message into small packets
Encrypting messages
Demultiplexing in the transport layer refers to:
Combining multiple messages into one
Separating data streams based on port numbers
Converting packets into frames
Addressing errors in packets
Which of the following is not a characteristic of UDP?
Connectionless communication
Low overhead
Guaranteed delivery
No congestion control
TCP uses which mechanism to ensure reliable data delivery?
Checksum
Three-way handshake
Encryption
None of the above
Which layer is responsible for congestion control in TCP/IP?
Application layer
Network layer
Transport layer
Physical layer
What is a socket?
A process that routes packets
An endpoint of communication between two systems
A device used for data storage
None of the above
The primary purpose of DNS is to:
Encrypt messages for secure transmission
Convert domain names to IP addresses
Provide error correction
Ensure reliable data transmission
Which port does SMTP use for sending emails?
80
21
25
53
FTP operates on which port by default?
23
25
20 and 21
80
Which of the following is an example of an application layer protocol?
TCP
UDP
HTTP
ICMP
The World Wide Web (WWW) was invented by:
Bill Gates
Tim Berners-Lee
Steve Jobs
Vint Cerf
Network security aims to protect against:
Data modification
Unauthorized access
Interruption of service
All of the above
Which of the following is an encryption technique?
Checksum
Cryptography
Routing
Address resolution
Symmetric encryption uses:
One key for encryption and another for decryption
A single key for both encryption and decryption
No keys at all
Multiple keys for decryption only
An example of a symmetric encryption algorithm is:
RSA
DES
Diffie-Hellman
MD5
Public key encryption is also known as:
Secret key encryption
Asymmetric encryption
Hashing
Digital signaling
Which algorithm is commonly used for public key encryption?
AES
RSA
SHA-256
Blowfish
Which key is used for encryption in public key cryptography?
Private key
Shared key
Public key
Secret key
The Secure Sockets Layer (SSL) is used for:
Data compression
Secure communication over the internet
Address translation
Load balancing
Bluetooth operates on which frequency band?
900 MHz
2.4 GHz
5 GHz
1.5 GHz
Which Bluetooth topology allows multiple devices to connect in a small network?
Star topology
Piconet
Mesh network
Bus topology
The master device in a Bluetooth network can connect to how many active slave devices?
3
5
7
10
Which Bluetooth version introduced Low Energy (LE) mode?
Bluetooth 2.1
Bluetooth 3.0
Bluetooth 4.0
Bluetooth 5.0
What is the primary advantage of Bluetooth Low Energy (BLE)?
Faster speed
Increased range
Lower power consumption
Stronger encryption
Which of the following Bluetooth profiles is used for audio transmission?
OBEX
A2DP
HID
PAN
Which security mechanism is used in Bluetooth?
WEP
Pairing and authentication
IPsec
MD5
Bluetooth uses which type of modulation?
AM
FM
GFSK
QAM
What is the maximum theoretical range of Bluetooth Class 1 devices?
10 meters
50 meters
100 meters
500 meters
Which protocol does Bluetooth use for discovering devices?
ARP
SDP
ICMP
FTP
