WorksheetsChapter 6 CYS233
Total questions: 20
Worksheet time: 10mins
What is the primary responsibility of the Link Layer in networking?
Handling data encryption
Providing reliable communication over the physical layer
Routing data across different networks
Managing IP address assignments
In a datagram, the Link Layer encapsulates the data in:
Segment
Packet
Frame
Datagram
Which of the following is NOT a service provided by the Link Layer?
Flow control
Error detection
Data routing
Reliable delivery between adjacent nodes
Which of the following is used for error detection in Link Layer protocols?
Parity checking
Internet checksum
Cyclic Redundancy Check (CRC)
All of the above
What does the MAC address in a frame header identify?
The source device
The destination device
Both the source and destination devices
The network protocol
Which of the following protocols is used for Address Resolution in Ethernet networks?
ARP (Address Resolution Protocol)
DNS (Domain Name System)
DHCP (Dynamic Host Configuration Protocol)
ICMP (Internet Control Message Protocol)
What does CSMA/CD stand for in Ethernet networks?
Carrier Sense Multiple Access with Collision Detection
Centralized Signal Management with Collision Data
Common Signal Management with Collision Distribution
Constant Signal Management with Controlled Delivery
Which of the following is a feature of Ethernet’s MAC protocol?
Slotted ALOHA
CSMA/CD with binary backoff
Polling
Token passing
In a CSMA/CD protocol, what happens when a collision is detected?
The transmission is completed successfully
The transmission is aborted, and the sender waits before retransmitting
The receiver ignores the collision and continues receiving
The sender retries immediately without waiting
What is the purpose of a “token” in the token-passing MAC protocol?
To control the timing of frame transmission
To prevent collisions by granting transmission rights to one node at a time
To allocate bandwidth equally among nodes
To provide encryption
What is the function of the Internet checksum in networking?
To ensure data integrity by detecting bit errors
To assign IP addresses dynamically
To divide the data into smaller packets
To manage congestion in the network
What type of error does Cyclic Redundancy Check (CRC) primarily detect?
Single-bit errors
Burst errors
Transmission delays
Routing errors
What is the typical size of a MAC address?
32 bits
48 bits
64 bits
128 bits
In Ethernet, what does the “Type” field in the frame header indicate?
The source IP address
The source MAC address
The higher-layer protocol (e.g., IP, ARP)
The size of the payload
How does the ARP protocol work?
It resolves IP addresses to MAC addresses within a LAN
It provides dynamic allocation of IP addresses
It routes data across different subnets
It manages error detection and correction
Which of the following is true about Ethernet’s reliability?
It provides guaranteed delivery of frames
It is connectionless and unreliable
It offers full-duplex communication
It uses acknowledgment mechanisms for each frame
What is the main difference between a bus topology and a switched Ethernet topology?
A bus topology has no central switch, whereas a switched topology does
A bus topology allows full-duplex communication, while switched Ethernet does not
A bus topology uses token passing, while Ethernet uses CSMA/CD
A bus topology is more efficient than switched Ethernet
What is a major advantage of a switched Ethernet network?
It is faster than wireless Ethernet
It eliminates collisions by separating traffic into individual segments
It requires less bandwidth than a bus topology
It provides a direct link between every device in the network
Which of the following is a key feature of the IEEE 802.3 Ethernet standard?
Full-duplex communication
Token passing
Time-division multiplexing
Polling for communication
How does Ethernet handle high traffic loads?
By using more frequent polling
By reducing the data transmission speed
By segmenting the network and using switches
By increasing the number of collision domains
