LAB QUIZ BATCH II

2.

What does the java.net.InetAddress class represent?

Socket
IP Address
Protocol
MAC Address

Correct Answer

A. IP Address

Explanation

The java.net.InetAddress class represents an IP Address. It is used to encapsulate both the numerical IP address and the hostname. This class provides methods to get the IP address in both textual and numerical formats, as well as methods to resolve hostnames to IP addresses and vice versa.

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3.

Datagram is basically an information but there is no guarantee of its content, arrival or arrival time

True
False

Correct Answer

A. True

Explanation

A datagram is a unit of data that is transmitted over a network. It is a self-contained message that carries information from the source to the destination. However, unlike other forms of data transmission, a datagram does not provide any guarantees regarding its content, arrival, or arrival time. It is a best-effort delivery mechanism where the data may arrive out of order, be lost, or be delayed. Therefore, the statement that there is no guarantee of its content, arrival, or arrival time is true.

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4.

Which classes are used for connection-less socket programming?

DatagramSocket
DatagramPacket
Both A & B
None of the above

Correct Answer

A. Both A & B

Explanation

Both the DatagramSocket and DatagramPacket classes are used for connection-less socket programming. The DatagramSocket class represents a socket for sending and receiving datagram packets. It provides methods for creating and binding a socket, sending and receiving packets, and closing the socket. The DatagramPacket class represents a packet of data that can be sent or received through a DatagramSocket. It contains the data to be sent or received, along with information about the destination or source address and port. Therefore, both classes are essential for connection-less socket programming.

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5.

Which answer correctly lists the OSI PDUs in order?

Data, Packet, Frame, Segment, Bit
Bit, Data, Packet, Segment, Frame
Data, Segment, Packet, Frame, Bit
Bit, Frame, Segment, Packet, Data

Correct Answer

A. Data, Segment, Packet, Frame, Bit

Explanation

This answer correctly lists the OSI PDUs in order from highest to lowest level. The OSI model consists of seven layers, and each layer has its own PDU (Protocol Data Unit). Starting from the highest level, the correct order is: Data (Application layer), Segment (Transport layer), Packet (Network layer), Frame (Data Link layer), and Bit (Physical layer).

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6.

Which transport layer protocol provides connection-oriented, reliable transport?

TFTP
UDP
Ethernet
TCP

Correct Answer

A. TCP

Explanation

TCP (Transmission Control Protocol) is the correct answer because it is a connection-oriented and reliable transport layer protocol. TCP establishes a connection between the sender and receiver before data transmission, ensuring that all data packets are received in the correct order and without errors. It also provides mechanisms for flow control and congestion control to optimize data transmission. Unlike UDP (User Datagram Protocol), which is connectionless and does not guarantee reliable data delivery, TCP is widely used for applications that require reliable and ordered delivery of data, such as web browsing, file transfer, and email.

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7.

Which OSI layer is concerned with reliable end-to-end delivery of data?

Application
Transport
Network
Data Link

Correct Answer

A. Transport

Explanation

The Transport layer of the OSI model is responsible for ensuring reliable end-to-end delivery of data. This layer establishes a connection between the source and destination devices and breaks the data into smaller segments for transmission. It also handles error checking, flow control, and retransmission of lost or corrupted data. By providing these services, the Transport layer ensures that data is delivered accurately and in the correct order to the receiving device.

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8.

Logical addressing is found in the layer, while physical addressing is found in the layer.

Physical, Network
Network, Physical
Data Link, Network
Network, Data Link

Correct Answer

A. Network, Data Link

Explanation

Logical addressing is found in the Network layer, while physical addressing is found in the Data Link layer. In a computer network, logical addressing refers to the use of IP addresses to uniquely identify devices and enable communication between them. This addressing is done at the Network layer of the OSI model. On the other hand, physical addressing involves the use of MAC addresses to identify devices at the Data Link layer. MAC addresses are hardware addresses that are assigned to network interface cards and are used for communication within a local network.

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9.

Each packet is routed independently in ……………….

Virtual circuit subnet
Short circuit subnet
Datagram subnet
ATM subnet

Correct Answer

A. Datagram subnet

Explanation

In a datagram subnet, each packet is routed independently. This means that each packet is treated as a separate entity and is routed based on the destination address contained within the packet itself. There is no established path or connection between the source and destination, and each packet can take a different route if necessary. This allows for more flexibility and efficiency in routing, as packets can be dynamically routed based on network conditions and congestion levels.

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10.

In datagram subnet new route is chosen …………………

For every packet sent
For all the packet sent
Only for the first packet
For the packet which is not transmitted

Correct Answer

A. For every packet sent

Explanation

In a datagram subnet, a new route is chosen for every packet sent. This means that for each individual packet, the network will determine the most appropriate route to take based on current conditions and network congestion. This allows for more efficient and flexible routing, as each packet can be dynamically routed to avoid congestion or network failures.

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Lab Quiz Batch II

The client in socket programming must know which informations?

Quiz Preview

What does the java.net.InetAddress class represent?

Datagram is basically an information but there is no guarantee of its content, arrival or arrival time

Which classes are used for connection-less socket programming?

Which answer correctly lists the OSI PDUs in order?

Which transport layer protocol provides connection-oriented, reliable transport?

Which OSI layer is concerned with reliable end-to-end delivery of data?

Logical addressing is found in the layer, while physical addressing is found in the layer.

Each packet is routed independently in ……………….

In datagram subnet new route is chosen …………………

Lab Quiz Batch II

The client in socket programming must know which informations?

Quiz Preview

What does the java.net.InetAddress class represent?

Datagram is basically an information but there is no guarantee of its content, arrival or arrival time

Which classes are used for connection-less socket programming?

Which answer correctly lists the OSI PDUs in order?

Which transport layer protocol provides connection-oriented, reliable transport?

Which OSI layer is concerned with reliable end-to-end delivery of data?

Logical addressing is found in the ________________ layer, while physical addressing is found in the ________________ layer.

Each packet is routed independently in ……………….

In datagram subnet new route is chosen …………………

Logical addressing is found in the layer, while physical addressing is found in the layer.