Mod 3 v1
What is the name of the method that two computers can use to ensure that packets are not dropped because too much data is being sent too quickly?
a. flow control
b. source
c. encapsulation
d. segmentation
What is
a. Flow Control
the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver.
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
a. Dynamic Host Configuration Protocol (DHCP)
b. Domain Name System (DNS)
c. File Transfer Protocol (FTP)
d. TCP/IP
what is
a. Dynamic Host Configuration Protocol (DHCP)
b. Domain Name System (DNS)
c. File Transfer Protocol (FTP)
Which Protocol Data Unit (PDU) format is used when bits are received from the network medium by the NIC of a host?
A. Bit
B. Packet
C. Segment
D. Frame
what is
D. Frame: The Frame PDU is used when bits are received from the network medium by the NIC of a host. This PDU is used at the Data Link layer of the OSI model and contains the MAC addresses of the source and destination hosts, as well as error detection and correction information.
Packet: The Packet PDU is used at the Network layer of the OSI model and contains logical addresses (IP addresses) of the source and destination hosts, as well as other fields like protocol type and packet length.
Segment: The Segment PDU is used at the Transport layer of the OSI model and contains data from an application, as well as protocol-specific control information like source and destination port numbers.
Bit: The Bit PDU represents a single binary digit (0 or 1) and is the smallest unit of data in computer networks.
Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to respond?
A. Request-response protocol
B. Flow control mechanism
C. Retransmission timeout
D. Connection-oriented communication
What is
Answer: C. Retransmission timeout is a method that allows a computer to react accordingly when it requests data from a server and the server takes too long to respond. When a computer sends a request to a server and does not receive a response within a specified time frame, it assumes that the packet has been lost and retransmits it. This process continues until the packet is acknowledged or until a maximum number of retransmission attempts is reached. The other options are not relevant to this scenario.
Which of the following is the protocol that governs the way a web server and client interact?
A) HTTP
B) DNS
C) FTP
D) SMTP
What is
a. HTTP
A) HTTP (Hypertext Transfer Protocol): This is the protocol used for communication between web servers and clients. It governs the way in which web servers respond to requests and the way in which clients receive and display web content.
B) TCP (Transmission Control Protocol): This is a protocol that establishes a connection between two devices and ensures that data is transmitted reliably.
C) FTP (File Transfer Protocol): This is a protocol used for transferring files between servers and clients.
D) SMTP (Simple Mail Transfer Protocol): This is a protocol used for sending and receiving email messages.
What is the difference between flow control and congestion control in computer networking?
a. source
b. destination
c. flow control
d. protocol
What is
c. flow control
The term used to describe the process of managing the rate of data transmission between two nodes to prevent a fast sender from overwhelming a slow receiver is called "flow control". Flow control is a technique used in communication networks to ensure that the sender does not send data too quickly for the receiver to handle, which can cause packet loss and degrade network performance. Flow control techniques can include buffering, throttling, and congestion avoidance mechanisms to regulate the flow of data between the sender and receiver.
Which of the following names is assigned to the transport layer Protocol Data Unit (PDU)?
A. Segment
B. Packet
C. Frame
D. Bits
what is
a. segment
A segment is the name assigned to the transport layer PDU. It is created when the transport layer takes data from the application layer and divides it into smaller units for transmission.
B. Packet: A packet is the name assigned to the network layer PDU. It is created when the network layer takes data from the transport layer and adds an IP header to create a network-layer packet for transmission.
C. Frame: A frame is the name assigned to the data link layer PDU. It is created when the data link layer adds a header and trailer to the network-layer packet to create a frame for transmission on the network.
D. Bits: Bits are the smallest unit of data in a computer. While data is ultimately transmitted as a stream of bits, the transport layer does not work at the bit level, and so bits are not the name assigned to the transport layer PDU.
In the TCP/IP model, which layer is responsible for routing messages through an internetwork?
A. Data Link Layer
B. Transport Layer
C. Network Layer
D. Application Layer
what is
C. Network Layer: The Network layer is responsible for routing messages through an internetwork in the TCP/IP model. This layer uses IP (Internet Protocol) to provide logical addressing and routing services to send packets between different networks.
Transport Layer: The Transport layer provides reliable data transfer services between applications running on different hosts. It uses protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) to provide end-to-end delivery and flow control.
Data Link Layer: The Data Link layer provides the physical means to transfer data between network nodes. It is responsible for encapsulating packets into frames and providing error detection and correction.
Application Layer: The Application layer provides services that support user applications, such as file transfer, email, and web browsing. It communicates directly with the application and passes data down to the lower layers for transmission.
Which layer of the TCP/IP model is not included in the OSI model?
A) Application Layer
B) Transport Layer
C) Internet Layer
D) Network Interface Layer
what is
D) Network Interface Layer. The Network Interface layer of the TCP/IP model is not part of the OSI model. The Data Link and Physical layers of the OSI model perform similar functions as the Network Interface layer, while the Application, Transport, and Internet layers of the TCP/IP model are functionally equivalent to the Application, Transport, Network, and Data Link/Physical layers of the OSI model.
Which of the following layers of the protocol stack is responsible for managing individual conversations between web servers and clients?
A) Transport layer
B) Network layer
C) Application layer
D) Data link layer
What is
c application layer
Application layer: This layer is responsible for providing access to the network for user applications. It is the highest level of the protocol stack and includes protocols such as HTTP, FTP, and SMTP.
Transport layer: This layer is responsible for the end-to-end delivery of data between hosts. It includes protocols such as TCP and UDP.
Network layer: This layer is responsible for addressing and routing data between networks. It includes protocols such as IP.
Data link layer: This layer is responsible for the physical transmission of data over the network. It includes protocols such as Ethernet and Wi-Fi.
What is the sliding window protocol in computer networking, and how does it relate to flow control?
a. broadcasts
b. segmentation
c. access method
d. sliding window protocol
What is the
sliding window protocol is a flow control techniques.
The sliding window protocol is a technique used in computer networking that facilitates the reliable and efficient transmission of data between two devices over a network. It is a form of flow control that allows the sender to transmit a specific number of packets or frames without waiting for an acknowledgement from the receiver.
In the sliding window protocol, the sender maintains a window of packets that can be sent before waiting for an acknowledgement. The size of the window is determined by the maximum number of packets that can be transmitted without overwhelming the receiver. As packets are sent, the sender slides the window forward, and when the receiver acknowledges the receipt of the packets, the window slides forward again, allowing for the transmission of more packets.
The sliding window protocol helps to optimize network performance by allowing the sender to transmit data more efficiently, without overwhelming the receiver. It ensures that the sender does not transmit data too quickly for the receiver to handle, thereby preventing packet loss and retransmission delays. Additionally, it enables the sender to send multiple packets without waiting for each individual packet to be acknowledged, improving the overall efficiency of data transmission over the network.
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?
A. Subnet Mask:
B. Default Gateway
C. DNS Server
D. DHCP Server
what is
Answer: A. Subnet Mask: The subnet mask is used to identify the network and host portion of an IPv4 address when manually configured on a web server. It is a 32-bit value that is used in conjunction with the IP address to determine which bits of the IP address identify the network and which bits identify the host.
B. Default Gateway: The default gateway is the IP address of the router that connects a network to other networks. It is used by devices to send packets to destinations that are not on the local network.
C. DNS Server: The DNS server is used to resolve domain names to IP addresses. When a device needs to communicate with a remote host, it sends a DNS query to a DNS server to resolve the domain name to an IP address.
D. DHCP Server: The DHCP server is used to automatically assign IP addresses to devices on a network. When a device connects to the network, it sends a DHCP request to the DHCP server, which responds with an available IP address and other configuration information.
Which layer of the TCP/IP model is responsible for establishing end-to-end connections and ensuring reliable delivery of data?
A. Transport Layer: The Transport layer is responsible for establishing end-to-end connections and ensuring reliable delivery of data in the TCP/IP model. It uses protocols like TCP (Transmission Control Protocol) to provide reliable data transfer services and flow control between applications running on different hosts.
B. Network Layer: The Network layer provides logical addressing and routing services to send packets between different networks in the TCP/IP model. It uses IP (Internet Protocol) to provide these services.
C. Data Link Layer: The Data Link layer provides the physical means to transfer data between network nodes. It is responsible for encapsulating packets into frames and providing error detection and correction.
D. Application Layer: The Application layer provides services that support user applications, such as file transfer, email, and web browsing. It communicates directly with the application and passes data down to the lower layers for transmission.
What is
Transport Layer: The Transport layer is responsible for establishing end-to-end connections and ensuring reliable delivery of data in the TCP/IP model. It uses protocols like TCP (Transmission Control Protocol) to provide reliable data transfer services and flow control between applications running on different hosts.
Network Layer: The Network layer provides logical addressing and routing services to send packets between different networks in the TCP/IP model. It uses IP (Internet Protocol) to provide these services.
Data Link Layer: The Data Link layer provides the physical means to transfer data between network nodes. It is responsible for encapsulating packets into frames and providing error detection and correction.
Application Layer: The Application layer provides services that support user applications, such as file transfer, email, and web browsing. It communicates directly with the application and passes data down to the lower layers for transmission.
What is the name of the Protocol Data Unit (PDU) at the network layer?
A) Segment
B) Datagram
C) Frame
D) Packet
What is
D) Packet. The Protocol Data Unit at the network layer is called a Packet. The Datagram is the PDU at the transport layer, the Segment is the PDU at the transport layer when using TCP, and the Frame is the PDU at the data link layer.
Which layer of the OSI model is responsible for taking a packet delivered by the IP protocol and formatting it for transmission, after IP has already delivered the packet across the best path to the destination?
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
E) Network layer
F) Data link layer
G) Physical layer
What is
f datalink
After the IP protocol has delivered a packet across the best path to the destination, which layer of the OSI model takes the packet and formats it for transmission?
The layer of the OSI model that takes a packet delivered by the IP protocol and formats it for transmission is the data link layer (option F).
Which of the following accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?
A. The application layer protocol generates the data to be transmitted and passes it down to the transport layer, which divides the data into segments and adds a TCP header to each segment. The network layer protocol adds an IP header to each TCP segment, which includes the source and destination IP addresses. The data link layer protocol adds a data link header and trailer to the IP packet, which includes the source and destination MAC addresses. Finally, the complete packet is transmitted over the physical layer of the network.
B. The physical layer of the network converts the data into electrical, optical, or radio signals that can be transmitted over the network medium. The data link layer protocol adds a data link header and trailer to the data, which includes the source and destination MAC addresses. The network layer protocol adds an IP header to the data, which includes the source and destination IP addresses. The transport layer protocol divides the data into segments and adds a TCP header to each segment.
what is
A. The application layer protocol generates the data to be transmitted and passes it down to the transport layer, which divides the data into segments and adds a TCP header to each segment. The network layer protocol adds an IP header to each TCP segment, which includes the source and destination IP addresses. The data link layer protocol adds a data link header and trailer to the IP packet, which includes the source and destination MAC addresses. Finally, the complete packet is transmitted over the physical layer of the network.
Which of the following processes involves placing one Protocol Data Unit (PDU) inside of another Protocol Data Unit (PDU)?
A. Encapsulation
B. Decapsulation
C. Segmentation
D. Packetization
what is
Answer: A. Encapsulation: Encapsulation is the process of placing one PDU inside of another PDU. For example, when data is sent over a network, the data is encapsulated with headers and trailers at each layer of the OSI model.
A. Encapsulation: Encapsulation is the process of placing one PDU inside of another PDU. For example, when data is sent over a network, the data is encapsulated with headers and trailers at each layer of the OSI model.
B. Decapsulation: Decapsulation is the process of removing headers and trailers from an incoming PDU so that the original data can be accessed. This process occurs at each layer of the OSI model as data is received.
C. Segmentation: Segmentation is the process of dividing a large PDU into smaller segments for transmission over a network. This process occurs at the transport layer of the OSI model.
D. Packetization: Packetization is the process of adding a header to data to create a packet for transmission over a network. This process occurs at the network layer of the OSI model.
Which Protocol Data Unit (PDU) format is used at the transport layer?
A. Segment
B. Packet
C. Frame
D. Bit
What is
A. Segment: The transport layer uses the segment PDU format in the TCP/IP model. The segment contains header information, including the source and destination port numbers, sequence and acknowledgement numbers, and other control information, as well as the actual data being transmitted.
Packet: The packet PDU format is used at the network layer, where packets are created by adding an IP header to the segment received from the transport layer.
Frame: The frame PDU format is used at the data link layer, where frames are created by adding a header and trailer to the packet received from the network layer.
Bit: The bit PDU format is the smallest unit of data used in networking and is not specific to any layer in the TCP/IP model.
What is the term for the amount of time a computer will wait for a response after making a request?
A) Response time
B) Processing time
C) Timeout
D) Latency
What is
C. timeout
Timeout: This is the maximum amount of time a computer system will wait for a response before giving up on the request.
Response time: This is the time it takes for a system to respond to a request after receiving it. It includes the time it takes to process the request and transmit the response.
Bandwidth: This refers to the amount of data that can be transmitted over a network connection in a given amount of time.
Which two layers of the OSI model are equivalent to a single layer of the TCP/IP model in terms of functionality? (Choose two.)
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
E) Network layer
F) Data link layer
G) Physical layer
What is
A and E
Application and Network
The two layers of the OSI model that are equivalent to a single layer of the TCP/IP model in terms of functionality are:
The Application layer (option A) in the OSI model is equivalent to both the Application and Presentation layers in the TCP/IP model.
The Internet layer (option E) in the TCP/IP model is equivalent to the Network layer in the OSI model.
What is the purpose of encapsulation in the TCP/IP process?
A. To ensure reliable and efficient data transmission over the network
B. To divide the data into segments and add a TCP header to each segment
C. To add an IP header to each TCP segment, which includes the source and destination IP addresses
what is
A. To ensure reliable and efficient data transmission over the network
Which layer in the TCP/IP model is responsible for routing messages through an internetwork?
A Application Layer: The Application layer provides services that support user applications, such as file transfer, email, and web browsing. It communicates directly with the application and passes data down to the lower layers for transmission.
B. Network Layer: The Network layer is responsible for routing messages through an internetwork. This layer uses IP (Internet Protocol) to provide logical addressing and routing services to send packets between different networks.
C. Transport Layer: The Transport layer provides reliable data transfer services between applications running on different hosts. It uses protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) to provide end-to-end delivery and flow control.
D. Data Link Layer: The Data Link layer provides the physical means to transfer data between network nodes. It is responsible for encapsulating packets into frames and providing error detection and correction.
what is
B. Network Layer: The Network layer is responsible for routing messages through an internetwork. This layer uses IP (Internet Protocol) to provide logical addressing and routing services to send packets between different networks.
A Application Layer: The Application layer provides services that support user applications, such as file transfer, email, and web browsing. It communicates directly with the application and passes data down to the lower layers for transmission.
C. Transport Layer: The Transport layer provides reliable data transfer services between applications running on different hosts. It uses protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) to provide end-to-end delivery and flow control.
D. Data Link Layer: The Data Link layer provides the physical means to transfer data between network nodes. It is responsible for encapsulating packets into frames and providing error detection and correction.
Which three layers of the OSI model are functionally equivalent to the TCP/IP application layer? (Choose 3)
A. Presentation Layer
B. Session Layer
C. Application Layer
D. Transport Layer
E. Network Layer
F. Data Link Layer
What is
Answer: C, D, and E. The Application layer of the OSI model is functionally equivalent to the Application layer of the TCP/IP model. The Transport layer of the OSI model is responsible for end-to-end delivery of data and flow control between applications, which is similar to the TCP/IP Transport layer. The Network layer of the OSI model is responsible for logical addressing and routing of data between networks, which is similar to the TCP/IP Network layer.
Which of the following are potential drawbacks to setting a longer timeout period for requests?
A) Increased server load
B) Decreased network latency
C) Improved performance
D) Reduced likelihood of errors
What is
b. decreased network performance
A) Increased server load: If a longer timeout period is set, servers will need to maintain connections for longer periods of time, which can result in increased server load and decreased performance.
B) Decreased network latency: Extending the timeout period does not lead to a reduction in network latency, which is the delay between sending and receiving data packets.
C) Improved performance: A longer timeout period may not necessarily improve the overall performance of a system, as it may result in an increase in the number of open connections that need to be maintained.
D) Reduced likelihood of errors: While extending the timeout period may reduce the likelihood of errors due to timeouts, it can also lead to issues with other system components, such as load balancers and firewalls, which may have their own timeout limitations.
Which layer of the TCP/IP protocol stack is functionally equivalent to the transport layer of the OSI model?
A) Application layer
B) Transport layer
C) Network layer
D) Data link layer
E) Physical layer
What is the TCP/IP
B. Transport Layer
A) Application layer: The topmost layer of the TCP/IP model is responsible for providing network services to applications. It interacts with the application software and supports application protocols such as HTTP, FTP, and SMTP.
B) Transport layer: This layer is responsible for providing reliable end-to-end data transfer between applications. It ensures that data is delivered without errors, in the correct order, and without duplicates or omissions. The transport layer uses either the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP) to accomplish this task.
C) Network layer: This layer is responsible for routing packets across the network. It determines the best path for a packet to take to reach its destination and forwards the packet to the next hop on that path. The network layer is also responsible for addressing and fragmentation of packets.
D) Data link layer: This layer is responsible for transmitting data over a physical link between two devices. It takes packets from the network layer and breaks them down into frames that can be transmitted over the physical link. The data link layer is also responsible for error detection and correction.
E) Physical layer: The bottommost layer of the TCP/IP model is responsible for transmitting raw bits over a physical medium such as copper wire, fiber optic cable, or radio waves. It takes frames from the data link layer and encodes them as electrical or optical signals that can be transmitted over the physical medium. The physical layer is also responsible for modulation, demodulation, and transmission medium selection.