Computer networks Basics

Which layer in the TCP/IP stack corresponds to the OSI model's transport layer?

A network link has a bandwidth of 100 Mbps. How much data can be transmitted in 10 seconds?

Which software is used to encrypt and secure communication over a network?

What device operates at the data link layer and connects devices within a single network?

Which OSI layer establishes, manages, and terminates connections?

Total Latency: Queue = 20 ms, Processing = 5 ms, Transmission = 10 ms. Find total delay.

What is the main unit of data in data communication?

Which protocol is responsible for translating domain names to IP addresses?

What is the main purpose of the TCP protocol?

A TCP segment has an RTT of 200 ms. If the sender retransmits a lost packet, how much additional delay is introduced?

What does Wi-Fi stand for?

Which layer is responsible for data encryption and decryption?

What is the primary role of the transport layer in the OSI model?

What is the role of DHCP in a network?

What does a network operating system (NOS) primarily manage?

Which device amplifies signals to extend the range of a network?

Which protocol is used for email transmission?

Which error detection method adds redundant bits to the data?

Parity Check: Packet = 11010101, odd parity, parity bit = 0. Is there an error?

Which method is commonly used for error detection?

What does bandwidth measure?

What is the primary function of a network interface card (NIC)?

Which device connects multiple networks and directs data based on IP addresses?

A satellite link has a delay of 500 ms and a bandwidth of 100 Mbps. How much data can be in transit at any given time?

Hamming Code: Error in 1100110, parity bits 1 & 4 wrong. Which bit to correct?

Which network device broadcasts data to all connected devices?

What device operates at the data link layer and connects devices within a single network?

Propagation Delay: Speed = 2×1082×10^82×108 m/s, Distance = 3000 km. Find delay.

Which protocol is responsible for file transfers?

In which topology is each device connected to two others, forming a closed loop?

Which wireless technology has the shortest range?

A packet of 1 KB is transmitted over a 10 Mbps link. What is the transmission delay?

Which category of software monitors network traffic for suspicious activity?

Which device amplifies signals to extend the range of a network?

Video Streams: 4K video needs 25 Mbps. Network = 100 Mbps. Max streams?

RTT: Packet sent in 20 ms, ACK in 20 ms. Total RTT?

What is the function of the data link layer?

Which protocol operates at the transport layer of the TCP/IP stack?

What is Hamming code used for?

Which topology connects all devices to a central hub?

A network has a one-way delay of 50 ms. What will be the RTT?

Which organization develops networking standards?

How many layers are there in the TCP/IP model?

What is a major disadvantage of the bus topology?

TCP Window: Bandwidth = 1 Gbps, RTT = 50 ms. Optimal window size?

Which layer of the TCP/IP model is responsible for applications like email and file transfer?

Which topology uses a single backbone cable for data transmission?

Which device connects multiple networks and directs data based on IP addresses?

What protocol is used at the Internet layer of the TCP/IP stack?

Which topology provides the highest level of redundancy?

Problem: Given the dataword 1101 and a generator 101, what is the CRC codeword?

Problem: A receiver detects the following CRC remainder when decoding data: 0000. What does this indicate?

If a link has a bandwidth of 10 Mbps and a propagation delay of 200 ms, what is the bandwidth-delay product?

Which technology uses radio waves for communication?

Which type of signal is used in analog communication?

Hamming Code Error: Data 1010 sent as 1011010. Find error position.

How many layers are there in the OSI model?

Which network device broadcasts data to all connected devices?

What is the primary function of a network interface card (NIC)?

Problem: A sender transmits the binary data 1010110 with an even parity scheme. What should the parity bit be?

What is the primary function of the HTTP protocol?

Checksum: Data: 10101010, 11001100. Sum = 101110110. What is the checksum?

Download Time: 500 MB file on 50 Mbps link. Minimum time?