CSA07 Physical Layer

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

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

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?

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

Which network device broadcasts data to all connected devices?

Which error detection method adds redundant bits to the data?

Which topology uses a single backbone cable for data transmission?

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

* Which network device broadcasts data to all connected devices?

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

Which category of software monitors network traffic for suspicious activity?

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

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

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

Which layer is responsible for data encryption and decryption?

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

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

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

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

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

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

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

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

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

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

Which topology provides the highest level of redundancy?

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

Which topology uses a single backbone cable for data transmission?

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

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

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

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

Which OSI layer establishes, manages, and terminates connections?

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

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

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

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

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

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

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

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

Which category of software monitors network traffic for suspicious activity?

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

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

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?

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

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

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

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