Netfun lab wk7

•An ISP is granted a block of addresses starting with 190.100.0.0/16. The ISP needs to distribute these addresses to two groups of customers as follows: •The first group has 64 customers; each needs 128 IP addresses. •The third group has 128 customers; each needs 64 IP addresses. • Write at least the first and last IP addresses for the first two and last two customers in each group.

Given that the base address is FoH. 1. Create a new asm project “Lab2_Q1.asm". Assume that port A of 8255A PPI is connected to 8085. Write assembly code to send the value of FFH to FoH. Enter a delay of 2 ms for each transmission.

Question 5: a) In the context of WCDMA, answer the following questions: What is the chip rate of WCDMA? i. ii. What is the duration for WCDMA frame? iii. For the figure shown below, what is the spreading factor? Symbol iv. V. vi. vii. Data Spreading code Spread signal Datax code Spreading What is the corresponding processing gain? For the figure shown below, what is the multiplexing mode used? Uplink Downlink Frequency Time WCDMA has a frequency reuse of 1 between different cells. What does that mean? If fast fading occurs when the path difference between two received signals is half wavelength. Calculate the path difference at a frequency equals to 2 GHz.

The "bubbles" at the outputs of the 7442 decoder mean this IC has active _____ (HIGH, LOW) outputs.

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Q4. Consider the 16-QAM digital modulation scheme (a) What does the abbreviation QAM stand for? (b) Sketch an I-Q constellation diagram for this modulation scheme. (c) State the number of bits per symbol. (d) If the bit rate that is achieved with this modulation scheme is 256 Mbit s, what is the baud (symbol) rate?

3. Which type of measurement should be used to ensure that a laser is working properly in a single-modefiber?A. Optical insertion lossb. Optical return lossc. Attenuation4. How many OC signals are combined into a 40 Gbps SONET network?A. 768 b. 192c. 256

Explain with the aid of equations the following: i. How to improve the noiseless channel capacity? ii. How to improve the SNqR in the PCM system?

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b) Consider the below figure in which three hosts, with private IP addresses 10.0.1.12, 10.0.1.15, 10.0.1.18 are in a local network behind a router configured with NAT that sits between these three hosts and the larger Internet. IP datagrams being sent from, or destined to, these three hosts must pass through this NAT router. The router's interface on the LAN side has IP address 10.0.1.25, while the router's address on the Internet side has IP address 135.122.199.206. NAT translation table WAN side addr LAN side addr .1.. .1. D: S: D: D: .., .1. Suppose that the host with IP address 10.0.1.12 sends an IP datagram destined to host 128.119.180.182. The source port is 3376, and the destination port is 80. Find the source and destination IP addresses in packets at step 1,2, 3 and 4. Packet Source IP (S) Destination IP (D) 1 2 3

Q31)The bit rate for American PCM-24 system is a. 2.048 Mb/s b. 1.544 Mb/s c. 8 kb/s d. 64 kb/s   This multiple choice question from DIGITAL COMMUNICATIONS course.just write for me the final answer.

The following data are transmitted in a serial communication system (P is the parity bit). What parity is being used in each case? a. ABCDEFGHP = 010000101 b. ABCDEFGHP = 011000101 c. ABCDP = 01101 d. ABCDEP = 101011 e. ABCDEP = 111011

19. With necessary diagrams and equations, describe the operation of different types of single-phase PWM inverters. Compare multiple-pulse and sinusoidal pulse modulation schemes with single-phase PWM scheme.

Q12: CSMA/CD is a protocol used in what Data Link Layer protocol? a. Polling b. Token Passing bus c. Token Passing ring d. Ethernet e. TDMA f. FDMA g. CDMA h. None of the above

What are the potential effects of "write amplification" on SSDs?

can you drow a 5 bits johanson Counter ? with D filp flop.

Assume the baud rate equals bits per second. How long is a bit for a 9600 baud modem? A) 9600 B) 104 us C) 1.04 ns D) 9.6 ns

In a digital communication, explain all the methods/mechanism used for the minimization of Bit Error Rate (BER). Also state that which method/mechanism is preferred and why?

Use NOR gates to draw a diagram of an SR latch. Repeat using NAND gates.

Identify the ATM adaptation (AAL) sublayer that breaks data into cells at the sender and reassembles cells into larger data units at the receiver. O Segmentation and reassembly layer. O Asynchronous Transfer Mode layer. O Convergence layer. O Both (a) and (c).

Q3 /mention (3) main differences between TCP/IP AND OSI MODEL?

Please do question 1

The terminal count up (TCu) and terminal count down (TCd) of 74193 are normally ____ . The TCu is used to indicate that ____ count is reached.  HIGH, 9th B.LOW, 9th C. HIGH, 15th D. LOW, 15 E. LOW, maximumD. a BCD decade up/down counter E. a register