20240303_10_KrasnobabtsevArtem

Subject: Computer Networks Note: Please answer in own words. copy from internet will very unhelpful for me. Question:  Explain the timing diagrams of two different connection establishment mechanisms of TCP.

•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.

Q14: Multiple Choice - The function of ARP is to what? a. Translate from well known TCP ports to IP addresses. b. Translate between IP addresses and TCP Ports c. Translate from IP addresses to MAC addresses. d. Translate from MAC addresses to IP addresses. e. Address Routing Protocol - converts routes. f. None of the above.

1- Which layers are network support layers? a. Physical Layer b. session Layer 2-What are the responsibilities of Data Link Layer? a. Framing b. Encryption c. Mail services 3- What are the types of errors? a. Compression b. Redundancy c. Single-Bit 4- What are the responsibilities of Application Layer? c. Application Layers Flow Control b. Translation c. Mail services 5- application layer protocols? a. TFTP b. ICMP c. (ARP)

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

R R R Q S (a) (b) (c) For each circuit above, discuss whether or not the circuit has really the same behaviour as the RS latch. Hint: use NOR gate for the RS latch and then do the analysis.

Consider an IT organisation. There are two units in the organisation- Application Development and Management Team and IT Operation Team. There exist two separate channels for the customers to communicate the organisation- one between the client and application development team for product creation and alteration and the other channel for the customer to communicate the IT operation team for operational issues. Are there any problems with this model? If you want to set up the IT organisation according to ITIL how you will redesign the communication channels?

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Write the VHDL code that will implement this function. Please respect the VHDL syntax and upload your answer to Dropbox A EQ B

Question II 1- Suppose AHU is allocated a block of IP address: 200.23.16.0/20. Based on your knowledge on IP addressing, answer the following questions: How many hosts at maximum can AHU supply with public IP addresses? Suppose there are 8 colleges that AHU needs to distribute the IP addresses to Suppose the IP address demand from each college is the same. What will be the block of IP addresses allocated to each college? How many hosts can each college supply with public IP addresses? (e) Suppose there are 6 colleges that AHU needs to distribute the IP addresses to. Two of the colleges request twice as much IP addresses as the other 4. What will be the block of IP addresses allocated to each college? How many hosts can each college supply with publie IP addresses?

Q. No 3. In a Public Switch Telephone Network (PSTN), how the analog speech signal is converted to digital signal in the PCM? Also highlight the main functions of the given parts in the PSTN figure. Public Switched Trelephone Network PSTN W7CLOUD.COM Central Office

Explain how the data logger works in at least four points or sentences.

4- A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized? c) data link layer b) physical layer d) presentation layer network printing using a print server 5- What service is provided by SMTP? network layer a) Allows remote access to network devices and servers. b) Uses encryption to provide secure remote access to network devices and servers. c) Allows clients to send email to a mail server and the servers to send email to other servers. d) An application that allows real-time chatting among remote users.

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

Write an ALP to transfer the message “CORONA” serially at 2400 baud rate, 8-bit data, 1- stop bit. Do it continuously.

What is the concept behind "write amplification" in SSDs?

Q.2) What is the method of arbitration of the PCI bus? Modify the following diagram arbitration, when there is a device C request use the PCI bus at the same time with device B. The arbiter services the device A then C to transfer 2 data for each, then service device B to transfer 1 data. CLK REOA REQ-S %3D GNTEA GNT-B %3D FRAME %3D %3D IRDY %3D TRDY Address Data Addre Data AD

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middle 4 digit            letter    7 segment output           5206             EhJ             EhJ5206   print that specific combination using one  7 segment display in a serial. the following should be included in the report. 1-- truth table 2--circuit  =>general sop and pos =>simplified sop and pos =>using nand and nor gate =>using decoder  =>using multiplexer   3-- conclusion and discussion

i. Draw the circuit in the figure below. Complete connection for making seven segment decoder and write the truth table of BCD to seven segment display. VCC T CONNECTION DIAGRAM DIP (TOP VIEW) 1 CC Vcc 15 7447 _1_2_3_4_5_8_7_8 в с LT BI/RBO RBI DA GND GND = d e с g 2000 CA b D -b a CA

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

Please draw the the circuit as well in the explanation and not only words/steps to construct and PLEASE DON'T POST ANY CHAT GPT ANSWERS.

No plagarism please! Correct and detailed answer will be Upvoted else downvoted. Thank you!

Subject = signals and systems

4. FIGURE 1 shows how a 3 to 8 line decoder (TTL 74138) can be used in conjunction with NAND gate (TTL 74133) to connect a set of switches to the data bus of a microprocessor system via buffers (TTL 74367). Answer the following questions relating to the diagram: a) What address, in HEX, is required on the address bus in order toread the switches? b) RD and MEMRQare control lines from the CPU. What must their logic state be in order to read the switches? Data bus 74 367 74 133 74 138 A15 D7 DO EN EN Address bus RD MEMRO A4 A3 A1 AO EN TRUTH TABLE C BA|O 1 2 3 4 5 6 7 0 0 00 1111 0 0 11 0 1 1 1 1 1 1 0 1 01 10 1 1 1 1 1 0 1 11 1 10 1 1 1 1 1 0 01 1i10 1 1 i 10 11 1 1 1 10 1 1 1 1 01 1 1 1 1 1 0 1 1 1 11 1 1 1 1 1 1 0 11 74 367 (part of) FIGURE 1 Data enable Data outputs Input switches

4. FIGURE 1 shows how a 3 to 8 line decoder (TTL 74138) can be used in conjunction with NAND gate (TTL 74133) to connect a set of switches to the data bus of a microprocessor system via buffers (TTL 74367). Answer the following questions relating to the diagram: a) What address, in HEX, is required on the address bus in order toread the switches? b) RD and MEMRQare control lines from the CPU. What must their logic state be in order to read the switches? Data bus 74 367 74 133 74 138 A15 D7 DO EN EN Address bus MEMRQ A4 AO EN TRUTH TABLE CBA 0 1 2 3 4 5 6 7 0 0 00 1 1 1 1 1 11 0 0 11 01 1 1 1 1 1 0 1 01 10 1 1 1 1 1 0 1 11 1 10 1 1 1 1 10 01 1 1 1 0 1 1 1 10 11 1 1 1 1 0 1 1 1 101 1 1 1 1 1 0 1 1 11 1 1 1 1 1 1 0 74 367 (part of) 1

B/Select the correct answer: 1) The basic structures in VHDL contain a) Entity b) Architecture The com IVIUE NJIHOVIO. c) Library d) All of them nea 3) VHDL is a design language. a) Software b) Hardware c) Software and Hardware d) Not all is mentioned

VHDL