A ________ bridge can forward and filter frames and automatically build its forwarding table. a. simple b. dual c. transparent d. none of the above
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A ________ bridge can forward and filter frames and automatically build its forwarding table. a. simple b. dual c. transparent d. none of the above
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- 1.Create a new document called portmapping.txt in Ubuntu’s home directory and answer the following questions: 1.Add the following port information services: POP3, IMAP, SMTP, DNS, DHCP, NTP, LDAP, and BGP 2.An end-user is experiencing issues with connecting to testout.com. Everytime the user enters testout.com in their browser it takes them to blackboard.com. Run the command the will help troubleshoot the issue? Once you have the information from the command how would you verify? 3. Another Sys Admin oversaw deploying the LAMP stack for a new website. The components consist of Apache2 and MySQL. After deploying the website and notifying users of availability there has been a lot of support tickets for inaccessibility of the website. 400/404 Errors are appearing ‘Website unreachable’. How would you troubleshoot the error? Run the commands that would show you details on why the website may be unreachable (verify each componentWhat is DASH? In DASH (Dynamic, Adaptive Streaming over HTTP), a server divides a video file into chunks that ... (pick best completion from below) Group of answer choices A. ... are stored, each encoded at multiple rates (video quality). The client receives multiple video chunks (encoded at different rates) and plays out the chunks that best fit the screen size. B. ... are download smallest-chunk-first in order to maximize the number of chunks received. C. ... are stored, each encoded at multiple rates (video quality). The client plays the video chunk-by-chunk, with each chunk requested at encoding rate that fits the available bandwidth at the time. D. ... allow premium users to avoid watching chunks that contain commercials. E ... are downloaded just before their playout time. Chunking is used primarily because a viewer may jump around (e.g., fast forward) in a video.Your browser is downloading a news article that consists of some text (0.3 megabits worth) and 5 images, each of which is 8 megabits in size. Assume the RTT is 0.1 seconds and the link bandwidth is 30 megabits-per-second. How long does it take to download the entire web page using persistent HTTP? Round your answer to four decimal places. Notes: You may ignore any size overhead due to the HTTP protocol header or other headers because these will have negligible affect on the overall time. You may ignore any time it takes to terminate the TCP connection because your browser will already have the news article at that point. Assume that the HTTP messages are not pipelined.
- 40.Which of the following is a communication protocol that uses a three-byte frame that travels around a logical ring of workstation or servers?a.Frame ringb. CSMA/CAc. CSMA/CDd.token ringAssume a client is connected to the server and has already received an HTML webpage. It reads the webpage, and it now needs to get 3 new files, File A is 5 MB file B is 1 MB and file C is 1 KB. The client requests the files in the order A B C. The link has an RTT (round trip time) of 0.5 seconds and a bandwidth of 8 Mb/s(Megabits per second) (or 1 Megabyte per second). The client can reuse the open connection if the protocol allows it to. For all parts of this problem ignore header sizes, and start the timer when the client sends How long does it take to get file C under HTTP 0? How long does it take to get file C under HTTP 1 (assume the browser does not support pipeling)? How long does it take to get file C under HTTP 2 assuming a frame size of 1 KB and no server push? What event would make HTTP 3 faster than HTTP 2 for this use case (ignore TLS)?Which of the following is not an issue addressed by Spanning Tree Protocol? Select one: a. Gateway redundancy b. Broadcast storms c. Constant updating of the MAC filter table d. A device receiving multiple copies of the same frame
- 2.2-5 A detailed Look at an HTTP GET (1). Suppose a client is sending an HTTP GET request message to a web server, gaia.cs.umass.edu. Suppose the client-to-server HTTP GET message is the following:GET /kurose_ross_sandbox/interactive/quotation2.htm HTTP/1.1Host: gaia.cs.umass.eduAccept: text/plain, text/html, text/xml, image/jpeg, image/gif, audio/mpeg, audio/mp4, video/wmv, video/mp4,Accept-Language: en-us, en-gb;q=0.1, en;q=0.7, fr, fr-ch, da, de, fiIf-Modified-Since: Wed, 09 Sep 2020 16:06:01 -0700User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11What version of HTTP is the client using?2.2-6 A detailed Look at an HTTP GET (2). Again, suppose a client is sending an HTTP GET request message to a web server, gaia.cs.umass.edu. The client-to-server HTTP GET message is the following (same as in previous problem): GET /kurose_ross_sandbox/interactive/quotation2.htm HTTP/1.1Host: gaia.cs.umass.eduAccept: text/plain, text/html, text/xml, image/jpeg, image/gif, audio/mpeg, audio/mp4, video/wmv, video/mp4,Accept-Language: en-us, en-gb;q=0.1, en;q=0.7, fr, fr-ch, da, de, fiIf-Modified-Since: Wed, 09 Sep 2020 16:06:01 -0700User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11What is the language in which the client would least prefer to get a response? [You may have to search around the Web a bit to answer this.] [Note: you can find additional questions similar to this here.]Please answer the following task using WireShark. Please also include screenshot images. View Image attached! Examine the frame contents for one of the selected packets by expanding the frame, Ethernet andother details in the lower part of the screen. Explain the encapsulation at the different protocol layers that you can observe. How large is the frame?
- Create a web server that Accepts and processes request messages submitted from browser, and Generates and sends response messages back to browser for display. Your web server must be able to handle URL with hostname and port Request message URL: 0.0.1:3000 Response message: “SUCCESS!” URL with hostname, port and path echo Request message URL: 0.0.1:3000/echo Response message: “SUCCESS! echo” URL with hostname, port, path foxtrot and route parameter value kilo Request message URL: 0.0.1:3000/foxtrot/kilo Response message: “SUCCESS! Received kilo via foxtrot” where the value kilo must be retrieved via the route parameter Invalid/unexpected URL Request message URL: 0.0.1:3000/<any other value> Response message: “FAILED! Fix your URL.” Hostname 127.0.0.1 can be replaced by localhost. Port number 3000 can be replaced by any other port number that is from 1024 (2^11) to 65535 (2^17 – 1) inclusive.1- What is the error message that occurs when the manager sends Set_Request to a read-only object? Also, list out any three error messages in SNMP v1. 2- What kind of network management protocols are available? What information can these protocols provide? Explain it with example. 3- Encode 32-bit INTEGER 12 in TLV format? What is the broadband communication system and how broadband network support quality of service (Qos)?Which of the following is NOT part of a Layer 2 Frame? A. Preamble B. Source MAC Address C. Destination IP Address D. Payload E. CRC Error Checking