Assume we need to provide an additional hostname record for an existing host. Which of the below is the convenient DNS record?
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A: type 1 - host is unreachable type 2 - protocol is unreachable type 3 - port is unreachable
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A:
Q: a. Find the subnet mask b. How many valid hosts are created? c. Find the first and last host address…
A: The answer is
Q: Which of these HTTP headers is used by a web cache in deciding whether an object needs to be…
A: The answer is given below:-
Q: Suppose a user has a webserver running at a machine with the name www.nadir.edu.net.pk and IP…
A: Suppose a user has a webserver running at a machine with the name www.nadir.edu.net.pk and IP…
Q: An organization is granted the block 150.100.50.0 /24. The administrator wants to create 64 subnets,…
A:
Q: Write client-side code that asynchronously makes a request to obtain json data from local host…
A: Write client-side code that asynchronously makes a request to obtain json data from local host…
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A:
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Q: Host A sends a UDP datagram containing 8880 bytes of user data to host B over an Ethernet LAN.…
A: The Answer is in Below steps
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Q: What does it mean when someone refers to DHCP, or dynamic host configuration protocol
A: Please find the answer below
Q: The maximum value of a TTL for a DNS resource record (RR) is 2147483647 seconds. What is the primary…
A: The answer is
Q: Suppose a DNS resource record has the type of MX. Then the value of the record is .
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A: Question 1 and Question 2 answers are given below
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A: Actually, IP stands for Internet Protocol.
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Q: What are the source and destination IP addresses of the frame's network-layer header? Is this an…
A: Source IP: 192.168.1.121Destination IP: 52.114.128.71
Q: If DNS searching happens once every 10 minutes, and each time the HTTP file references 8 items, how…
A: Introduction : HTTP mostly relies on TCP for its transport protocol , providing a…
Q: e a session with a host at 208.85.40.44:443. For this session, what protocol is being used?
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- Write a small program/script to resolve all DNS hostnames of Southeastern's ranging from 0 to 255 for the third and fourth octet in 147.174.$i.$j/16. Use any language you like (Bash, PowerShell, Python, Java). Paste the contents of your program below.To test DNS configuration by resolving a host name to an IP address, which commandor commands can you use? (Choose all that apply.)a. nslookup hostnameb. dig hostnamec. host hostnamed. resolve hostnameYou have sent a file from Host A to Host B, in which format that file will be received at Application layer? a. Packets b. Segments c. Data d. Frames
- A.Which of the following protocols keeps all potential paths active while managing the flow of data across the paths to prevent loops? 1.TRILL 2.CARP 3.SPB 4.RSTPDistinguish between DNS records of different kinds. Each of them will be briefly discussed, with examples and arguments provided for their application. Having the same hostname alias for both your web and mail servers is feasible inside the same company.Write client-side code that asynchronously makes a request to obtain json data from local host running at port 3456 at url “/books” using a saga.
- Write a snort rule to generate an alert for the following: search for the word “HTTP” in the first 20bytes of the payload of a packet that is originating in subnet (192.168.34.0/24) and going toyour subnet (192.168.56.0/24). The alert should read: “HTTP detected”. Could you please also include the nmap command used to scan the target?A single link between two hosts can be used to send more than one file. Please tell me when shipments can be cleared. Is there a set amount of time for one wait and some flexibility with the other?Suppose a client sends an HTTP request message with the If-modified-since header. Sup- pose the object in a server has not changed since the last time a client retrieved the object. Then the server will send a response message with the status code: A. 200 OK B. 404 Not Found C. 304 Not Modified D. none of the above
- Assume a web server can only receive TCP connections on port 80 (HTTP) and 22 (SSH), but not on any other ports. The web server can only establish connection to a database server hosted on private IP 192.168.100.100 on port 3000, but to no other machines inside or outside the network. Imagine this web server is running Linux, and we’re using iptables to define host-based firewall rules for it. Show the set of iptables commands to install necessary rules for this security policy.An attacker tries to do banner grabbing on a remote web server and executes the following command:$ nmap -sV hackme.com -p 80 He gets the following output:Starting Nmap 7.90 ( http://nmap.org ) at 2020-09-26 22:47 ESTNmap scan report for hackme.com (108.58.137.114)Host is up (0.048s latency).PORT STATE SERVICE VERSION80/tcp open http Apache httpdService detection performed. Please report any incorrect results at http://nmap.org/submit/.Nmap done: 1 IP address (1 host up) scanned in 7.36 seconds What did the hacker accomplish? nmap can’t retrieve the version number of any running remote service. The hacker successfully completed the banner grabbing. The hacker should have used nmap -O host.domain.com. The hacker failed to do banner grabbing as he didn’t get the version of the Apache web server.Suppose a user has a webserver running at a machine with the name nadir.edu.net.pk and IP address 10.10.10.10. The authoritative DNS address for this web server is with the name dns.nadir.edu.net.pk and with IP address 11.11.11.11. Write all the steps involved in retrieving the IP address of nadir.edu.net.pk