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you stop the DHCP service‚ the daemon terminates but restarts when you reboot the system. DHCP data tables are not affected when you stop the service. o Enable and disable commands affect the daemon for current and future sessions. If you disable the DHCP service‚ the currently running daemon terminates and does not start when you reboot the server. You must enable the DHCP daemon for the automatic start at system boot to occur. DHCP data tables are not affected. You can disable and enable the
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Backup and Recovery IT388-01 Routing & Switching I November 17‚ 2008 Backup and Recovery 1. Describe the four-step process to locate and load the IOS. The four step process to locate and load the Internetwork Operating System‚ or IOS‚ is known as the boot sequence. These are the steps that a router must follow in order to bring the device into an operational status. The first step is known as POST. POST is a ROM based program that runs whenever the device is booted up. This is where
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Broadcast addresses are used to send traffic to all nodes on a subnet. • Must be configured either manually or through DHCP. • Uses host address (A) resource records in Domain Name System (DNS) to map host names to IPv4 addresses. • Uses pointer (PTR) resource records in the IN-ADDR.ARPA DNS domain to map IPv4 addresses to host names. • Must support a 576-byte packet size (possibly fragmented). IPv6 • Source and destination addresses are 128 bits (16 bytes) in length. • IPSec support is required
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Introduction Bluesky Systems is a software development company that builds software components for a variety of private and government clients. Their current infrastructure is outdated and has been prone to being attacked by hackers that have exploited vulnerabilities in their current DNS causing serious down time. In the last 4 years Bluesky has had to recover from numerous disasters due to a lack of any good business continuity planning. Remote access to the two existing sites is allowed using
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hosted by Domain Controllers (DCs)‚ and all Active Directory integrated zones are primary zones. Given this‚ we’re really talking about where to place Domain Controllers servicing the additional role of DNS server. Determining where to place DCs/DNS servers isn’t always straight-forward. However‚ as a rule of thumb‚ I take the view that any branch location that’s going to be utilize Active Directory services (authentication‚ file services‚ etc)‚ benefits from having a local DC and domain-integrated
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CHAPTER 7 Q1) What does the shell ordinarily do while a command is executing? What should you do if you do not want to wait for a command to finish before running another command? A1) The shell goes to “sleep” until the command has been processed. You can run a program in the background‚ which will allow you to run more than one at a time. Q3) What is a PID number? Why are these numbers useful when you run process in the background? Which utility displays the PID numbers of the commands
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users scattered over five locations. A group of users from the downtown location has called your help desk‚ complaining that they cannot send or receive messages from the Internet‚ although they can receive messages on the college’s internal mail system. List the steps you will take to troubleshoot this problem and describe why each step is necessary. Suppose that your troubleshooting methodology leads you to determine that the problems were caused by a malfunctioning gateway. Suggest ways in which
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DQ1 week 5 What is DNS? How do users benefit from it? Provide a brief description of the DNS process to resolve a URL to its IP address. Domain name systems (DNS) allows for an IP address to be assigned to a computer name or domain name. This system stores given names paired with IP addresses‚ which make identifying a computer on a network that much simpler. DNS follows an top-down heiratage‚ starting at the root on to top level‚ secondary level‚ subdomain level (optional)‚ and host level. Each
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of goods in global supply chain networks is developing on the technical basis of the present Domain Name System; drivers are private actors. Learning from the experiences with the ‘‘traditional’’ Internet governance it is important to tackle the relevant issues of a regulatory framework from the beginning; in particular‚ the implementation of an independently managed decentralized multiple-root system and the establishment of basic governance principles (such as transparency and accountability
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