You need to enumerate the devices on your network and display the configuration details of the network. The threat agent will obtain information about open ports on the system. Which of the following could result if you do not stop the attack? (Select two.)The system will unavailable to respond to legitimate requests. You suspect that an Xmas tree attack is occurring on a system. This is an example of which kind of attack? DDoS Which of the following is the main difference between a DoS attack and a DDoS attack? The DDoS attack uses zombie computers.Īn attacker sets up 100 drone computers that flood a DNS server with invalid requests. Which ports must be closed to prevent traffic directed to these two services? 23, 21 You have rewritten the security policy to abolish the unsecured services, and now you must secure the network using your firewall and routers.
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Your network recently experienced a series of attacks aimed at the Telnet and FTP services. Which ports must be opened on the firewall to allow this traffic to pass? 80, 443, 22 Your company’s network provides HTTP, HTTPS, and SSH access to remote employees. If you want to allow users to continue to use DNS, which port should you enable? 53 You want to maintain tight security on your internal network so you restrict access to the network through certain port numbers. Communication speed and reducing packet overhead are more important than errorfree delivery. They want to minimize connection times.Ī gaming company wants to create a networked version of its latest game. The communication media is reliable, but very expensive. In which two of the following situations would you select a connectionless protocol? A company connects two networks through an expensive WAN link. You are an application developer creating applications for a wide variety of customers. UDP: connectionless, unreliable, unsequenced, low overhead Which two of the following lists accurately describes TCP and UDP? TCP: connection-oriented, reliable, sequenced, high overhead Be aware that some port numbers may be used more than once. Which of the following network services or protocols uses TCP/IP port 22? SSHĭrag each IP port number on the left to its associated service on the right. Which port needs to be enabled to allow secure transactions? 443 Now, however, though you can browse the Internet, you are unable to perform secure credit card transactions. To increase security on your company’s internal network, the administrator has disabled as many ports as possible.
Which of the following actions is the remote system most likely to be performing? Downloading a file
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Using the Netstat command, you notice that a remote system has made a connection to your Windows Server 2008 system using TCPDownloading a file Which of the following ports does FTP use to establish sessions and manage traffic? 20, 21 Which of the following TCP/IP ports should you open on the firewall? (Select two.)25 You are configuring a network firewall to allow SMTP outbound e-mail traffic, and POP3 inbound e-mail traffic. Which of the following protocols allows hosts to exchange messages to indicate problems with packet delivery? ICMP You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. What should you do? Implement version 3 of SNMP. You are concerned about the security of this configuration.
You have been using SNMP on your network for monitoring and management. Which network IDs will be assigned to these subnets in this configuration? (Select two.)172. 0 network to create four separate subnets.
You’ve decided to use a subnet mask of 255.
Routers operate at what level of the Open System Interconnect model? Network layer Which of the following is a valid IPv6 address? FEC0:: AB: 9007 Which of the following are valid IPv6 addresses? Select all that apply. Which of the following correctly describe the most common format for expressing IPv6 addresses? (Select two.)Hexadecimal numbers Which of the following describes an IPv6 address? (Select two.)Eight hexadecimal quartets Which of the following IPv6 addresses is equivalent to the IPv4 loopback address of 127. Which of the following is not a reason to use subnets on a network? Combine different media type on to the same subnet. Which of the following best describes the purpose of using subnets? Subnets divide an IP network address into multiple network addresses.
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