Network Security Quiz

Match the type of threat with the cause. (Not all options are used.)

A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?

• DoS

• access

• reconnaissance

• Trojan horse

What service is provided by HTTP?

• Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

• Allows for data transfers between a client and a file server.

• An application that allows real-time chatting among remote users.

• A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

• FTP

• DHCP

• Telnet

• SSH

What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)

• Switches become overloaded because they concentrate all the traffic from the attached subnets.

• The ARP request is sent as a broadcast, and will flood the entire subnet.

• The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain.

• A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table.

• All ARP request messages must be processed by all nodes on the local network.

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

• nslookup

• ipconfig

• arp -a

• netsh interface ipv6 show neighbor

• tracert

During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

• analyze the destination IP address

• switch the packet to the directly connected interface

• look up the next-hop address for the packet

• discard the traffic after consulting the route table

What characteristic describes antispyware?

• applications that protect end devices from becoming infected with malicious software

• a network device that filters access and traffic coming into a network

• software on a router that filters traffic based on IP addresses or applications

• a tunneling protocol that provides remote users with secure access into the network of an organization

A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?

• Telnet

• AUX

• SSH

• Console

What are the two most effective ways to defend against malware? (Choose two.)

• Implement network firewalls.

• Implement RAID.

• Implement a VPN.

• Install and update antivirus software.

• Update the operating system and other application software.