Chapter 7

You want to increase the security of your network by allowing only authenticated users to be able to access network devices through a switch. Which of the following should you implement? IPsec Spanning tree Port security 802.1x

802.1x

You are concerned about protecting your network from network-based attacks from the Internet. Specially, you are concerned about attacks that have not yet been identified or that do not have prescribed protections. Which type of device should you use? Antivirus scanner Anomaly based IDS Signature based IDS Network based firewall Host based firewall

Anomaly based IDS

What is the most common form of host based IDS that employs signature or pattern matching detection methods? Motion detectors Honey pots Firewalls Antivirus software

Anti-virus software

You are the network administrator for a city library. Throughout the library are several groups of computers that provide public access to the Internet. Supervision of these computers has been difficult. You've had problems with patrons bringing personal laptops into the library and disconnecting the network cables from the library computers to connect their laptops to the Internet. The library computers are in groups of four. Each group of four computers is connected to a hub that is connected to the library network through an access point on a switch. You want to restrict access to the network so only the library computers are permitted connectivity to the internet. What can you do? Remove the hub and place each library computer on its own access port. Create static MAC addresses for each computer and associate it with a VLAN. Create a VLAN for each group of four computers. Configure port security on the switch

Configure port security on the switch

Which of the following applications typically use 802.1x authentication? select two Controlling access through a wireless access point Controlling access through a switch Authenticating remote access clients Authenticating VPN users through the Internet Controlling access through a router

Controlling access through a wireless access point Controlling access though a switch

Which of the following best describes the concept of virtual LAN? Devices connected by a transmission medium other than cable (i.e. microwave, radio transmissions) Devices in separate networks (i.e. different network addresses) logically grouped as if they were in the same network Devices on different networks that can receive multicast packets Devices on the same network logically grouped as if they were on separate networks

Device on the same network logically grouped as if they were on separate networks

If maintaining confidentiality is of the utmost importance to your organization, what is the best response when an intruder is detected on your network? Disconnect the intruder Delay the intruder Record audit trails about the intruder Monitor the intruder's actions

Disconnect the intruder

You have configured a NIDS to monitor network traffic. Which of the following describes an attack that is not detected by the NIDS device? Negative False positive Positive False negative

False negative

What do host based intrusion detection systems often rely upon to perform their detection activities? External sensors Network traffic Remote monitoring tools Host system auditing capabilities

Host system auditing capabilities

Which of the following devices is capable of detecting and responding to security threats? IPS Multilayer switch DNS server IDS

IPS

Your organization uses a Web server to host an e-commerce site.... The security control must be able to identify malicious payloads and block them.What should you do? Install an antimalware scanner on the Web server. Implement an applicationaware IPS in front of the Web server. Implement an applicationaware IDS in front of the Web server. Implement a stateful firewall in front of the Web server. Implement a packetfiltering firewall in front of the Web server

Implement an application-aware IPS in front of the Web server.

Which of the following activities are considered passive in regards to the functioning of an IDS? select two Listening to network traffic Monitoring the audit trails on a server Disconnecting a port being used by a zombie Transmitting FIN or RES packets to an external host

Monitoring the audit trails on a server Listening to network traffic

In the lobby of your building are three RJ-45 ports connected to the switch. You want to make sure that visitors cannot plug in their computer to the free network jacks and connect to the network. However, employees who plug into those same jacks should be able to connect to the network. What feature should you configure? Bonding Port authentication Spanning tree Mirroring VLANs

Port authentication

Which IDS method searches for intrusion or attack attempts by recognizing patterns or identities listed in a database? Heuristics based Stateful inspection based Anomaly analysis based Signature based

Signature based

Which of the following solutions would you implement to eliminate switching loops? Intervlan routing Autoduplex CSMA/CD Spanning tree

Spanning Tree

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active path between any two switches? Trunking 802.1x Bonding PoE Spanning tree

Spanning tree

A virtual LAN can be created using which of the following? Router Hub Switch Gateway

Switch

When configuring VLANs on a switch, what is used to identify VLAN membership of a device? Hostname IP address Switch port MAC address

Switch port

What actions can a typical passive intrusion Detection System (IDS) take when it detects and attack? select two An alert is generated and delivered via email, the console, or an SNMP trap. The IDS configuration is changed dynamically and the source IP address is banned. LAN side clients are halted and removed from the domain. The IDS logs all pertinent data about the intrusion.

The IDS logs all pertinent data about the intrusion An alert is generated and delivered via email, the console, or an SNMP trap

A honey pot is used for what purpose? To prevent sensitive data from being accessed To disable an intruder's system To delay intruders in order to gather auditing data

To delay intruders in order to gather auditing data

When configuring VLANs on a switch, what type of switch ports are members of all VLANs defined on the switch? Uplink ports Gigabit and higher Ethernet ports Any port not assigned to a VLAN Trunk ports Each port can only be a member of a single VLAN

Trunk ports

An active IDS system often performs which of the following actions? select two Trap and delay the intruder until the authorities arrive. Perform reverse lookups to identify an intruder. Request a second logon test for users performing abnormal activities. Update filters to block suspect traffic.

Update filters to block suspect traffic perform reverse lookups to identify an intruder

You have just installed a new network-based IDS system that uses signature recognition. What should you do on a regular basis? Generate a new baseline Update the signature files Check for backdoors Modify clipping levels

Update the signature files

You run a small network for your business that has a single router connected to the internet and a single switch. You keep sensitive doc. on a computer that would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. What should you implement? VLAN Spanning tree Port security VPN

VLAN

Your company is a small start-up company that has leased office in a building shared by other businesses. All businesses share a common network infrastructure. A single switch connects all devices in the building to the router that provides Internet access. You would like to make sure that your computers are isolated from computers used by other companies. Which feature should you request to have implemented? Spanning tree Port security VLAN

VLAN

You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ-45 ports connected to the switch. You want to allow visitors to plug into these ports to gain Internet Access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and Internet access. Which feature should you implement? DMZ VLANs NAT Port authentication

VLANs

In which of the following situations would you use port security? You want to control the packets sent and received by a router. You want to restrict the devices that could connect through a switch port. You want to prevent sniffing attacks on the network. You want to prevent MAC address spoofing.

You wanted to restrict the devices that could connect through a switch port

Which of the following describes a false positive when using an IPS device? The source address matching the destination address Legitimate traffic being flagged as malicious Malicious traffic not being identified Malicious traffic masquerading as legitimate traffic The source address identifies a nonexistent host

Legitimate traffic being flagged as malicious

You want to create a collection of computers on your network that appear to have valuable data, but are really computers configured with fake data that could entice a potential intruder. Once the intruder connects, you want to be able to observe and gather information about the methods of attack that is being deployed. What should you implement? NIDS NIPS Honeynet Extranet

Honeynet

You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one link goes down, an alternate path is available. What feature should your switch support? Spanning tree Trunking Mirroring PoE

Spanning tree