Perimeter

A salesperson in your organization spends most of her time traveling between customer sites. After a customer visit, she must complete various managerial tasks, such as updating your organization's order database. Because she rarely comes back to your home office, she usually accesses the network from her notebook computer using Wi-Fi access provided by hotels, restaurants, and airports. Many of these locations provide unencrypted public Wi-Fi access, and you are concerned that sensitive data could be exposed. To remedy this situation, you decide to configure her notebook to use a VPN when accessing the home network over an open wireless connection. Which key steps should you take when implementing this configuration? (Select two.)

Configure the browser to send HTTPS requests through the VPN connection Configure the VPN connection to use IPsec

As the victim of a Smurf attack, what protection measure is the most effective during the attack?

Communicate with your upstream provider

In a NAP system, what is the function of the System Health Validator?

Compare the statement of health submitted by the client to the health requirements

Which step is required to configure a NAP on a Remote Desktop (RD) gateway server?

Edit the properties for the server and select Request clients to send a statement of health

In addition to Authentication Header (AH), IPSec is comprised of what other service?

Encapsulating Security Payload (ESP)

You are investigating the use of website and URL content filtering to prevent users from visiting certain websites. Which benefits are the result of implementing this technology in your organization? (Choose two.)

Enforcement of the organization's internet usage policy An increase in bandwidth availability

Application-aware firewall

Enforces security rules based on the application that is generating network traffic instead of the traditional port and protocol

What is the goal of a TCP/IP hijacking attack?

Executing commands or accessing resources on a system the attacker does not otherwise have authorization to access.

Which of the following are characteristics of a packet filtering firewall? (Select two.)

Filters IP address and port stateless

Which of the following are characteristics of a circuit-level gateway? (Select two.)

Filters based on sessions Stateful

Application-aware proxy

Improves application performance

Which of the following is not a benefit of NAT?

Improving the throughput rate of traffic

Which of the following is the most effective protection against IP packet spoofing on a private network?

Ingress and egress filters

You would like to control Internet access based on users, time of day, and websites visited. How can you do this?

Install a proxy server. Allow Internet access only through the proxy server.

PPTP (Point-to-Point Tunneling Protocol) is quickly becoming obsolete because of which VPN protocol?

L2TP (Layer 2 Tunneling Protocol)

Your organization's security policy requires you to restrict network access to allow only clients that have their firewall enabled. Which of the following is a collection of components that would allow you to meet this requirement?

Network access protection

You manage a small network at work. Users use workstations connected to your network. No portable computers are allowed. As part of your security plan, you would like to implement scanning of e-mails for all users. You want to scan the e-mails and prevent any e-mails with malicious attachments from being received by users. Your solution should minimize administration, allowing you to centrally manage the scan settings. Which solution should you use?

Network based firewall

Your company has a connection to the internet that allows users to access the internet. You also have a web server and an email server that you want to make available to internet users. You want to create a DMZ for these two servers. Which type of device should you use to create the DMZ?

Network-based firewall

Which of the following are true of a circuit proxy filter firewall? (Select two.)

Operates at the Session layer. Verifies sequencing of session packets.

Which of the following is a firewall function?

Packet filtering

Which of the following is the main difference between a DoS attack and a DDoS attack?

The DDoS attack uses zombie computers.

Which statement best describes IPSec when used in tunnel mode?

The entire data packet, including headers, is encapsulated

You have a company network that is connected to the internet. You want all users to have internet access, but you need to protect your private network and users. You also need to make a web server publicly available to internet users. Which solution should you use?

Use firewalls to create a DMZ. Place the web server inside the DMZ and the private network behind the DMZ.

You need to implement a wireless network link between two buildings on a college campus. A wired network has already been implemented within each building. The buildings are 100 meters apart. What type of wireless antennae should you use on each side of the link? (Select two.)

high gian parabolic

When the TCP/IP session state is manipulated so that a third party is able to insert alternate packets into the communication stream, what type of attack has occurred?

hijacking

You have been given a laptop to use for work. You connect the laptop to your company network, use it from home, and use it while traveling. You want to protect the laptop from Internet-based attacks. Which solution should you use?

host based firewall

Which of the following is the best countermeasure against man-in-the-middle attacks?

ip[sec

Which of the following does a router acting as a firewall use to control which packets are forwarded or dropped?

acl

Which VPN protocol typically employs IPSec as its data encryption mechanism?

l2tp

A SYN packet is received by a server. The SYN packet has the exact same address for both the sender and receiver addresses, which is the address of the server. This is an example of what type of attack?

land attack

When a SYN flood is altered so that the SYN packets are spoofed in order to define the source and destination address as a single victim IP address, the attack is now called what?

land attack

Capturing packets as they travel from one host to another with the intent of altering the contents of the packets is a form of which attack type?

man in the middle attack

A router on the border of your network detects a packet with a source address that is from an internal client, but the packet was received on the internet-facing interface. This is an example of what form of attack?

spoofing

Which type of activity changes or falsifies information in order to mislead or re-direct traffic?

spoofing

You are the network administrator for a small company that implements NAT to access the internet. However, you recently acquired five servers that must be accessible from outside your network. Your ISP has provided you with five additional registered IP addresses to support these new servers, but you don't want the public to access these servers directly. You want to place these servers behind your firewall on the inside network, yet still allow them to be accessible to the public from the outside. Which method of NAT translation should you implement for these servers?

static

In which of the following denial of service (DoS) attacks does the victim's system rebuild invalid UDP packets, causing the system to crash or reboot?

teardrop

What encryption method is used by WPA for wireless networks?

tkip

Which is the best countermeasure for someone attempting to view your network traffic?

vpn

A group of salesmen would like to access your private network through the internet while they are traveling. You want to control access to the private network through a single server. Which solution should you implement?

vpn concentrator

Short initialization vector makes key vulnerable.

wep

Uses RC4 for encryption.

wep

Which of the following offers the weakest form of encryption for an 802.11 wireless network?

wep

Uses TKIP for encryption.

wpa

Uses AES for encryption.

wpa2

virus blockers

Identifies and disposes of infected content

Which of the following terms describes a network device that is exposed to attacks and has been hardened against those attacks?

Bastion or sacrificial host

Which of the following features are supplied by WPA2 on a wireless network?

encryption

Which IPSec subprotocol provides data encryption?

esp

Which of the following is a privately controlled portion of a network that is accessible to some specific external entities?

extranet

Which of the following are functions of gateway email spam blockers? (Select two.)

Blocks email from specific senders Filters messages containing specific content

Which of the following is the best device to deploy to protect your private network from a public untrusted network?

firewall

Which of the following is likely to be located in a DMZ?

ftp server

An attacker is conducting passive reconnaissance on a targeted company. Which of the following could he be doing?

Browsing the organization's website

How does IPsec NAP enforcement differ from other NAP enforcement methods?

Clients must be issued a valid certificate before a connection to the private network is allowed.

When a malicious user captures authentication traffic and replays it against the network later, what is the security problem you are most concerned about?

An unauthorized user gaining access to sensitive resources

Application-aware IDS

Analyzes network packets to detect malicious payloads targeted at application-layer services

When designing a firewall, what is the recommended approach for opening and closing ports?

Close all ports; open only ports required by applications inside the DMZ.

Which of the following is not one of the IP address ranges defined in RFC 1918 that are commonly used behind a NAT server?

169.254.0.0 - 169.254.255.255

Which of the following specifications identify security that can be added to wireless networks? (Select two.)

802.11i 802.1x

Which of the following describes a man-in-the-middle attack?

A false server intercepts communications from a client by impersonating the intended server.

A SYN attack or SYN flood exploits or alters which element of the TCP three-way handshake?

ACK

You need to configure a wireless network. You want to use WPA2 Enterprise. Which of the following components will be part of your design? (Select two.)

AES encryption 802.1x

You are the office manager of a small financial credit business. Your company handles personal financial information for clients seeking small loans over the internet. You are aware of your obligation to secure clients records. Budget is an issue for your company. Which item would provide the best security for this situation?

All-in-one security appliance

Which of the following best describes the ping of death?

An ICMP packet that is larger than 65,536 bytes

Which of the following describes how access lists can be used to improve network security?

An access list filters traffic based on the IP header information such as source or destination IP address, protocol, or socket numbers.

Which of the following firewall types can be a proxy between servers and clients? (Select two.)

Application layer firewall Circuit proxy filtering firewall

You need to configure the wireless network card to connect to your network at work. The connection should use a user name and password for authentication with AES encryption. What should you do?

Configure the connection to use WPA2-Enterprise.

Which of the following is not a protection against session hijacking?

DHCP reservations

Which attack form either exploits a software flaw or floods a system with traffic in order to prevent legitimate activities or transactions from occurring?

Denial of service attack

Which of the following are denial of service attacks? (Select two.)

Fraggle smurf

anti phishing software

Prevents outside attempts to access confidential information

gateway email spam blockers

Prevents unwanted email from reaching your network

Web threat filtering

Prevents users from visiting malicious websites

url content filtering

Prevents users from visiting restricted websites

You have used firewalls to create a demilitarized zone. You have a web server that needs to be accessible to internet users. The web server must communicate with a database server for retrieving product, customer, and order information. How should you place devices on the network to best protect the servers? (Select two.)

Put the database server on the private network. Put the web server inside the DMZ.

You have a company network with a single switch. All devices connect to the network through the switch. You want to control which devices are able to connect to your network. For devices that do not have the latest operating system patches, you want to prevent access to all network devices except for a special server that holds the patches that the computers need to download. Which of the following components will be part of your solution? (Select two.)

Remediation servers 802.1x authentication

You are implementing security at a local high school that is concerned with students accessing inappropriate material on the internet from the library's computers. The students will use the computers to search the internet for research paper content. The school budget is limited. Which content filtering option would you choose?

Restrict content based on content categories

You have a small network at home that is connected to the internet. On your home network, you have a server with the IP address of 192.168.55.199/16. You have a single public address that is shared by all hosts on your private network. You want to configure the server as a web server and allow internet hosts to contact the server to browse a personal website. What should you use to allow access?

Static NAT

A VPN is primarily used for what purpose?

Support secured communications over an untrusted network

What is the primary use of tunneling?

Supporting private traffic through a public communication medium

You suspect that an Xmas tree attack is occurring on a system. Which of the following could result if you do not stop the attack? (Select two.)

The threat agent will obtain information about open ports on the system. The system will be unavailable to respond to legitimate requests.

Which of the following is a valid security measure to protect email from viruses?

Use blockers on email gateways

Which of the following wireless security methods uses a common shared key configured on the wireless access point and all wireless clients?

WEP, WPA Personal, and WPA2 Personal

In which of the following situations would you most likely implement a demilitarized zone (DMZ)?

You want to protect a public web server from attack.

You provide internet access for a local school. You want to control Internet access based on user, and prevent access to specific URLs. Which type of firewall should you install?

application level

Which of the following attacks tries to associate an incorrect MAC address with a known IP address?

arp poisoning

What are the most common network traffic packets captured and used in a replay attack?

authentification

You want to install a firewall that can reject packets that are not part of an active session. Which type of firewall should you use?

circuit level

Which of the following prevents access based on website ratings and classifications?

content filter

Of the following security zones, which one can serve as a buffer network between a private secured network and the untrusted internet?

dmz

While using the internet, you type the URL of one of your favorite sites in the browser. Instead of going to the correct site, however, the browser displays a completely different website. When you use the IP address of the web server, the correct site is displayed. Which type of attack has likely occurred?

dns poisoning

You want to connect your small company network to the internet. Your ISP provides you with a single IP address that is to be shared between all hosts on your private network. You do not want external hosts to be able to initiate connection to internal hosts. What type of network address translation (NAT) should you implement?

dynamic

Members of the sales team use laptops to connect to the company network. While traveling, they connect their laptops to the internet through airport and hotel networks. You are concerned that these computers will pick up viruses that could spread to your private network. You would like to implement a solution that prevents the laptops from connecting to your network unless anti-virus software and the latest operating system patches are installed. Which solution should you use?

nac

Which of the following networking devices or services prevents the use of IPSec in most cases?

nat

You need to enumerate the devices on your network and display the network's configuration details. Which of the following utilities should you use?

nmap

Which type of active scan turns off all flags in a TCP header?

null

An attacker uses an exploit to push a modified hosts file to client systems. This hosts file redirects traffic from legitimate tax preparation sites to malicious sites to gather personal and financial information. What kind of exploit has been used in this scenario? (Choose two. Both responses are different names for the same exploit.)

pharming dns poisoning

Which of the following denial of service (DoS) attacks uses ICMP packets and is only successful if the victim has less bandwidth than the attacker?

ping flood

Which of the following is a form of denial of service attack that uses spoofed ICMP packets to flood a victim with echo requests using a bounce/amplification network?

smurf

What is modified in the most common form of spoofing on a typical IP packet?

source address