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Infrastructure Security Practice Exam Questions

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Whether you are managing IT infrastructure, writing code or developing improved applications, you need to be concerned about security. This chapter gives you a taste of the the objectives, answers and explanations you'll need for the Infrastructure Security portion of the Security+ Certification Exam.
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Objective 3.1: Devices

  1. Your company has a large internal network that you would like to subnet into smaller parts. Which of the following devices can you use to separate your LAN and still protect critical resources? (Select all that apply.)

    1. An internal firewall

    2. A router between subnets

    3. A modem between computers

    4. A switch between departments

  2. Which of the following are considered to be possible components of an ethernet LAN? (Select all that apply.)

    1. Access Point (AP)

    2. Coax

    3. Fiber

    4. STP

  3. Which of the following devices is specially designed to forward packets to specific ports based on the packet's address?

    1. Specialty hub

    2. Switching hub

    3. Port hub

    4. Filtering hub

Objective 3.1.1: Firewalls

  1. Your company receives Internet access through a network or gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server?

    1. DSL modem

    2. A multi-homed firewall

    3. VLAN

    4. A brouter that acts both as a bridge and a router

  2. What are some of the benefits of using a firewall for your LAN? (Select all that apply.)

    1. Increased access to Instant Messaging

    2. Stricter access control to critical resources

    3. Greater security to your LAN

    4. Less expensive than NAT servers

  3. Which of the following are true about firewalls? (Select all that apply.)

    1. Filters network traffic

    2. Can be either a hardware or software device

    3. Follows a set of rules

    4. Can be configured to drop packets

  4. Which of the following are true about firewall protection when using static packet filtering on the router? (Select all that apply.)

    1. Static packet filtering is less secure than stateful filtering

    2. Static packet filtering is less secure than proxy filtering

    3. Static packet filtering is more secure than dynamic packet filtering

    4. Static packet filtering is more secure than stateful filtering

  5. A packet filtering firewall operates at which of the following OSI layers? (Select all that apply.)

    1. At the Application layer

    2. At the Transport layer

    3. At the Network layer

    4. At the Gateway layer

  6. Firewalls are designed to perform all the following except:

    1. Limiting security exposures

    2. Logging Internet activity

    3. Enforcing the organization's security policy

    4. Protecting against viruses

  7. Stateful firewalls may filter connection-oriented packets that are potential intrusions to the LAN. Which of the following types of packets can a stateful packet filter deny?

    1. UDP

    2. TCP

    3. IP

    4. ICMP

  8. Which of the following systems run an application layer firewall using Proxy software?

    1. Proxy NAT

    2. Proxy client

    3. Client 32

    4. Proxy server

  9. Which of the following use routers with packet filtering rules to allow or deny access based on source address, destination address, or port number?

    1. Application layer firewall

    2. Packet filtering firewall

    3. Router enhanced firewall

    4. IP enabled firewall

  10. Which of the following firewalls keeps track of the connection state?

    1. Application layer firewall

    2. Packet filtering firewall

    3. Router enhanced firewall

    4. Stateful packet filtering firewall

Objective 3.1.2: Routers

  1. Which of following devices discriminates between multicast and unicast packets?

    1. Multicast switch

    2. Bicast switch

    3. Bicast router

    4. Multicast router

  2. Your primary concern is LAN security. You want to subnet your internal network with a device that provides security and stability. Which of the following devices do you choose to meet these needs?

    1. Static router

    2. Dynamic router

    3. Static switch

    4. Dynamic switch

  3. Which of the following will help you to improve your LAN security? (Select all that apply.)

    1. Change user passwords frequently

    2. Install a firewall program

    3. Use a dynamic rather than static router

    4. Use a proxy

  4. Which of the following is the most difficult to configure, but safest device to use on a LAN?

    1. Static router

    2. IP enabled router

    3. Dynamic router

    4. RIP enabled router

  5. Which of the following statements are true about routers and bridges? (Select all that apply.)

    1. Bridges connect two networks at the Data Link Layer

    2. Bridges are types of inexpensive routers

    3. Routers are improved bridges

    4. Routers connect two networks at the Network Layer

  6. Remember, routers work at the Network Layer of the International Standards Organization/Open Systems Interconnection (ISO/OSI) established sequence of OSI Layers. What is the correct and complete OSI sequence in order from user interface (Layer 7) to the delivery of binary bits (Layer 1)?

    1. Physical Layer, Network Layer, Data Link Layer, Transport Layer, Session Layer, Presentation Layer, Application Layer

    2. Application Layer, Presentation Layer, Session Layer, Transport Layer, Network Layer, Data Link Layer, Physical Layer

    3. Application Layer, Physical Layer, Session Layer, Transport Layer, Network Layer, Data Link Layer, Presentation Layer

    4. Physical Layer, Data Link Layer, Network Layer, Session Layer, Transport Layer, Presentation Layer, Application Layer

  7. Most networks employ devices for routing services. Routers work at which of the following OSI layers?

    1. Transport

    2. Network

    3. Presentation

    4. Session

Objective 3.1.3: Switches

  1. You manage a company network and the network budget. You want to minimize costs, but desire to prevent crackers from sniffing your local network (LAN). Which of the following devices would you recommend to meet your goals?

    1. Hub

    2. Switch

    3. Router

    4. Firewall

  2. Which of the following statements apply to security concerns when using a switch in the LAN? (Select all that apply.)

    1. Switches use SSH to manage interfaces by default

    2. Switches use Telnet or HTTP to manage interfaces

    3. Switches are more secure than routers since they are internal to the LAN

    4. Switches should be placed behind a dedicated firewall

  3. Which of following is a type of hub that forwards packets to an appropriate port based on the packet's address?

    1. Smart hub

    2. Switching hub

    3. Routing hub

    4. Porting hub

Objective 3.1.4: Wireless

  1. Which of the following is actually considered a critical wireless device?

    1. AP

    2. WAP

    3. WEP

    4. WLAN

Objective 3.1.5: Modems

  1. Which of the following are true statements about modems? (Select all that apply.)

    1. Modems use the telephone lines

    2. Modem stands for modulator and demodulator

    3. Modems are no longer used in secure networks

    4. A modem's fastest transfer rate is 56 Kbps

  2. Modems can be configured to automatically answer any incoming call. Many user computers have modems installed from the manufacturer. What is the greatest security risk when dealing with modems in this situation?

    1. Remote access without network administrator knowledge

    2. Local access without network administrator knowledge

    3. Client access without network administrator knowledge

    4. Server access without network administrator knowledge

Objective 3.1.6: RAS

  1. Which of the following terms defines RAS?

    1. Random Access Security

    2. Remote Access Security

    3. Random Access Service

    4. Remote Access Service

  2. Usually, a RAS connection is a dial-up connection. What network connections also apply to RAS? (Select all that apply.)

    1. Client–Server

    2. ISDN

    3. VPN

    4. DSL

Objective 3.1.7: Telecom/PBX

  1. Your company has gone through several phone company changes to reduce costs. Last week, two new phone company employees indicated that they needed remote access to your company network and wanted to establish a permanent guest account on your RAS server for continued maintenance support. Which of the following actions are your best recommendations for this situation? (Select all that apply.)

    1. Agree with their requests so that maintenance costs are reduced

    2. Recommend that user accounts be verified with strong authentication

    3. Remove the guest account and create verifiable remote accounts

    4. Create a phone company group account and place that inside the guest account

  2. Which of the following applies to PBX? (Select all that apply.)

    1. PBX stands for Private Branch Exchange

    2. PBX allows for analog, digital, and data to transfer over a high-speed phone system

    3. PBX stands for Public Broadcasting Exchange

    4. PBX is used to carry analog messages and modem communication originating at the phone company

Objective 3.1.8: VPN

  1. You want to have a private communication between two sites that also allows for encryption and authorization. Which of the following is the best choice in this instance?

    1. Modem

    2. Firewall

    3. VPN

    4. Bastion Host

  2. VPN tunnels have end points. Which of the following methods is used to offer Strong Authentication at each end point?

    1. DES

    2. Block cipher

    3. Stream cipher

    4. Diffie-Hellman

  3. VPNs transfer encrypted data through tunneling technology. Which of the following performs fast data encryption and may be used with VPNs?

    1. Stream cipher

    2. RSA

    3. DES

    4. IPSec

  4. You desire to secure a VPN connection. Which protocols should you use? (Select all that apply.)

    1. TLS

    2. IPSec

    3. SSL

    4. L2TP

Objective 3.1.9: IDS

  1. What does the acronym IDS stand for?

    1. Intrusion Detection System

    2. Internet Detection Standard

    3. Internet Detection System

    4. Intrusion Detection Standard

  2. Which of the following devices is used to monitor network traffic, including DoS attacks in real time?

    1. A host-based Intrusion Detection System

    2. A network-based Intrusion Detection System

    3. A router-based Intrusion Detection System

    4. A server-based Intrusion Detection System

  3. Which of the following security devices acts more like a detective rather than a preventative measure?

    1. IDS

    2. DMZ

    3. NAT

    4. Proxy

Objective 3.1.10: Network Monitoring/Diagnostic

  1. Which of the following protocols is used to monitor network devices such as hubs, switches, and routers?

    1. SMTP

    2. SNMP

    3. RIP

    4. OSPF

  2. You have been using a network monitor or protocol analyzer to monitor ethernet packets. One of the messages sent has an IP header protocol field value of "1". What does this value classify?

    1. UDP

    2. ICMP

    3. IGMP

    4. TCP

  3. You have been using a network monitor or protocol analyzer to monitor ethernet packets. One of the messages sent has an IP header protocol field value of "6". What does this value classify?

    1. UDP

    2. ICMP

    3. IGMP

    4. TCP

Objective 3.1.11: Workstations

  1. Which of the following LAN devices is frequently a source of security concern because of its ability to process applications, share files, and perform network services in a peer-to-peer network?

    1. SQL Servers

    2. Routers

    3. Switches

    4. Workstations

  2. You want to prevent users from downloading software on company workstations. What is this called?

    1. Desktop lookup

    2. Desktop lockup

    3. Desktop lockdown

    4. Desktop lookdown

Objective 3.1.12: Servers

  1. Which of the following is a group of independent servers that are grouped together to appear like one server?

    1. Proxy Server

    2. SQL Server

    3. Server Array

    4. Server Cluster

  2. Which of the following devices have similar security concerns because they provide file sharing, network connection, and application services? (Select all that apply.)

    1. Switches

    2. Routers

    3. Workstations

    4. Servers

3.1.13. Mobile Devices

  1. Many mobile devices use wireless technology and may lack security. Which of the following devices are considered mobile devices used to connect to a network? (Select all the apply.)

    1. PDR

    2. PDA

    3. Pager

    4. PPP

  2. Which one of the following is a small network device that is a security concern for network administrators because the device is easily misplaced?

    1. Workstation

    2. Server

    3. Mobile device

    4. VPN

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