Chapter 10 - Security in Network Design

Question 1

Proxy servers and ACLs on network devices are examples of non-security devices with security features, while firewalls and IDS/IPS systems are the network’s specialized security devices.

Answer 1

True

Question 2

A stateless firewall inspects each incoming packet to determine whether it belongs to a currently active connection

Answer 2

False

Question 3

The Spanning Tree Protocol operates at the Network layer of the OSI model.

Answer 3

False

Question 4

The storm-control command is a type of flood guard that is available on most major network switch vendor platforms.

Answer 4

True

Question 5

User access to network resources falls into one of these two categories: 1) the privilege or right to execute, install, and uninstall software, and 2) permission to read, modify, create, or delete data files and folders

Answer 5

True

Question 6

Of the three methods of access control (RBAC, DAC, and MAC), RBAC is the least secure of the options.

Answer 6

False

Question 7

By default, Active Directory is configured to use the Kerberos protocol, but can be configured to use LDAP or a combination of LDAP and Kerberos.

Answer 7

True

Question 8

When utilizing Kerberos, an access granting ticket is the same as a key.

Answer 8

False

Question 9

The supplicant is an EAP entity responsible for requesting authentication, such as a smartphone or laptop.

Answer 9

True

Question 10

The PEAP standard creates an encrypted TLS tunnel between the supplicant and the server before proceeding with the usual EAP process.

Answer 10

True

Question 11

Which of the following is an example of proxy server software?

Answer 11

Squid

Question 12

What is NOT a variable that an network access control list can filter traffic with?

Answer 12

The operating system used by the source or destination device.

Question 13

In ACL statements, using the “any” keyword is equivalent to using a wildcard mask of what value?

Answer 13

255.255.255.255

Question 14

What kind of firewall can block designated types of traffic based on application data contained within packets?

Answer 14

content-filtering firewall

Question 15

On a Linux system, which command allows you to modify settings used by the builtin packet filtering firewall?

Answer 15

iptables

Question 16

What is a SIEM (Security Information and Event Management) system utilized for?

Answer 16

It is a system used to evaluate data from security devices and generate alerts.

Question 17

When using Spanning Tree Protocol, what is the first step in selecting paths through a network?

Answer 17

STP must first select the root bridge, or master bridge.

Question 18

In order to prevent ports that are serving network hosts from being considered as best paths, what should be enabled to block BPDUs?

Answer 18

BPDU guard

Question 19

Which protocol designed to replace STP operates at Layer 3 of the OSI model?

Answer 19

Shortest Path Bridging (SPB)

Question 20

You have been tasked with the configuration of a Juniper switch, and have been told to restrict the number of MAC addresses allowed in the MAC address table. What command should you use?

Answer 20

mac-limit

Question 21

Enforcing a virtual security perimeter using a client’s geographic location is known by what term?

Answer 21

geofencing

Question 22

When using Kerberos, what is the purpose of a ticket?

Answer 22

It is a temporary set of credentials that a client uses to prove to other servers that its identity has been validated.

Question 23

Which legacy authentication protocol requires mutual authentication?

Answer 23

Microsoft Challenge Handshake Authentication Protocol, version 2 (MSCHAPv2)

Question 24

By far the most popular AAA service, what open-source service runs in the Application layer and can use UDP or TCP in the Transport layer?

Answer 24

RADIUS

Question 25

Which adaptation of EAP utilizes EAP-MSCHAPv2 inside of an encrypted TLS tunnel?

Answer 25

Protected EAP (PEAP)

Question 26

What IEEE standard includes an encryption key generation and management scheme known as TKIP?

Answer 26

802.11i

Question 27

What descendant of the Spanning Tree Protocol is defined by the IEEE 802.1W standard, and can detect as well as correct for link failures in milliseconds?

Answer 27

Rapid Spanning Tree Protocol (RSTP)

Question 28

You have been asked by your superior to configure all Cisco network switches to allow only acceptable MAC addresses through switch access ports. How is this accomplished?

Answer 28

Use the switchport port-security command to enable MAC filtering.

Question 29

What aspect of AAA is responsible for determining what a user can and cannot do with network resources?

Answer 29

authorization

Question 30

What statement regarding role-based access control is accurate?

Answer 30

RBAC allows a network administrator to base privileges and permissions around a detailed description of a user’s roles or jobs.

Question 31

Which encryption standard was originally utilized with WPA’s TKIP?

Answer 31

Rivest Cipher 4 (RC4)

Question 32

The Wired Equivalent Privacy standard had what significant disadvantage?

Answer 32

It used a shared encryption key for all clients, and the key might never change.

Question 33

In Open System Authentication, how does authentication occur?

Answer 33

The client “authenticates” using only the SSID name. In other words, no real authentication occurs.

Question 34

The Group Policy utility can be opened by typing what name into a Run box?

Answer 34

gpedit.msc

Question 35

When using Spanning Tree Protocol, which port on non-root bridges can forward traffic toward the root bridge?

Answer 35

Only one root port, which is the bridge’s port that is closest to the root bridge, can forward.

Question 36

Which of the following terms is used to describe the configuration of a port to copy all traffic passing through the switch to the device at the other end of the port?

Answer 36

port mirroring

Question 37

In regards to the use of local authentication, what statement is accurate?

Answer 37

Local authentication is network and server failure tolerant.

Question 38

What scenario might be ideal for the use of root guard in configuring a switch?

Answer 38

You wish to prevent switches beyond a certain port from becoming the root bridge, but still wish to use STP.

Question 39

When using a host-based intrusion detection system, what additional feature might be available to alert the system of any changes made to files that shouldn’t change?

Answer 39

file integrity monitoring (FIM)

Question 40

What statement correctly describes a stateless firewall?

Answer 40

A stateless firewall manages each incoming packet as a stand-alone entity, without regard to currently active connections.