Network Security

What is a characteristic of a role-based CLI view of router configuration?

A single CLI view can be shared within multiple superviews.

When describing malware, what is a difference between a virus and a worm?

A virus replicates itself by attaching to another file, whereas a worm can replicate itself independently.

A company implements a security policy that ensures that a file sent from the headquarters office to the branch office can only be opened with a predetermined code. This code is changed every day. Which two algorithms can be used to achieve this task? (Choose two.)

AES 3DES

What is a limitation to using OOB management on a large enterprise network?

All devices appear to be attached to a single management network.

login block-for 150 attempts 4 within 90

All login attempts will be blocked for 150 seconds if there are 4 failed attempts within 90 seconds.

A network analyst is configuring a site-to-site IPsec VPN. The analyst has configured both the ISAKMP and IPsec policies. What is the next step?

Apply the crypto map to the appropriate outbound interfaces.

What characteristic of the Snort term-based subscriptions is true for both the community and the subscriber rule sets?

Both offer threat protection against security threats

In the implementation of security on multiple devices, how do ASA ACLs differ from Cisco IOS ACLs?

Cisco IOS ACLs are configured with a wildcard mask and Cisco ASA ACLs are configured with a subnet mask

What are two drawbacks in assigning user privilege levels on a Cisco router? (Choose two.)

Commands from a lower level are always executable at a higher level. Assigning a command with multiple keywords allows access to all commands using those keywords.

A security analyst is configuring Snort IPS. The analyst has just downloaded and installed the Snort OVA file. What is the next step?

Configure Virtual Port Group interfaces.

If AAA is already enabled, which three CLI steps are required to configure a router with a specific view? (Choose three.)

Create a view using the parser view view-name command. Assign commands to the view. Assign a secret password to the view

A recently created ACL is not working as expected. The admin determined that the ACL had been applied inbound on the interface and that was the incorrect direction. How should the admin fix this issue?

Delete the original ACL and create a new ACL, applying it outbound on the interface.

What is the best way to prevent a VLAN hopping attack?

Disable trunk negotiation for trunk ports and statically set nontrunk ports as access ports.

Which three types of traffic are allowed when the authentication port-control auto command has been issued and the client has not yet been authenticated? (Choose three.)

EAPOL CDP STP

Port security has been configured on the Fa 0/12 interface of switch S1. What action will occur when PC1 is attached to switch S1 with the applied configuration?

Frames from PC1 will cause the interface to shut down immediately, and a log entry will be made.

What are two drawbacks to using HIPS? (Choose two.)

HIPS has difficulty constructing an accurate network picture or coordinating events that occur across the entire network. With HIPS, the network administrator must verify support for all the different operating systems used in the network

What is typically used to create a security trap in the data center facility?

IDs, biometrics, and two access doors

Which statement describes a characteristic of the IKE protocol?

It uses UDP port 500 to exchange IKE information between the security gateways.

Which two options are security best practices that help mitigate BYOD risks? (Choose two.)

Keep the device OS and software updated. Only turn on Wi-Fi when using the wireless network.

What network testing tool is used for password auditing and recovery?

L0phtcrack

A researcher is comparing the differences between a stateless firewall and a proxy firewall. Which two additional layers of the OSI model are inspected by a proxy firewall? (Choose two.)

Layer 3 Layer 4

How does a Caesar cipher work on a message?

Letters of the message are replaced by another letter that is a set number of places away in the alphabet.

Refer to the exhibit. The ip verify source command is applied on untrusted interfaces. Which type of attack is mitigated by using this configuration?​

MAC and IP address spoofing

Which algorithm can ensure data integrity?

MD5

What are two hashing algorithms used with IPsec AH to guarantee authenticity? (Choose two.)

MD5 SHA

What network testing tool can be used to identify network layer protocols running on a host?

Nmap

What are two methods to maintain certificate revocation status? (Choose two.)

OCSP CRL

What technology has a function of using trusted third-party protocols to issue credentials that are accepted as an authoritative identity?

PKI certificates

A network administrator is configuring a VPN between routers R1 and R2. Which commands would correctly configure a pre-shared key for the two routers?

R1(config)# crypto isakmp key 5tayout! address 64.100.0.2 R2(config)# crypto isakmp key 5tayout! address 64.100.0.1

Which network monitoring technology uses VLANs to monitor traffic on remote switches?

RSPAN

Which measure can a security analyst take to perform effective security monitoring against network traffic encrypted by SSL technology?

Require remote access connections through IPsec VPN.

An administrator discovers that a user is accessing a newly established website that may be detrimental to company security. What action should the administrator take first in terms of the security policy?

Revise the AUP immediately and get all users to sign the updated AUP.

An administrator is trying to develop a BYOD security policy for employees that are bringing a wide range of devices to connect to the company network. Which three objectives must the BYOD security policy address? (Choose three.)

Rights and activities permitted on the corporate network must be defined. The level of access of employees when connecting to the corporate network must be defined Safeguards must be put in place for any personal device being compromised.

What network security testing tool has the ability to provide details on the source of suspicious network activity

SIEM

A technician is to document the current configurations of all network devices in a college, including those in off-site buildings. Which protocol would be best to use to securely access the network devices?

SSH

Pattern-based detection

Searches for specific patern. Compares network traffic to databasee of known attacks.

Which two protocols generate connection information within a state table and are supported for stateful filtering? (Choose two.)

TCP HTTP

What are two disadvantages of using an IDS? (Choose two.)

The IDS does not stop malicious traffic. The IDS requires other devices to respond to attacks.

A network administrator configures AAA authentication on R1. Which statement describes the effect of the keyword single-connection in the configuration?

The authentication performance is enhanced by keeping the connection to the TACACS+ server open

According to the command output, which three statements are true about the DHCP options entered on the ASA? (Choose three.)

The dhcpd address [ start-of-pool ]-[ end-of-pool ] inside command was issued to enable the DHCP server. The dhcpd enable inside command was issued to enable the DHCP server. The dhcpd auto-config outside command was issued to enable the DHCP client.

How does a firewall handle traffic when it is originating from the private network and traveling to the DMZ network?

The traffic is selectively permitted and inspected.

Which two statements describe the characteristics of symmetric algorithms? (Choose two.)

They are referred to as a pre-shared key or secret key. They are commonly used with VPN traffic.

Syslog message: Line protocol on Interface Serial0/0, changed state to up

This message indicates that service timestamps have been configured. This message is a level 5 notification message

What are three characteristics of ASA transparent mode? (Choose three.)

This mode is referred to as a "bump in the wire." This mode does not support VPNs, QoS, or DHCP Relay. In this mode the ASA is invisible to an attacker.

Which statement describes a difference between the Cisco ASA IOS CLI feature and the router IOS CLI feature?

To use a show command in a general configuration mode, ASA can use the command directly whereas a router will need to enter the do command before issuing the show command.

What is a characteristic of a DMZ zone?

Traffic originating from the outside network going to the DMZ network is selectively permitted.

How does a firewall handle traffic when it is originating from the public network and traveling to the DMZ network?

Traffic that is originating from the public network is inspected and selectively permitted when traveling to the DMZ network.

What network testing tool would an administrator use to assess and validate system configurations against security policies and compliance standards?

Tripwire

How do modern cryptographers defend against brute-force attacks?

Use a keyspace large enough that it takes too much money and too much time to conduct a successful attack.

A user complains about being locked out of a device after too many unsuccessful AAA login attempts. What could be used by the network administrator to provide a secure authentication access method without locking a user out of a device?

Use the login delay command for authentication attempts.

Which protocol is an IETF standard that defines the PKI digital certificate format?

X.509

What are two benefits of using a ZPF rather than a Classic Firewall? (Choose two.)

ZPF policies are easy to read and troubleshoot. The ZPF is not dependent on ACLs.

Which method is used to identify interesting traffic needed to create an IKE phase 1 tunnel?

a permit access list entry

When the CLI is used to configure an ISR for a site-to-site VPN connection, which two items must be specified to enable a crypto map policy? (Choose two.)

a valid access list the peer

What two features are added in SNMPv3 to address the weaknesses of previous versions of SNMP? (Choose two.)

authentication, encryption

Which three services are provided through digital signatures? (Choose three.)

authenticity integrity nonrepudiation

A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework?

authorization

In an AAA-enabled network, a user issues the configure terminal command from the privileged executive mode of operation. What AAA function is at work if this command is rejected?

authorization

What are the three signature levels provided by Snort IPS on the 4000 Series ISR? (Choose three.)

balanced security connectivity

nat (inside, outside) dynamic. What type of NAT is used?

bidirectional NAT

What are two examples of DoS attacks? (Choose two.)

buffer overflow, ping of death

A web server administrator is configuring access settings to require users to authenticate first before accessing certain web pages. Which requirement of information security is addressed through the configuration?

confidentiality

The use of 3DES within the IPsec framework is an example of which of the five IPsec building blocks?

confidentiality

What are two security measures used to protect endpoints in the borderless network? (Choose two.)

denylisting DLP

Which two tasks are associated with router hardening? (Choose two.)

disabling unused ports and interfaces securing administrative access

What command is used on a switch to set the port access entity type so the interface acts only as an authenticator and will not respond to any messages meant for a supplicant?

dot1x pae authenticator

Which rule action will cause Snort IPS to block and log a packet?

drop

The security policy in a company specifies that employee workstations can initiate HTTP and HTTPS connections to outside websites and the return traffic is allowed. However, connections initiated from outside hosts are not allowed. Which parameter can be used in extended ACLs to meet this requirement?

eq

What is the function of the pass action on a Cisco IOS Zone-Based Policy Firewall?

forwarding traffic from one zone to another

Which three functions are provided by the syslog logging service? (Choose three.)

gathering logging information distinguishing between information to be captured and information to be ignored specifying where captured information is stored

What type of network security test can detect and report changes made to network systems?

integrity checking

Which two options can limit the information discovered from port scanning? (Choose two.)

intrusion prevention system firewall

anomaly- based detection

involves first defining a profile of what is considered normal network or host activity.

A network administrator is configuring DAI on a switch. Which command should be used on the uplink interface that connects to a router?

ip arp inspection trust

Upon completion of a network security course, a student decides to pursue a career in cryptanalysis. What job would the student be doing as a cryptanalyst?

making and breaking secret codes

Which action do IPsec peers take during the IKE Phase 2 exchange?

negotiation of IPsec policy

What is the next step in the establishment of an IPsec VPN after IKE Phase 1 is complete?

negotiation of the IPsec SA policy

What two ICMPv6 message types must be permitted through IPv6 access control lists to allow resolution of Layer 3 addresses to Layer 2 MAC addresses? (Choose two.)

neighbor solicitations neighbor advertisements

What ports can receive forwarded traffic from an isolated port that is part of a PVLAN?

only promiscuous ports

Which two features are included by both TACACS+ and RADIUS protocols? (Choose two.)

password encryption, utilization of transport layer protocols

What security countermeasure is effective for preventing CAM table overflow attacks?

port security

Which type of firewall makes use of a server to connect to destination devices on behalf of clients?

proxy firewall

. What will be displayed in the output of the show running-config object command after the exhibited configuration commands are entered on an ASA 5506-X?

range 192.168.1.10 192.168.1.20

Policy-based detection

requires an admin to manually define behaviors that area suspicious

Which type of packet is unable to be filtered by an outbound ACL?

router-generated packet

What is the main factor that ensures the security of encryption of modern algorithms?

secrecy of the keys

Which zone-based policy firewall zone is system-defined and applies to traffic destined for the router or originating from the router?

self zone

A company is concerned with leaked and stolen corporate data on hard copies. Which data loss mitigation technique could help with this situation?

shredding

What would be the primary reason an attacker would launch a MAC address overflow attack?

so that the attacker can see frames that are destined for other hosts

Which threat protection capability is provided by Cisco ESA?

spam protection

ACLs are used primarily to filter traffic. What are two additional uses of ACLs?

specifying internal hosts for NAT, identifying traffic for QoS

A network technician has been asked to design a virtual private network between two branch routers. Which type of cryptographic key should be used in this scenario?

symmetric key

A client connects to a Web server. Which component of this HTTP connection is not examined by a stateful firewall?

the actual contents of the HTTP connection

What are the three core components of the Cisco Secure Data Center solution? (Choose three.)

threat defense visibility secure segmentation

What are two reasons to enable OSPF routing protocol authentication on a network? (Choose two.)​

to prevent data traffic from being redirected and then discarded to prevent redirection of data traffic to an insecure link

What function is provided by Snort as part of the Security Onion?

to view pcap transcripts generated by intrusion detection tools

What are three attributes of IPS signatures? (Choose three.)

type action trigger

What are three characteristics of the RADIUS protocol? (Choose three.)

uses UDP ports for authentication and accounting is an open RFC standard AAA protocol supports 802.1X and SIP

Which two types of hackers are typically classified as grey hat hackers? (Choose two.)

vulnerability brokers hacktivists

Which attack is defined as an attempt to exploit software vulnerabilities that are unknown or undisclosed by the vendor?

zero-day