NE NE Network Security 2

Question 1

Which VPN protocol uses UDP port 500 and ESP to create encrypted tunnels between sites?

Accepted Answer

IPsec IKEv2

Answer

PPTP

Answer

L2TP/IPsec

Answer

SSL/TLS VPN

Question 2

What is the purpose of Network Address Translation (NAT) in relation to security?

Accepted Answer

It hides internal IP addresses from external networks

Answer

It encrypts all internal traffic

Answer

It prevents all port-based attacks

Answer

It authenticates remote users

Question 3

Which type of ACL can filter traffic based on both source and destination IP addresses and port numbers?

Accepted Answer

Extended ACL

Answer

Standard ACL

Answer

Dynamic ACL

Answer

Reflexive ACL

Question 4

What is a Man-in-the-Middle (MitM) attack?

Accepted Answer

Intercepting and potentially altering communication between two parties

Answer

Flooding a network with broadcast traffic

Answer

Cracking passwords through dictionary attacks

Answer

Exploiting buffer overflow vulnerabilities

Question 5

Which protocol is used to centralize authentication, authorization, and accounting for network access?

Accepted Answer

RADIUS

Answer

SNMP

Answer

DHCP

Answer

LDAP

Question 6

What does the term 'zero-day vulnerability' mean?

Accepted Answer

A vulnerability that is publicly known but has no vendor patch yet

Answer

A vulnerability with a patch available for zero days

Answer

A vulnerability only exploitable for 24 hours

Answer

A vulnerability in newly deployed network hardware