CTE Network Security & Protocols 2

Question 1

Which protocol provides secure shell access for remote network device management and encrypts all session traffic?

Accepted Answer

SSH (Secure Shell)

Answer

SSH encrypts all data in transit, replacing the insecure Telnet protocol for remote device management.

Question 2

A telecom operator needs to authenticate users before granting network access. Which 802.1X component issues or denies access credentials?

Accepted Answer

Authentication Server

Answer

In 802.1X, the Authentication Server (typically RADIUS) validates credentials and grants or denies access.

Question 3

What type of attack floods a network with spoofed ICMP echo requests, overwhelming the victim with amplified response traffic?

Accepted Answer

Smurf attack

Answer

A Smurf attack sends spoofed ICMP requests to a broadcast address, causing all hosts to reply to the victim.

Question 4

In IPsec, which mode encapsulates the entire original IP packet inside a new IP header, commonly used for VPN tunnels?

Accepted Answer

Tunnel mode

Answer

Tunnel mode encapsulates the entire original packet, making it suitable for site-to-site VPN connections.

Question 5

Which cryptographic concept ensures that a sender cannot later deny having sent a message?

Accepted Answer

Non-repudiation

Answer

Non-repudiation, typically provided through digital signatures, prevents a sender from denying a transmitted message.

(CTE) Certified Telecommunications Executive Practice Test