Cisco CCNA Practice Test

Question 1

Which of the following statements concerning TCP and UDP are correct?

Accepted Answer

TCP is a secure protocol UDP is not secure.

Answer

Explanation:
The main difference between these protocols is that TCP is a connection-oriented protocol, while UDP is a connectionless one. Each of the protocols has its strengths and weaknesses. One is much faster, while the other is safer.

Question 2

Which of the wireless protocols is the most reliable?

Accepted Answer

WPA3

Answer

WPA3 is the latest and most secure wireless security protocol, offering significant improvements over its predecessors like WPA2, WPA, and WEP. It provides enhanced encryption, stronger authentication, and protection against brute-force attacks. These advancements make WPA3 the most reliable choice for securing modern wireless networks.

Question 3

What are the two main types of site-to-site VPNs?

Accepted Answer

Extranet Based VPN

Answer

Site-to-site VPNs connect entire networks, rather than individual hosts, over a public network. Intranet-based VPNs connect different sites belonging to the *same* organization, allowing secure access to internal resources. Extranet-based VPNs connect different sites of *different* organizations, such as business partners or suppliers, enabling secure collaboration between them.

Question 4

Which of the protocols listed below is a routed protocol?

Accepted Answer

IP

Answer

A routed protocol is responsible for carrying user data across an internetwork, providing addressing and encapsulation for data packets. IP (Internet Protocol) is the primary routed protocol, enabling end-to-end communication across diverse networks. Routing protocols like OSPF and RIP, on the other hand, are used by routers to *exchange* routing information about how to reach networks using routed protocols.

Question 5

DSCP bits are____ bits.

Accepted Answer

6

Answer

DSCP (Differentiated Services Code Point) is a field within the IP header used for Quality of Service (QoS) mechanisms. It consists of 6 bits, which allows for 64 different possible classifications (2^6 = 64) of network traffic. These classifications enable routers to prioritize different types of data, ensuring critical applications receive preferential treatment.