Question 1. An activist can best be described as which of the following?

• An unskilled programmer that spreads malicious scripts
• Consider themselves seekers of knowledge
• Use DoS attacks on websites with which they disagree
• Deface websites by leaving messages for their friends to read

Question 2. Which type of firewall policy calls for a firewall to deny all traffic by default?

• Permissive policy
• Perimeter policy
• Restrictive policy
• Demilitarized policy

Question 3. What is a program that appears to do something useful but is actually malware?

• Virus
• Logic bomb
• Trojan
• Back door

Question 4. In which form of authentication does the authenticating device generate a random code and send it to the user who wants to be authenticated?

• Basic
• Challenge/response
• Biometrics
• Signature

Question 5. Which type of attack works by an attacker operating between two computers in a network and impersonating one computer to intercept communications?

• Malicious port scanning
• Man-in-the-middle
• Denial of service
• Remote procedure call

Question 6. How large is the IPv6 address space?

• 32 bits
• 128 bits
• 64 bits
• 168 bits

Question 7. Which field in the IP header is an 8-bit value that identifies the maximum amount of time the packet can remain in the network before it is dropped?

• TTL
• Fragment Offset
• ECN
• Options

Question 8.8.Which protocol is responsible for automatic assignment of IP addresses?

• DNS
• DHCP
• FTP
• SNMP

Question 9. Which of the following is not an advantage of IPv6 versus IPv4?

• Larger address space
• Built-in security
• Supports static configuration
• NAT is unnecessary

Question 10. Which of the following is a valid IPv6 address?

• 5BA4:2391:0:0:4C3E
• 1080::8:800:200C:417A
• 24::5B1A::346C
• 5510:ABCD::34:1::2

Question 11. Which TCP flag can be the default response to a probe on a closed port?

• RST
• URG
• PSH
• SYN

Question 12. Which of the following is the description of a land attack?

• The local host source address occurs in the packet.
• Source and destination IP address/port are the same.
• An illegal TCP flag is found in the segment header.
• The attacker uses an undefined protocol number.

Question 13. What is the typical packet sequence for closing a TCP session?

• FIN, FIN ACK, RST
• FIN, ACK, FIN ACK, ACK
• FIN ACK, FIN, ACK, RST
• FIN, FIN ACK

Question 14. Which of the following is an element of the TCP header that can indicate that a connection has been established?

• Flags
• Stream index
• SEQ/ACK analysis
• Sequence number

Question 15. Of what category of attack is a DoS attack an example?

• Bad header information
• Single-packet attack
• Multiple-packet attack
• Suspicious data payload

Question 16. What uses mathematical calculations to compare routes based on some measurement of distance?

• Route summarization
• Link-state routing protocols
• Routing metrics
• Distance-vector routing protocols

Question 17. Which protocol that runs on Cisco routers shares information between Cisco devices?

• CDP
• TCP
• bootp
• SSH

Question 18. Which of the following is true about ACLs on Cisco routers?

• There is an implicit deny any statement at the end of the ACL.
• There is an explicit permit any statement at the beginning of the ACL.
• ACLs are processed in reverse order so place high priority statements last.
• ACLs bound to an interface apply to inbound and outbound traffic by default.

Question 19.19.Which of the following types of traffic does NOT travel through routers?

• DNS zone transfers
• ARP requests
• SNMP status information
• Network route information

Question 20. Which of the following types of passwords prevents a user from accessing privileged exec mode on a Cisco router?

• Console
• AUX
• Enable
• TTY