exam CCNA Security chapter 1

1. Below you will find the assessment items as presented on the exam as well as the scoring rules associated with the item.
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1 What is a ping sweep?
A ping sweep is a network scanning technique that indicates the live hosts in a range of IP addresses.
A ping sweep is a software application that enables the capture of all network packets sent across a LAN.
A ping sweep is a scanning technique that examines a range of TCP or UDP port numbers on a host to detect listening services.
A ping sweep is a query and response protocol that identifies information about a domain, including the addresses assigned to that domain.
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.1 Reconnaissance Attacks
2 Which access attack method involves a software program attempting to discover a system password by using an electronic dictionary?
buffer overflow attack
port redirection attack
Denial of Service attack
brute-force attack
IP spoofing attack
packet sniffer attack
Observable Description Max Value
1
correctness of
response
2 points for Option 4
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.2 Access Attacks
3 How is a Smurf attack conducted?
by sending a large number of packets, overflowing the allocated buffer memory of the target device
by sending an echo request in an IP packet larger than the maximum packet size of 65,535 bytes
by sending a large number of ICMP requests to directed broadcast addresses from a spoofed source address on the same network
by sending a large number of TCP SYN packets to a target device from a spoofed source address
Observable Description Max Value
1
correctness of
response
2 points for Option 3
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.3 Denial of Service Attacks
4 A port scan is classified as what type of attack?
access attack

2. Denial of Service attack
reconnaissance attack
spoofing attack
Observable Description Max Value
1
correctness of
response
2 points for Option 3
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.1 Reconnaissance Attacks
5 What are the basic phases of attack that can be used by a virus or worm in sequential order?
paralyze, probe, penetrate, persist, and propagate
probe, penetrate, persist, propagate, and paralyze
penetrate, persist, propagate, paralyze, and probe
persist, propagate, paralyze, probe, and penetrate
Observable Description Max Value
1
correctness of
response
2 points for Option 2
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.2 Worms
6 What are the three major components of a worm attack? (Choose three.)
enabling vulnerability
infecting vulnerability
payload
penetration mechanism
probing mechanism
propagation mechanism
Observable Description Max Value
1
correctness of
response
Option 1, Option 3, and Option 6 are correct.
1 point for each correct option.
0 points if more options are selected than required.
3
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.2 Worms
7 Which type of software typically uses a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN?
port scanner
ping sweeper
packet sniffer
Internet information query

3. Observable Description Max Value
1
correctness of
response
2 points for Option 3
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.1 Reconnaissance Attacks
8 An attacker is using a laptop as a rogue access point to capture all network traffic from a targeted user. Which type of attack is this?
trust exploitation
buffer overflow
man in the middle
port redirection
Observable Description Max Value
1
correctness of
response
2 points for Option 3
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.2 Access Attacks
9 Which three options describe the phases of worm mitigation? (Choose three.)
The containment phase requires the use of incoming and outgoing ACLs on routers and firewalls.
The containment phase tracks down and identifies the infected machines within the contained areas.
The inoculation phase disconnects, blocks, or removes infected machines.
The inoculation phase patches uninfected systems with the appropriate vendor patch for the vulnerability.
The quarantine phase terminates the worm process, removes modified files or system settings, and patches the vulnerability the worm used to exploit the system.
The treatment phase disinfects actively infected systems.
Observable Description Max Value
1
correctness of
response
Option 1, Option 4, and Option 6 are correct.
1 point for each correct option.
0 points if more options are selected than required.
3
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.4 Mitigating Viruses, Worms, and Trojan Horses
10 Which phase of worm mitigation requires compartmentalization and segmentation of the network to slow down or stop the worm and prevent currently infected hosts from targeting and infecting o
systems?
containment phase
inoculation phase
quarantine phase
treatment phase
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2

4. This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.4 Mitigating Viruses, Worms, and Trojan Horses
11 What is a characteristic of a Trojan Horse?
A Trojan Horse can be carried in a virus or worm.
A proxy Trojan Horse opens port 21 on the target system.
An FTP Trojan Horse stops anti-virus programs or firewalls from functioning.
A Trojan Horse can be hard to detect because it closes when the application that launched it closes.
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.3 Trojan Horses
12 Which two statements are characteristics of a virus? (Choose two.)
A virus typically requires end-user activation.
A virus has an enabling vulnerability, a propagation mechanism, and a payload.
A virus replicates itself by independently exploiting vulnerabilities in networks.
A virus provides the attacker with sensitive data, such as passwords.
A virus can be dormant and then activate at a specific time or date.
Observable Description Max Value
1
correctness of
response
Option 1 and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required.
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.4 Mitigating Viruses, Worms, and Trojan Horses
13 Which two are characteristics of DoS attacks? (Choose two.)
They always precede access attacks.
They attempt to compromise the availability of a network, host, or application.
They are difficult to conduct and are initiated only by very skilled attackers.
They are commonly launched with a tool called L0phtCrack.
Examples include smurf attacks and ping of death attacks.
Observable Description Max Value
1
correctness of
response
Option 2 and Option 5 are correct.
1 point for each correct option.
0 points if more options are selected than required.
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.3 Denial of Service Attacks

5. 14 Which two statements describe access attacks? (Choose two.)
Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN.
Password attacks can be implemented using brute-force attack methods, Trojan Horses, or packet sniffers.
Buffer overflow attacks write data beyond the allocated buffer memory to overwrite valid data or exploit systems to execute malicious code.
Port scanning attacks scan a range of TCP or UDP port numbers on a host to detect listening services.
Trust exploitation attacks can use a laptop acting as a rogue access point to capture and copy all network traffic in a public location on a wireless hotspot.
Observable Description Max Value
1
correctness of
response
Option 2 and Option 3 are correct.
1 point for each correct option.
0 points if more options are selected than required.
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.2 Access Attacks
15 A disgruntled employee is using Wireshark to discover administrative Telnet usernames and passwords. What type of network attack does this describe?
Denial of Service
port redirection
reconnaissance
trust exploitation
Observable Description Max Value
1
correctness of
response
2 points for Option 3
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.1 Reconnaissance Attacks
16 Which two network security solutions can be used to mitigate DoS attacks? (Choose two.)
virus scanning
data encryption
anti-spoofing technologies
intrusion protection systems
applying user authentication
Observable Description Max Value
1
correctness of
response
Option 3 and Option 4 are correct.
1 point for each correct option.
0 points if more options are selected than required.
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.3.4 Mitigating Network Attacks
17 Users report to the helpdesk that icons usually seen on the menu bar are randomly appearing on their computer screens. What could be a reason that computers are displaying these random gr
An access attack has occurred.
A virus has infected the computers.
A DoS attack has been launched against the network.

6. The computers are subject to a reconnaissance attack.
Observable Description Max Value
1
correctness of
response
2 points for Option 2
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.1 Viruses
18 A network administrator detects unknown sessions involving port 21 on the network. What could be causing this security breach?
An FTP Trojan Horse is executing.
A reconnaissance attack is occurring.
A denial of service attack is occurring.
Cisco Security Agent is testing the network.
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.3 Trojan Horses
19 Which statement accurately characterizes the evolution of network security?
Internal threats can cause even greater damage than external threats.
Internet architects planned for network security from the beginning.
Early Internet users often engaged in activities that would harm other users.
Threats have become less sophisticated while the technical knowledge needed by an attacker has grown.
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.1.1 Evolution of Network Security
20 What is considered a valid method of securing the control plane in the Cisco NFP framework?
authorization of actions
DHCP snooping
dynamic ARP inspection
login and password policy
routing protocol authentication
role-based access control
Observable Description Max Value
1
correctness of
response
2 points for Option 5
0 points for any other option
2

7. This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.4.1 NFP
21 What are two reasons for securing the data plane in the Cisco NFP framework? (Choose two.)
to protect against DoS attacks
to provide bandwidth control
to force technicians to use SSH and HTTPS when managing devices
to provide a record of who accessed the device, what occurred, and when it occurred
to allow users to control the flow of traffic that is managed by the route processor of their network devices
Observable Description Max Value
1
correctness of
response
Option 1 and Option 2 are correct.
1 point for each correct option.
0 points if more options are selected than required.
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.4.1 NFP
22 Which type of security threat can be described as software that attaches to another program to execute a specific unwanted function?
virus
worm
proxy Trojan Horse
Denial of Service Trojan Horse
Observable Description Max Value
1
correctness of
response
2 points for Option 1
0 points for any other option
2
This item references content from the following areas:
CCNA Security: Implementing Network Security
 1.2.1 Viruses
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