CCNA 1 v7 Modules 16 – 17: Building and Securing a Small Network Exam Answers Flashcards
Which component is designed to protect against unauthorized communications to and from a computer?
security center
port scanner
antimalware
antivirus
firewall
firewall
Which command will block login attempts on RouterA for a period of 30 seconds if there are 2 failed login attempts within 10 seconds?
RouterA(config)# login block-for 10 attempts 2 within 30
RouterA(config)# login block-for 30 attempts 2 within 10
RouterA(config)# login block-for 2 attempts 30 within 10
RouterA(config)# login block-for 30 attempts 10 within 2
RouterA(config)# login block-for 30 attempts 2 within 10
What is the purpose of the network security accounting function?
to require users to prove who they are
to determine which resources a user can access
to keep track of the actions of a user
to provide challenge and response questions
to keep track of the actions of a user
Which example of malicious code would be classified as a Trojan horse?
malware that was written to look like a video game
malware that requires manual user intervention to spread between systems
malware that attaches itself to a legitimate program and spreads to other programs when launched
malware that can automatically spread from one system to another by exploiting a vulnerability in the target
malware that was written to look like a video game
What is the difference between a virus and a worm?
Viruses self-replicate but worms do not.
Worms self-replicate but viruses do not.
Worms require a host file but viruses do not.
Viruses hide in legitimate programs but worms do not.
Worms self-replicate but viruses do not.
Which attack involves a compromise of data that occurs between two end points?
denial-of-service
man-in-the-middle attack
extraction of security parameters
username enumeration
man-in-the-middle attack
Which type of attack involves an adversary attempting to gather information about a network to identify vulnerabilities?
reconnaissance
DoS
dictionary
man-in-the-middle
reconnaissance
What is the purpose of the network security authentication function?
to require users to prove who they are
to determine which resources a user can access
to keep track of the actions of a user
to provide challenge and response questions
to require users to prove who they are
Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?
stateful packet inspection
URL filtering
application filtering
packet filtering
stateful packet inspection
When applied to a router, which command would help mitigate brute-force password attacks against the router?
exec-timeout 30
service password-encryption
banner motd $Max failed logins = 5$
login block-for 60 attempts 5 within 60
login block-for 60 attempts 5 within 60
What feature of SSH makes it more secure than Telnet for a device management connection?
confidentiality with IPsec
stronger password requirement
random one-time port connection
login information and data encryption
login information and data encryption
What is the advantage of using SSH over Telnet?
SSH is easier to use.
SSH operates faster than Telnet.
SSH provides secure communications to access hosts.
SSH supports authentication for a connection request.
SSH provides secure communications to access hosts.
What is the role of an IPS?
detecting and blocking of attacks in real time
connecting global threat information to Cisco network security devices
authenticating and validating traffic
filtering of nefarious websites
detecting and blocking of attacks in real time
A user is redesigning a network for a small company and wants to ensure security at a reasonable price. The user deploys a new application-aware firewall with intrusion detection capabilities on the ISP connection. The user installs a second firewall to separate the company network from the public network. Additionally, the user installs an IPS on the internal network of the company. What approach is the user implementing?
attack based
risk based
structured
layered
layered
What is an accurate description of redundancy?
configuring a router with a complete MAC address database to ensure that all frames can be forwarded to the correct destination
configuring a switch with proper security to ensure that all traffic forwarded through an interface is filtered
designing a network to use multiple virtual devices to ensure that all traffic uses the best path through the internetwork
designing a network to use multiple paths between switches to ensure there is no single point of failure
designing a network to use multiple paths between switches to ensure there is no single point of failure
A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)
voice
video
instant messaging
FTP
SNMP
voice
video
What is the purpose of a small company using a protocol analyzer utility to capture network traffic on the network segments where the company is considering a network upgrade?
to identify the source and destination of local network traffic
to capture the Internet connection bandwidth requirement
to document and analyze network traffic requirements on each network segment
to establish a baseline for security analysis after the network is upgraded
to document and analyze network traffic requirements on each network segment
Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?
Switch# ping 10.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
UUUUU
Success rate is 0 percent (0/5)
Connectivity to the remote device was successful.
A router along the path did not have a route to the destination.
A ping packet is being blocked by a security device along the path.
The connection timed out while waiting for a reply from the remote device.
A router along the path did not have a route to the destination.
Which method is used to send a ping message specifying the source address for the ping?
Issue the ping command from within interface configuration mode.
Issue the ping command without specifying a destination IP address.
Issue the ping command without extended commands.
Issue the ping command after shutting down un-needed interfaces.
Issue the ping command without specifying a destination IP address.
A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue?
a change in the bandwidth according to the show interfaces output
a next-hop timeout from a traceroute
an increase in host-to-host ping response times
a change in the amount of RAM according to the show version output
an increase in host-to-host ping response times
Which statement is true about Cisco IOS ping indicators?
‘!’ indicates that the ping was unsuccessful and that the device may have issues finding a DNS server.
‘U’ may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful.
‘.’ indicates that the ping was successful but the response time was longer than normal.
A combination of ‘.’ and ‘!’ indicates that a router along the path did not have a route to the destination address and responded with an ICMP unreachable message.
‘U’ may indicate that a router along the path did not contain a route to the destination address and that the ping was unsuccessful.
A user reports a lack of network connectivity. The technician takes control of the user machine and attempts to ping other computers on the network and these pings fail. The technician pings the default gateway and that also fails. What can be determined for sure by the results of these tests?
The NIC in the PC is bad.
The TCP/IP protocol is not enabled.
The router that is attached to the same network as the workstation is down.
Nothing can be determined for sure at this point.
Nothing can be determined for sure at this point.
A network technician issues the C:> tracert -6 www.cisco.com command on a Windows PC. What is the purpose of the -6 command option?
It forces the trace to use IPv6.
It limits the trace to only 6 hops.
It sets a 6 milliseconds timeout for each replay.
It sends 6 probes within each TTL time period.
It forces the trace to use IPv6.
Why would a network administrator use the tracert utility?
to determine the active TCP connections on a PC
to check information about a DNS name in the DNS server
to identify where a packet was lost or delayed on a network
to display the IP address, default gateway, and DNS server address for a PC
to identify where a packet was lost or delayed on a network
A ping fails when performed from router R1 to directly connected router R2. The network administrator then proceeds to issue the show cdp neighbors command. Why would the network administrator issue this command if the ping failed between the two routers?
The network administrator suspects a virus because the ping command did not work.
The network administrator wants to verify Layer 2 connectivity.
The network administrator wants to verify the IP address configured on router R2.
The network administrator wants to determine if connectivity can be established from a non-directly connected network.
The network administrator wants to verify Layer 2 connectivity.
A network engineer is troubleshooting connectivity issues among interconnected Cisco routers and switches. Which command should the engineer use to find the IP address information, host name, and IOS version of neighboring network devices?
show version
show ip route
show interfaces
show cdp neighbors detail
show cdp neighbors detail
