ch 17 and 18

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

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? 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 technician is to document the current configurations of all network devices in a college, including those in off-site buildings. Which protocol would be best to use to securely access the network devices? FTP HTTP SSH Telnet

SSH

An employee complains that a Windows PC cannot connect to the Internet. A network technician issues the ipconfig command on the PC and is shown an IP address of 169.254.10.3. Which two conclusions can be drawn? (Choose two.) The PC cannot contact a DHCP server. The DNS server address is misconfigured. The default gateway address is not configured. The PC is configured to obtain an IP address automatically. The enterprise network is misconfigured for dynamic routing.

The PC cannot contact a DHCP server. The PC is configured to obtain an IP address automatically.

A user wants to know the IP address of the PC. What is the best command to use to accomplish the task? copy running-config startup-config show interfaces ipconfig show ip nat translations

ipconfig

A support technician needs to know the IP address of the wireless interface on a MAC. What is the best command to use to accomplish the task? copy running-config startup-config show interfaces ipconfig getifaddr en0 show ip nat translations

ipconfig getifaddr en0

An administrator is troubleshooting connectivity issues and needs to determine the IP address of a website. What is the best command to use to accomplish the task? show ipv6 route show ipv6 interface nslookup copy startup-config running-config

nslookup

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

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

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

Users are complaining that they are unable to browse certain websites on the Internet. An administrator can successfully ping a web server via its IP address, but cannot browse to the domain name of the website. Which troubleshooting tool would be most useful in determining where the problem is? netstat tracert nslookup ipconfig

nslookup

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Which command has to be configured on the router to complete the SSH configuration? service password-encryption transport input ssh enable secret class ip domain-name cisco.com

transport input ssh

By following a structured troubleshooting approach, a network administrator identified a network issue after a conversation with the user. What is the next step that the administrator should take? Verify full system functionality. Test the theory to determine cause. Establish a theory of probable causes. Establish a plan of action to resolve the issu

Establish a theory of probable causes.

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 designing a network to use multiple paths between switches to ensure there is no single point of failure 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

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

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 instant messaging FTP video SNMP

video

Which network service automatically assigns IP addresses to devices on the network? DHCP Telnet DNS traceroute

DHCP

What is considered the most effective way to mitigate a worm attack? Change system passwords every 30 days. Ensure that all systems have the most current virus definitions. Ensure that AAA is configured in the network. Download security updates from the operating system vendor and patch all vulnerable systems.

Download security updates from the operating system vendor and patch all vulnerable systems.

When configuring SSH on a router to implement secure network management, a network engineer has issued the login local and transport input ssh line vty commands. What three additional configuration actions have to be performed to complete the SSH configuration? (Choose three.) Set the user privilege levels. Generate the asymmetric RSA keys. Configure the correct IP domain name. Configure role-based CLI access. Create a valid local username and password database. Manually enable SSH after the RSA keys are generated.

Generate the asymmetric RSA keys. Configure the correct IP domain name. Create a valid local username and password database.

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.

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.

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.

Refer to the exhibit. Baseline documentation for a small company had ping round trip time statistics of 36/97/132 between hosts H1 and H3. Today the network administrator checked connectivity by pinging between hosts H1 and H3 that resulted in a round trip time of 1458/2390/6066. What does this indicate to the network administrator? Connectivity between H1 and H3 is fine. H3 is not connected properly to the network. Something is causing interference between H1 and R1. Performance between the networks is within expected parameters. Something is causing a time delay between the networks.

Something is causing a time delay between the networks.

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.

Which statement describes the ping and tracert commands? Tracert shows each hop, while ping shows a destination reply only. Tracert uses IP addresses; ping does not. Both ping and tracert can show results in a graphical display. Ping shows whether the transmission is successful; tracert does not.

Tracert shows each hop, while ping shows a destination reply only.

What is a characteristic of UDP? UDP datagrams take the same path and arrive in the correct order at the destination.​ Applications that use UDP are always considered unreliable.​ UDP reassembles the received datagrams in the order they were received. UDP only passes data to the network when the destination is ready to receive the data.

UDP reassembles the received datagrams in the order they were received.

Refer to the exhibit. Host H3 is having trouble communicating with host H1. The network administrator suspects a problem exists with the H3 workstation and wants to prove that there is no problem with the R2 configuration. What tool could the network administrator use on router R2 to prove that communication exists to host H1 from the interface on R2, which is the interface that H3 uses when communicating with remote networks? an extended ping telnet show cdp neighbors traceroute

an extended ping

On which two interfaces or ports can security be improved by configuring executive timeouts? (Choose two.) Fast Ethernet interfaces console ports serial interfaces vty ports loopback interfaces

console ports vty ports

A student wants to save a router configuration to NVRAM. What is the best command to use to accomplish the task? show interfaces show ip nat translations show ip route copy running-config startup-config

copy running-config startup-config

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 teacher is having difficulties connecting his PC to the classroom network. He needs to verify that a default gateway is configured correctly. What is the best command to use to accomplish the task? copy running-config startup-config show interfaces show ip nat translations ipconfig

ipconfig

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 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

Which type of attack involves an adversary attempting to gather information about a network to identify vulnerabilities? DoS reconnaissance dictionary man-in-the-middle

reconnaissance

Students who are connected to the same switch are having slower than normal response times. The administrator suspects a duplex setting issue. What is the best command to use to accomplish the task? ipconfig getifaddr en0 show interfaces copy running-config startup-config show ip nat translations

show interfaces

A network technician is troubleshooting an issue and needs to verify the IP addresses of all interfaces on a router. What is the best command to use to accomplish the task? nslookup show ip interface brief ipconfig getifaddr en0 show ip route

show ip interface brief

Which command can an administrator execute to determine what interface a router will use to reach remote networks? show arp show interfaces show ip route show protocols

show ip route

A network technician is troubleshooting an issue and needs to verify all of the IPv6 interface addresses on a router. What is the best command to use to accomplish the task? show ipv6 interface show interfaces show ip nat translations show ip route

show ipv6 interface

Only employees connected to IPv6 interfaces are having difficulty connecting to remote networks. The analyst wants to verify that IPv6 routing has been enabled. What is the best command to use to accomplish the task? show interfaces show running-config copy running-config startup-config show ip nat translations

show running-config

Only employees connected to IPv6 interfaces are having difficulty connecting to remote networks. The analyst wants to verify that IPv6 routing has been enabled. What is the best command to use to accomplish the task? show ipv6 route show ipv6 interface show running-config copy startup-config running-config

show running-config

Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts? URL filtering application filtering packet filterin stateful packet inspection

stateful packet inspection

Which command can an administrator issue on a Cisco router to send debug messages to the vty lines? terminal monitor logging console logging buffered logging synchronou

terminal monitor

Which command should be used on a Cisco router or switch to allow log messages to be displayed on remotely connected sessions using Telnet or SSH? debug all logging synchronous show running-config​ terminal monitor

terminal monitor

What information about a Cisco router can be verified using the show version command? the routing protocol version that is enabled the value of the configuration register the operational status of serial interfaces the administrative distance used to reach networks

the value of the configuration register

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