A critical vulnerability is discovered on a network device. The vendor states it has already patched this vulnerability in its current release. Which of the following actions should an administrator take?
A. Change the default password
B. Use a firewall in front of the device.
C. Update the firmware.
D. Upgrade the configuration.
A disgruntled employee decides to leak critical information about a company's new product. The employee places keyloggers on the department's computers, allowing the information to be sent out to the Internet. Which of the following attacks is occurring?
A. Man-in-the-middle
B. Logic bomb
C. Insider threat
D. Social engineering
A technician is configuring a printer for a client. The technician connects the printer to the network, but is unsure how to determine its switchport. Which of the following should the technician do FIRST to locate the switchport?
A. Perform a DNS lookup on the server.
B. Set up an SSH session to the desktop.
C. Reference the ARP table in the router.
D. Configure port security on the switch.
A technician is setting up VoIP phones on a wireless network. Users report that calls are choppy and sometimes dropped. The technician has measured two characteristics using simple command-line tools that verify the problem. Which of the following characteristics did the technician measure? (Choose two.)
A. Refilection
B. Latency
C. Interference
D. Packet loss
E. Signal-to-noise ratio
F. Attenuation
A network administrator is going to be performing a major upgrade to the network. Which of the following should the administrator use in case of a failure?
A. Baseline report
B. Vulnerability report
C. Rollback plan
D. Business continuity plan
A network administrator gets a call regarding intermittent network outages across the country.
Which of the following should be used to connect to the network so the administrator can troubleshoot this issue from home? (Choose two.)
A. FTP
B. SMTP
C. VPN
D. SSH
E. SNMP
A technician is troubleshooting network connectivity issues with a remote host. Which of the following tools would BEST inform the technician of nodes between the client and the remote host? (Choose two.)
A. tracert
B. ping
C. tcpdump
D. pathping
E. netstat
F. nslookup
G. route
At which of the following OSI model layers would a router operate?
A. Physical
B. Network
C. Transport
D. Data link
Which of the following are characteristics of jumbo frames? (Choose two.)
A. Commonly used on SAN
B. MTU size greater than 1500
C. MTU size greater than 10000
D. Commonly used on IaaS
E. MTU size greater than 12000
An entire enterprise cannot access a specific website. The network technician knows the website was accessible last week. The technician can also ping the website. Which of the following is the technician MOST likely to find upon investigation?
A. The firewall is misconfigured.
B. The network is being hit by a zero-day attack.
C. The SSL certificate is untrusted.
D. The SSL certificate has expired.
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