Management is concerned there is excessive traffic on the network. A network technician wants to run a quick port scan to see any systems that have open ports. Which of the following tools should be used to do this?
A. tcpdumpWhich of the following occurs when antenna gain is increased on an access point?
A. Connection speeds decreaseAn administrator recently implemented new SOHO routers for a company's teleworking employees. Before deploying the routers, the administrator changed the default credentials and disabled unnecessary services. Within a few days of deployment, hackers gained access to the routers. Which of the following is the MOST important thing the administrator forgot to do?
A. Disable unused physical router ports.A few weeks after starting a new position, Joe, a junior network administrator, receives a call from an internal number asking for his username and password to update some records. Joe realizes this may be a type of attack on the network, since he has full access to network resources. Which of the following attacks is described?
A. Logic bombA network engineer is surveying the existing wireless infrastructure to propose additional changes to increase throughput The SSID is already on an uncongested 5GHz frequency. Which of the following should the engineer configure?
A. Channel bondingA network technician is reviewing the company phone system to make the necessary changes to a firewall configuration. Which of the following protocols are used in VoIP communication? (Choose two.)
A. SIPAn 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.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. RefilectionJeff, a customer, has a wireless network and has reported that the network traffic from the wireless access points seems high compared to the limited number of wireless devices used. Jeff believes that other non-employees are using the wireless network to access the Internet. Which of the following could be used to limit the access to the wireless network? (Select TWO).
A. WPA encryptionWhich of the following components acts as an intermediary device between the internal user's PC and external web servers to provide caching services that save on Internet bandwidth resources?
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