QUESTION: 77

A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available.
Which of the following would be MOST affected by this statistic?

A VoIP sales call with a customer
An in-office video call with a coworker
Routing table from the ISP
Firewall CPU processing time

Answer(s): A

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QUESTION: 78

A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter.
Which of the following ports should be blocked when checking firewall configuration?

22
23
80
3389
8080

Answer(s): B

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QUESTION: 79

A technician is writing documentation regarding a company's server farm. The technician needs to confirm the server name for all Linux servers.
Which of the following commands should the technician run?

ipconfig
nslookup
arp
route

Answer(s): B

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QUESTION: 80

A technician is connecting multiple switches to create a large network for a new office. The switches are unmanaged Layer 2 switches with multiple connections between each pair. The network is experiencing an extreme amount of latency.
Which of the following is MOST likely occurring?

Ethernet collisions
A DDoS attack
A broadcast storm
Routing loops

Answer(s): C

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QUESTION: 77

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QUESTION: 79

QUESTION: 80