[Free] 2018(Aug) Dumps4cert CompTIA JK0-023 Dumps with VCE and PDF Download 71-80

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CompTIA Network certification

Question No: 71 – (Topic 1)

Joe has a small office and is looking to replace his phone system with a lower cost solution that requires minimal in-house support. Which of the following is the BEST choice?

  1. Wide Area Network

  2. NAT

  3. Virtual PBX

  4. Virtual LAN

Answer: C

Question No: 72 – (Topic 1)

Creating a uniform user environment throughout the network can BEST be achieved by using which of the following?

  1. Honeypots

  2. Virtual switches

  3. Virtual PBX

  4. Virtual desktops

Answer: D

Question No: 73 – (Topic 1)

If a NIC does not have a link light, there is a failure at which of the following OSI layers?

  1. Physical

  2. Session

  3. Data link

  4. Presentation

Answer: A

Question No: 74 – (Topic 1)

Which of the following protocols is used to send time synchronization updates on a given network?

  1. NTP

  2. POP3

  3. DNS

  4. IMAP

Answer: A

Question No: 75 – (Topic 1)

Which of the following is the common port used for IMAP?

  1. 25

  2. 53 C. 143 D. 443

Answer: C

Question No: 76 – (Topic 1)

Which of the following ports should be allowed through a firewall to allow DNS resolution to occur to an outside DNS server?

  1. 20

  2. 53

  3. 80

D. 3389

Answer: B

Question No: 77 – (Topic 1)

Which of the following protocols is the BEST choice for retrieving email on multiple devices?

  1. IMAP4

  2. SMTP

  3. FTP

  4. SNMPv3

Answer: A

Question No: 78 – (Topic 1)

Which of the following is an example of a Class C address?





Answer: D

Question No: 79 – (Topic 1)

Which of the following is an invalid MAC address?

A. AA:CE:58:FD:90:08

B. 44:98:3E:F8:33:23

C. 56:AD:BX:89:55:54

D. 94:9E:FE:EE:8C:DF

Answer: C

Question No: 80 – (Topic 1)

Which of the following are considered unsecure access methods? (Select TWO).

  1. FTP

  2. IPSec

  3. RCP

  4. SCP

  5. SFTP

Answer: A,C

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