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2018 Aug CompTIA Official New Released JK0-023
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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?

A. 10.19.0.79

B. 127.34.8.197

C. 176.96.1.222

D. 192.168.1.105

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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