JK0-023 Online Practice Questions and Answers

Which of the following protocols is used by the ping command?

A. SMTP

B. ICMP

C. TFTP

D. ARP

Afer a new frewall is installedf users report that they do not have connectvity to the Internet. The output of the ipconfg command shows an IP address of 169.254.0.101. Which of the following ports would need to be opened on the frewall to allow the users to obtain an IP address? (Select TWO).

A. UDP 53

B. UDP 67

C. UDP 68

D. TCP 53

E. TCP 67

F. TCP 68

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

Lisaf a network technicianf is atemptng to map a FQDN to an internal server at the address of 10.0.0.15 without NAT/PAT. Which of the following is the reason this will ultmately not work?

A. This is a private address which cannot be seen by external users.

B. The address does not have the appropriate subnet mask assigned.

C. This is a public address which can only be seen by internal users.

D. This is a private address which can only be seen by external users.

A small company has a single mult-layer switch. The company currently has all network devices on the same subnet but would like to switch the servers to another subnet for security reasons. The company cannot budget any more money to purchase additonal hardware. Which of the following features should be used to achieve the new company requirements?

A. PAT

B. PoE

C. VLAN

D. QoS

Which of the following is similar to MIMO?

A.WPA

B. SSID

C. PoE

D. Diversity

A network administrator suspects that recent trafc problems could be caused by a high CPU load on company routers. Which of the following would BEST be used to monitor CPU cycles on the routers?

A. TACACS+

B. SNMP

C. Syslog

D. DOCSIS

A technician is unable to easily trace physical connectons within a network rack. Which of the following practces would save tme in the future?

A. Change management

B. Cable management

C. Asset management

D. Setng baselines

No link lights on a switchns SFP are functoningf so the network technician re-terminates the end. Afer testng the cablef the tester is showing a db loss of -9. Which of the following types of cable is MOST likely being tested?

A. Fiber

B. CAT3

C. CAT5e

D. CAT6a

Which of the following is used to create a secure connecton between a client and a host?

A. VLAN

B. Proxy server

C. IIS server

D. VPN