Which of the following is an invalid IPv4 address?（）

单项选择题An administrator needs to update a router configuration for a router that does not support SSH.Which of the following can be used to securely update the router configuration?（）

A.FTP
B.SNMPv2
C.TFTP
D.KTTPS

单项选择题New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?（）

A. OTDR
B. Media converter
C. CSU/DSU
D. Fiber repeater

单项选择题Which of the following represents the physical address of a network access card?（）

A.FF01：D2：C4：87：：11
B.00-30-48-83-9B-C8
C.08-9D-35-22-L2-34-FF-21
D.2D1A：C3：0：1C3B：2AD：FF：FEBE：9D3A

单项选择题Office A is located 500 miles (805 kilometers) away from Office B, yet they are on the same private network. Which of the following is MOST likely being used to accomplish this scenario?（）

A. Trunking
B. LAN
C. VPN
D. Peer to peer

单项选择题customer wants to network several computers within a large warehouse. The warehouse has one computer at the very far end of the warehouse that is 170 meters (557 feet) from the network switch. Which of the following cable types should a technician use for this computer?（）

A.CAT3
B.CAT5
C.CAT6
D.Fiber