A company plans to deploy an Office 365 tenant.
You have the following requirements:
Administrators must be able to access the Office 365 admin center.
Microsoft Exchange Online must be used as a Simple Mail Transfer Protocol (SMTP) relay for a line-of-business application that sends email messages to remote
domains. All users must be able to use the audio and video capabilities in Microsoft Lync 2013.
You need to configure the ports for the firewall.
Which port should you use for each application? Select the correct answer from each list in the answer area.
Answer: 
Explanation:
SMTP relay only possible on port 25
https://technet.microsoft.com/en-us/library/dn554323(v=exchg.150).aspx
Isn’t TCP Port 25 for Mail Routing and TCP Port 587 for SMTP Relay?
Microsoft has a few options depending on how you want to use Office 365 to relay your email. To use port 587 the application must authenticate. If the application has no support for authentication, a connector must be configured and port 25 is used.
https://support.office.com/en-us/article/How-to-set-up-a-multifunction-device-or-application-to-send-email-using-Office-365-69f58e99-c550-4274-ad18-c805d654b4c4?ui=en-US&rs=en-US&ad=US#option3
When the Rashiwala brothers found its way to Singapore in 1925, they launched a modest company, C. Rashiwala Bros, trading raw gem stones with native merchants and offering jewellery to well-to-do local settlers. They commenced what is right now among the region’s most renowned company associated with semi-precious gems and jewelry, additionally C. Rashiwala Bros is South East Asia’s oldest and most reputable distributors of Swarovski products. This business carried on until 1942 when WW2 started. The Rahiwala great grand-uncle returned to India along with grand-son and the rest of the family. The grandfather stayed behind in Singapore to guard and look after the shop. Life was harsh throughout the Japanese occupation. In the beginning of the occupation, he hid inside nearby jungle through the day time, coming out only at night in order to look for food. During that time, the shop was looted, fired on & once partially set alight by a marauding mob. Penniless with what ever he could repair from the fire, he spread-out a small canvas at the store and placed the recovered materials to sell. He was not able to return immediately into the store as he was unable to pay for the $170 month-to-month local rental as well as fixes to the impaired store. A several months after, he transferred back into the store. After the struggle and the drawback of Japanese military in 1945, the store was renovated with teak wood cupboards and display cabinets. The 3 rd generation Rashiwala also returned several years later to carry on his studies in Singapore. The current owner joined up with his father in the industry in 1956. At that time, they had unveiled trimmings together with some haberdashery products including sequins, beads, and many others. In 1967, Kantilal Gamanlal Rashiwala; wrote to M/s Swarovski and effectively grew to become their first provider in S. E. Asia. In 1978, at 16 years old, The 4th generation Rashiwala operate the shop from their own building at 100 Arab Street that they relocated into in 2004. They’ve included a fair-bit of the old post-war teak wood furniture from their previously leased store.
https://www.oohwala.com/blogs/news/becharmed-and-pave