The final test

E1 What does TSG RAN specify?

• The applications running on a phone
• The radio side of a mobile network
• The billing system

E2 Which group owns 38.331, the document defining every message of the radio connection?

• RAN4
• RAN1
• RAN2

E3 What are the two kinds of NG-RAN node?

• A base station and a repeater
• A gNB and an ng-eNB
• A gNB and an AMF

E4 Which of these is NOT one of the four sublayers of layer 2 in NR?

• RLC
• RRC
• SDAP

E5 Somebody quotes a per-group document total as exact. What is the honest caveat?

• The totals are estimates with no source
• None; the catalogue is complete
• Three active rows carry no usable group, so the totals are very good rather than proven

E6 What is TSG RAN?

• The body that runs the mobile networks themselves
• A plenary and six working groups that specify the radio side of a mobile network
• A company that builds base stations

E7 Which group worries about the signal itself — what is sent over the air, and when?

• RAN1
• RAN3
• RAN5

E8 What are the two kinds of node an NG-RAN is built from?

• A mast and a router
• A gNB and an ng-eNB
• A gNB and a UPF

E9 Once a specification is published, how is it changed?

• By publishing a replacement document
• Only by change request
• By the group editing it whenever it likes

E10 How many active documents does RAN keep alive?

• 1059
• 198
• 3599