单项选择题
A. It describes the reachability of routes in stub areas.
B. It describes the reachability of routes in totally-stubby areas.
C. It describes the reachability of routes in not-so-stubby areas.
D. It describes the reachability of routes in partially-stubby areas.
单项选择题 Given the following LSP configuration, which statement is true?（）label-switched-path lsp-xyz { to 10.200.1.1; primary path1; secondary path2; secondary path3; no-cspf; } path path1 { 10.200.10.1 strict; } path path2 { 10.200.20.1 strict; } path path3 { 10.200.30.1 loose; }
单项选择题 When importing or exporting routing information using routing policy, the import or export is always done from which point of view?（）
多项选择题 In which three ways are C-BGP and E-BGP sessions similar?（）