フリー問題

問題文

A multihomed customer site sees its own broadcast frames coming back, and the engineer looks at the community that enables the filter. Which statement about the type value that community carries, about the size of its encoded value, and about what its low order flag bit reports when raised is correct?

選択肢

1. In the base document the community that carries the segment label has a type of two, it is encoded as an eight octet value, and the low order bit of its flags reports the joint active mode when raised, as it states.
2. In the base document the community that carries the segment label has a type of two, it is encoded as a four octet value, and the low order bit of its flags reports the single active mode when raised, as it states.
3. In the base document the community that carries the segment label has a type of six, it is encoded as an eight octet value, and the low order bit of its flags reports the single active mode when raised, as it states.
4. In the base document the community that carries the segment label has a type of six, it is encoded as a four octet value, and the low order bit of its flags reports the joint active mode when raised, as it states.