Explain your work

In the figure below, W, X, Y, Z are LANs; B1, B2 are bridges; W1, Y1 are hosts (tables are empty). Yl sends packet I to WI and then W1 sends packet 2 to Y1. Which bridge interfaces see packet 2? Circle ONE: 1. all 2. all except (B1, X) 3. all except (B1, X)_and_(B1, Z) 4. only_(B2,Y)_and_ (B2,W) on all A link (B1, W) is added. During the spanning tree algorithm, B2 first sends the message ports; after it gets the message (B1,0,BI) on (B2, Z), B2 sends on (B2,Y). After link (B1, W) is added, indicate ONE interface that is NOT in the spanning tree. Circle ONE: 1. (B1, W) 2. (B1, X) 3. (B1, Z) 4. (B2, W) 5. (B2, Y) 6. (B2, Z) LANs Y and Z are on VLAN 100, and LANs Wand X are on VLAN 200. Y1 sends a packet to W1. Who attaches the VLAN ID, what is its value, and what happens to the packet? W WI B2 BI YI 1 Y Z In the figure below, W, X, Y, Z are LANs; B1, B2 are bridges; W1, Y1 are hosts (tables are empty). Yl sends packet I to WI and then W1 sends packet 2 to Y1. Which bridge interfaces see packet 2? Circle ONE: 1. all 2. all except (B1, X) 3. all except (B1, X)_and_(B1, Z) 4. only_(B2,Y)_and_ (B2,W) on all A link (B1, W) is added. During the spanning tree algorithm, B2 first sends the message ports; after it gets the message (B1,0,BI) on (B2, Z), B2 sends on (B2,Y). After link (B1, W) is added, indicate ONE interface that is NOT in the spanning tree. Circle ONE: 1. (B1, W) 2. (B1, X) 3. (B1, Z) 4. (B2, W) 5. (B2, Y) 6. (B2, Z) LANs Y and Z are on VLAN 100, and LANs Wand X are on VLAN 200. Y1 sends a packet to W1. Who attaches the VLAN ID, what is its value, and what happens to the packet? W WI B2 BI YI 1 Y Z