Which of the following statements is/are FALSE?
Consider the following context-free grammar where the start symbol is S and the set of terminals is {a,b,c,d}.
$ S \rightarrow AaAb \mid BbBa $
$ A \rightarrow cS \mid \epsilon $
$ B \rightarrow dS \mid \epsilon $
The following is a partially-filled LL(1) parsing table.
| a | b | c | d | $ | |
|---|---|---|---|---|---|
| S | S $\rightarrow$ AaAb | S $\rightarrow$ BbBa | (1) | (2) | |
| A | A $\rightarrow \epsilon$ | (3) | A $\rightarrow$ cS | ||
| B | (4) | B $\rightarrow \epsilon$ | B $\rightarrow$ dS |
Which one of the following options represents the CORRECT combination for the numbered cells in the parsing table?
Note: In the options, “blank” denotes that the corresponding cell is empty.
Consider the following augmented grammar, which is to be parsed with a SLR parser. The set of terminals is $\{ a, b, c, d, \, \#, \, @ \}$
$S' \rightarrow S$
$S \rightarrow SS \;|\; Aa \;|\; bAc \;|\; Bc \;|\; bBa$
$A \rightarrow d\#\#$
$B \rightarrow @$
Let $I_0 = \text{CLOSURE}( \{ S' \rightarrow \bullet S \} )$. The number of items in the set $GOTO(I_0, \, S)$ is __________.
Node X has a TCP connection open to node Y. The packets from X to Y go through an intermediate IP router R. Ethernet switch S is the first switch on the network path between X and R. Consider a packet sent from X to Y over this connection.
Which of the following statements is/are TRUE about the destination IP and MAC addresses on this packet at the time it leaves X?