Consider the following function:

void incr(char** ptr)
{
  ++ptr;
}

and the following code excerpt (i.e a part of a code that is elsewhere correct),

  char msg[]  = "CS-202";
  char* tab[] = { msg + 1, msg + 3 };
  char* p     = msg + sizeof(msg) - 1;
  char** u = tab;
  char** v = &p;
  incr(u);
  // add one statement on u
  
  // add one statement on v
  
  for (char* r = *u; r < *v; ++r) putchar(*r);

What should be added (one instruction for u and one instruction for v) so that the above code prints "20"?

On a 64-bit architecture, with

const char* s1 = "12345";
char tab1[] = "43210";

and

void f(const char* s2, char tab2[]);

which of the following statements are true?

Statements involving s1 and tab1 are (of course) considered in the scope of s1 and tab1;

Penalty for wrong ticks.

An Internet router has the following entries in its forwarding table:

• IP prefix 5.0.0.0/8 --> output link 1.
• IP prefix 5.0.0.0/24 --> output link 2.

Is it possible that two packets with the same destination IP address are going to (are intended for) two different destination end-systems? If multiple answers make sense, choose the single best one.

To answer this question, do consider of Network Address Translation (NAT).

Based on what we said in class, which of the following sources of information does an Internet router use to determine where to send a packet next (which is the correct output link for the packet)?

When answering this question, don't worry about Network Address Translation -- pretend it doesn't exist.

(Many answers may be true.)

Based on what we said in class, which of the following statements about circuit-switched and packet-switched networks are true? 

(Many may be true.)

Based on what we said in class, which of the following statements about forwarding and routing are true? 

(Many may be true.)

Which of the following IP prefixes contain IP address 1.1.1.1? 

(Many answers may be true.)

What is "self clocking" in the context of TCP congestion control?

Which of the following statements related to flow control and congestion control are true?

(Many may be true.)