GATE CSE 2019 | GATE CSE Year Wise Previous Years Questions

GATE CSE 2019

Numerical

-0

Consider that 15 machines need to be connected in a LAN using 8-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum number of switches needed is _____.

Your input ____

GATE CSE 2019

MCQ (Single Correct Answer)

-0.33

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?

IMAP, SMTP

SMTP, POP3

IMAP, POP3

SMTP, MIME

GATE CSE 2019

MCQ (Single Correct Answer)

-0.67

Consider three machines M, N, and P with IP addresses 100.10.5.2, 100.10.5.5, and 100.10.5.6 respectively. The subnet mask is set to 255.255 .255 .252 for all the three machines. Which one of the following is true?

$\mathrm{M}, \mathrm{N}$, and P all belong to the same subnet

Only M and N belong to the same subnet

Only N and P belong to the same subnet

M, N, and P belong to three different subnets

GATE CSE 2019

MCQ (Single Correct Answer)

-0.67

Suppose that in an IP-over-Ethernet network, a machine X wishes to find the MAC address of another machine Y in its subnet. Which one of the following techniques can be used for this?

X sends an ARP request packet to the local gateway's IP address which then finds the MAC address of Y and sends to X

X sends an ARP request packet to the local gateway's MAC address which then finds the MAC address of Y and sends to X

X sends an ARP request packet with broadcast MAC address in its local subnet

X sends an ARP request packet with broadcast IP address in its local subnet

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