Practice Test Geeks(GATE) Graduate Aptitude Test in Engineering Practice Test
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Networks Flashcards

7 cards from real GATE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Networks flashcards as text

  1. The three-way handshake in TCP connection establishment uses which sequence of messages?

    Answer: SYN, SYN-ACK, ACK

    TCP's three-way handshake: client sends SYN, server responds with SYN-ACK, client replies with ACK to establish the connection.

  2. Which layer of the TCP/IP model corresponds to both the data link and physical layers of the OSI model?

    Answer: Network access layer

    The TCP/IP network access (link) layer combines the functions of OSI's data link and physical layers.

  3. In distance vector routing, the 'count to infinity' problem is caused by:

    Answer: Routers using stale routing information from neighbors that route back through them

    Count to infinity occurs when two routers each believe the other has a valid route to a failed destination, incrementally advertising increasing costs.

  4. A leaky bucket algorithm with a bucket size of 10 packets and output rate of 2 packets/second receives a burst of 10 packets instantly. How long until the bucket drains?

    Answer: 5 seconds

    At 2 packets/second, draining 10 packets takes 10/2 = 5 seconds.

  5. Which switching technique stores the entire frame before forwarding, allowing error checking before transmission?

    Answer: Store-and-forward switching

    Store-and-forward switching buffers the complete frame and performs CRC error checking before forwarding, at the cost of higher latency.

  6. BGP (Border Gateway Protocol) is classified as which type of routing protocol?

    Answer: Exterior Gateway Protocol using path vector

    BGP is an Exterior Gateway Protocol (EGP) that uses path-vector routing, advertising complete AS-path information to prevent routing loops between autonomous systems.

  7. In an Ethernet frame, the minimum frame size is 64 bytes. This minimum is enforced to:

    Answer: Ensure collision detection works correctly in CSMA/CD

    The 64-byte minimum ensures that a transmitting station is still sending when a collision signal propagates back across the maximum network diameter, enabling CSMA/CD detection.