Channels interview questions

15 Channels questions from the Go bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. What is Unbuffered channel?

Junior
  1. A.an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  2. B.a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous
  3. C.the runtime failure that occurs when the close builtin is called twice on the same conduit
  4. D.a conduit with a fixed capacity on which sends only block once the internal queue is full

Answer + AI explanation with Pro

2. Which term means: "a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous"?

Junior
  1. A.Buffered channel
  2. B.Nil channel
  3. C.Close-of-closed panic
  4. D.Unbuffered channel

Answer + AI explanation with Pro

3. Which statement is correct?

Junior
  1. A.Unbuffered channel — the control statement that waits on multiple channel operations and proceeds with whichever is ready first
  2. B.Unbuffered channel — a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous
  3. C.Unbuffered channel — a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.Unbuffered channel — an uninitialized conduit on which both sends and receives block forever, useful to disable a select case

Answer + AI explanation with Pro

4. What is Buffered channel?

Mid
  1. A.a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous
  2. B.the runtime failure that occurs when the close builtin is called twice on the same conduit
  3. C.a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.the control statement that waits on multiple channel operations and proceeds with whichever is ready first

Answer + AI explanation with Pro

5. Which term means: "a conduit with a fixed capacity on which sends only block once the internal queue is full"?

Mid
  1. A.select
  2. B.Close-of-closed panic
  3. C.Buffered channel
  4. D.Unbuffered channel

Answer + AI explanation with Pro

6. Which statement is correct?

Mid
  1. A.Buffered channel — the control statement that waits on multiple channel operations and proceeds with whichever is ready first
  2. B.Buffered channel — the runtime failure that occurs when the close builtin is called twice on the same conduit
  3. C.Buffered channel — a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.Buffered channel — a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous

Answer + AI explanation with Pro

7. What is select?

Mid
  1. A.a conduit with a fixed capacity on which sends only block once the internal queue is full
  2. B.an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  3. C.the control statement that waits on multiple channel operations and proceeds with whichever is ready first
  4. D.the runtime failure that occurs when the close builtin is called twice on the same conduit

Answer + AI explanation with Pro

8. Which term means: "the control statement that waits on multiple channel operations and proceeds with whichever is ready first"?

Mid
  1. A.select
  2. B.Unbuffered channel
  3. C.Buffered channel
  4. D.Close-of-closed panic

Answer + AI explanation with Pro

9. Which statement is correct?

Mid
  1. A.select — the control statement that waits on multiple channel operations and proceeds with whichever is ready first
  2. B.select — an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  3. C.select — the runtime failure that occurs when the close builtin is called twice on the same conduit
  4. D.select — a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous

Answer + AI explanation with Pro

10. What is Close-of-closed panic?

Senior
  1. A.a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous
  2. B.the runtime failure that occurs when the close builtin is called twice on the same conduit
  3. C.a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.an uninitialized conduit on which both sends and receives block forever, useful to disable a select case

Answer + AI explanation with Pro

11. Which term means: "the runtime failure that occurs when the close builtin is called twice on the same conduit"?

Senior
  1. A.Close-of-closed panic
  2. B.Unbuffered channel
  3. C.Nil channel
  4. D.select

Answer + AI explanation with Pro

12. Which statement is correct?

Senior
  1. A.Close-of-closed panic — a conduit with a fixed capacity on which sends only block once the internal queue is full
  2. B.Close-of-closed panic — an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  3. C.Close-of-closed panic — the control statement that waits on multiple channel operations and proceeds with whichever is ready first
  4. D.Close-of-closed panic — the runtime failure that occurs when the close builtin is called twice on the same conduit

Answer + AI explanation with Pro

13. What is Nil channel?

Senior
  1. A.the runtime failure that occurs when the close builtin is called twice on the same conduit
  2. B.an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  3. C.a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.the control statement that waits on multiple channel operations and proceeds with whichever is ready first

Answer + AI explanation with Pro

14. Which term means: "an uninitialized conduit on which both sends and receives block forever, useful to disable a select case"?

Senior
  1. A.Buffered channel
  2. B.Unbuffered channel
  3. C.select
  4. D.Nil channel

Answer + AI explanation with Pro

15. Which statement is correct?

Senior
  1. A.Nil channel — the runtime failure that occurs when the close builtin is called twice on the same conduit
  2. B.Nil channel — an uninitialized conduit on which both sends and receives block forever, useful to disable a select case
  3. C.Nil channel — a conduit with a fixed capacity on which sends only block once the internal queue is full
  4. D.Nil channel — a conduit with zero capacity on which a send blocks until a receiver is ready, forming a rendezvous

Answer + AI explanation with Pro

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