Deck 5: Intermediary Devices

Question 1

Which is INCORRECT about the router?

A) The router uses its routing table to find an optimal delivery path of a packet.
B) Each network segment separated by the router becomes a subnetwork.
C) The router is generally considered as a layer 4 device.
D) Many routers come with both LAN and WAN ports.
E) The router's LAN port should be equipped with both MAC and IP addresses for networking.

Answer 1

C

Question 2

Which is a layer one intermediary device?

A) bridge
B) switch
C) router
D) gateway
E) hub

Answer 2

E

Question 3

The table with columns of IP addresses and MAC addresses must be a(n):

A) routing table
B) switch table
C) address resolution protocol table
D) IP configuration table
E) DHCP table

Answer 3

C

Question 4

Collision domains are divided by a:

A) Switch
B) Repeater
C) Router
D) Access point
E) Hub

Question 5

Which is an ideal intermediary device to divide a network into smaller broadcast domains?

A) Switch
B) Bridge
C) Router
D) Access point
E) Hub

Question 6

The wireless access point must be a ________ device.

A) switch
B) bridge
C) router
D) repeater
E) hub

Question 7

'Address learning' and 'address aging' must take place in ______ .

A) switches
B) repeaters
C) hubs
D) routers
E) gateways

Question 8

If Ethernet and Wi-Fi LANs have to be interconnected, the _____ is a right choice as a data link layer device.

A) bridge
B) switch
C) router
D) gateway
E) hub

Question 9

When a switch has 10 ports, it should be equipped with at least _____ MAC addresses.

A) 1
B) 5
C) 10
D) 20
E) Cannot decide

Question 10

The switch table contains

A) MAC addresses and exit ports
B) IP addresses and exit ports
C) MAC and IP addresses, and exit ports
D) IP addresses only
E) MAC addresses only

Question 11

The router may NOT have a built-in _______.

A) CPU
B) random access memory
C) operating system
D) modem
E) LAN or WAN port

Question 12

Non-managed and managed switches differ in terms of their ability to

A) change between the switch mode and the router mode.
B) change switch configurations.
C) change between store-and-forward and cut-through switch mode.
D) change between the switch mode and the bridge mode.
E) change between the error detection mode and the non-detection mode.

Question 13

Choose an INCORRECT statement about the router.

A) It generally comes with both LAN and WAN ports.
B) Packet forwarding is a primary reason for its usage.
C) It has its own CPU and operating system.
D) It is either a 'managed' or 'non-managed' type.
E) It generally comes with security features such as access control list (ACL) designed to protect a network.

Question 14

Which is an adequate pairing of an intermediary device and its operational layer?

A) Switch - layer 3
B) Wireless access point - layer 2
C) Translational bridge - layer 3
D) Hub - layer 2
E) Router - layer 4

Question 15

Below table must be a(n) ___________ . $$\begin{array} { | c | c | c | } \hline \text { Internet address } & \text { Physical address } & \text { Interface(port) } \\\hline 172.16 .10 .1 & 00 - 23 - 4 \mathrm { C } - 6 \mathrm {~A} - 64 - 29 & \text { FastEtherneto/0 } \\\hline 172.16 .5 .1 & 00 - 23 - 4 \mathrm { C } - 6 \mathrm { D } - 7 \mathrm {~B} - \mathrm { EF } & \text { Fastherneto/1 } \\\hline 172.16 .7 .1 & 00 - 23 - 4 \mathrm { C } - 2 \mathrm { C } - 8 \mathrm {~A} - \mathrm { DE } & \text { FastEtherneto/2 } \\\hline\end{array}$$

A) bridge table
B) switch table
C) address resolution protocol table
D) repeater table
E) hub table

Question 16

The media access protocol, CSMA/CD, is activated by the host station when it is connected to a _____.

A) switch
B) hub
C) bridge
D) either a switch or a hub
E) router

Question 17

What protocol is being used by the source computer, 172.20.1.1, in sending out the request?

A) Domain name system protocol (DNS)
B) Address resolution protocol (ARP)
C) Internet control message protocol (ICMP)
D) Dynamic host configuration protocol (DHCP)
E) MAC resolution protocol (MRP)

Question 18

Imagine an Ethernet switch with 24 ports, each port with a speed of 100Mbps. What is the switch's forwarding rate?

A) 24 ports
B) 100 Mbps
C) 200 Mbps
D) 2400 Mbps
E) 4800 Mbps

Question 19

The switch table should contain _____ to forward frames.

A) exit ports and IP addresses
B) IP addresses and MAC addresses
C) MAC addresses and exit ports
D) exit ports and network IDs
E) MAC addresses and network IDs

Question 20

Choose a CORRECT statement regarding the bridge.

A) Bridges are physical layer devices.
B) Bridges have message filtering capability between network segments.
C) Transparent bridges interconnect network segments running on two different standard technologies.
D) The wireless access point (WAP) is a type of the transparent bridge device.
E) If a frame is broadcasted by a host station, the bridge filters the frame.

Question 21

Switches make switching decisions based on _______.

A) the destination's MAC address in a frame
B) the sender's IP address in a frame
C) the destination's socket in a frame
D) the sender's socket in a frame
E) the sender's MAC address in a frame

Question 22

Choose an INCORRECT statement regarding the LAN switch.

A) It has frame collisions oftentimes.
B) It can establish several concurrent connections between any two host stations.
C) Each switch port should be given a unique MAC address to function.
D) When a network runs on switches, the CSMA/CD protocol is disabled in the computer's NIC.
E) The switch is able to broadcast frames if necessary.

Question 23

Imagine a non-blocking Ethernet switch with 24 ports, each port with a speed of 100Mbps. What can be the switch's aggregate throughput?

A) 24 ports
B) 100 Mbps
C) 200 Mbps
D) 2400 Mbps
E) 4800 Mbps

Question 24

When switching and routing are compared:

A) Both are data link layer operations.
B) Networks relying on switching can be more vulnerable to a single point of failure than those relying on routing.
C) Both are internet layer operations.
D) Switching is a connection-less, but routing is connection-oriented in forwarding user data.
E) Both switching and routing presume availability of multiple active delivery paths between two hosts.

Question 25

Which is INCORRECT about routers?

A) The router uses its routing table to find an optimal delivery path of an IP packet.
B) Each network separated by the router becomes a broadcast domain.
C) The router generally forwards broadcasted IP packets.
D) Routers generally come with both LAN and WAN ports.
E) The router's LAN port should be given both MAC and IP addresses for networking.

Question 26

Which intermediary device does NOT need its own Operating System (OS)?

A) Hubs
B) Switches
C) Routers
D) Wireless access points
E) Bridges

Question 27

Below table shows status summary of a router's ports (or interfaces). How many WAN ports are available (both activated and non-activated) to the router for networking?

A) 0
B) 1
C) 2
D) 3
E) 5

Question 28

In the CSMA/CD protocol, when a station may transmit data?

A) Whenever it has something to send.
B) As soon as it finds that there is no other station transmitting.
C) As soon as a station is given an electronic token
D) As soon as it receives a "clear to send" signal.
E) As soon as it finishes the waiting of random amount of time calculated.

Question 29

As for switching and routing, choose a CORRECT statement.

A) The internet layer is responsible for packet switching.
B) A logical path between two host stations is pre-determined in switching, making it connection-oriented.
C) The data link layer is responsible for packet routing.
D) A logical path between two host stations is pre-determined in routing, making it connection-oriented.
E) Switching assumes the availability of multiple delivery paths.

Question 30

Below table shows status summary of an intermediary device.
-What type of network node should it be?

A) Router
B) Switch
C) Bridge
D) Server
E) Hub

Question 31

Below table shows status summary of an intermediary device.
-Which entry can be CORRECT?
Interface(port) Link Status IP address MAC address

A) A
B) B
C) C
D) D
E) E