Module 4: Protocols

Which protocol's header would a layer 4 device read and process? a. IP b. TCP c. ARP (address resolution protocol) d. HTTP

b. TCP

What is the Internet standard MTU (maximum transmission unit)? a. 65,535 bytes b. 1,522 bytes c. 1,500 bytes d. 9,198 bytes

c. 1,500 bytes

Which encryption protocol does GRE (generic route encapsulation) use to increase the security of its transmission? a. SSL b. SFTP c. IPsec d. SSH

c. IPsec

At which OSI layer does IP operate? a. Application layer b. Transport layer c. Network layer d. Data link layer

c. Network layer

You're getting a duplicate IP address error on your computer and need to figure out what other device on your network is using the IP address 192.168.1.56. What command will show you which mac address is mapped to that IP address? a. telnet 192.168.1.56 b. tracert 192.168.1.56 c. arp -a d. netstat -n

c. arp -a

What field in a TCP segment is used to determine if an arriving data unit exactly matches the data unit sent by the source? a. Source port b. Acknowledgement number c. DiffServ d. Checksum

d. Checksum

Which two protocols manage neighbor discovery processes on IPv4 networks? a. ICMP (internet control message protocol) and ARP (address resolution protocol) b. IPv4 and IPv6 c. TCP and UDP d. NDP (neighbor discovery protocol) and Ethernet

a. ICMP and ARP

What is one advantage offered by VDI (virtual desktop infrastructure) over RDS (remote desktop services) and VNC (virtual network computing)? a. Offers access to multiple OSs in VMs b. Supports remote access to mobile devices c. Allows multiple users to sign in at once d. Provides open source flexibility

a. Offers access to multiple OSs in VMs

Which remote file access protocol is an extension of SSH? a. SFTP (SSH File Transfer Protocol) b. TFTP (Trivial File Transfer Protocol) c. FTPS (File Transfer Protocol Secure) d. HTTPS (Hypertext Transfer Protocol Secure)

a. SFTP

Which encryption benchmark ensures data is not modified after it's transmitted and before it's received? a. Confidentiality b. Integrity c. Availability d. Symmetric

b. Integrity